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import * as macro from 'vtk.js/Sources/macros';
import vtkHelper from 'vtk.js/Sources/Rendering/OpenGL/Helper';
import vtkMapper from 'vtk.js/Sources/Rendering/Core/Mapper';
import * as vtkMath from 'vtk.js/Sources/Common/Core/Math';
import vtkOpenGLTexture from 'vtk.js/Sources/Rendering/OpenGL/Texture';
import vtkProp from 'vtk.js/Sources/Rendering/Core/Prop';
import vtkProperty from 'vtk.js/Sources/Rendering/Core/Property';
import vtkShaderProgram from 'vtk.js/Sources/Rendering/OpenGL/ShaderProgram';
import vtkViewNode from 'vtk.js/Sources/Rendering/SceneGraph/ViewNode';
import vtkPolyDataVS from 'vtk.js/Sources/Rendering/OpenGL/glsl/vtkPolyDataVS.glsl';
import vtkPolyDataFS from 'vtk.js/Sources/Rendering/OpenGL/glsl/vtkPolyDataFS.glsl';
import vtkReplacementShaderMapper from 'vtk.js/Sources/Rendering/OpenGL/ReplacementShaderMapper';
import { registerOverride } from 'vtk.js/Sources/Rendering/OpenGL/ViewNodeFactory';
import { PassTypes } from 'vtk.js/Sources/Rendering/OpenGL/HardwareSelector/Constants';
import vtkDataSet from 'vtk.js/Sources/Common/DataModel/DataSet';
const { FieldAssociations } = vtkDataSet;
/* eslint-disable no-lonely-if */
const { primTypes } = vtkHelper;
const { Representation, Shading } = vtkProperty;
const { ScalarMode } = vtkMapper;
const { Filter, Wrap } = vtkOpenGLTexture;
const { vtkErrorMacro } = macro;
const StartEvent = { type: 'StartEvent' };
const EndEvent = { type: 'EndEvent' };
const { CoordinateSystem } = vtkProp;
// ----------------------------------------------------------------------------
// vtkOpenGLPolyDataMapper methods
// ----------------------------------------------------------------------------
function getPickState(renderer) {
const selector = renderer.getSelector();
if (selector) {
return selector.getCurrentPass();
}
return PassTypes.MIN_KNOWN_PASS - 1;
}
function vtkOpenGLPolyDataMapper(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkOpenGLPolyDataMapper');
publicAPI.buildPass = (prepass) => {
if (prepass) {
model.currentRenderPass = null;
model.openGLActor = publicAPI.getFirstAncestorOfType('vtkOpenGLActor');
model._openGLRenderer =
model.openGLActor.getFirstAncestorOfType('vtkOpenGLRenderer');
model._openGLRenderWindow = model._openGLRenderer.getParent();
model.openGLCamera = model._openGLRenderer.getViewNodeFor(
model._openGLRenderer.getRenderable().getActiveCamera()
);
}
};
// Renders myself
publicAPI.translucentPass = (prepass, renderPass) => {
if (prepass) {
model.currentRenderPass = renderPass;
publicAPI.render();
}
};
publicAPI.zBufferPass = (prepass) => {
if (prepass) {
model.haveSeenDepthRequest = true;
model.renderDepth = true;
publicAPI.render();
model.renderDepth = false;
}
};
publicAPI.opaqueZBufferPass = (prepass) => publicAPI.zBufferPass(prepass);
publicAPI.opaquePass = (prepass) => {
if (prepass) {
publicAPI.render();
}
};
publicAPI.render = () => {
const ctx = model._openGLRenderWindow.getContext();
if (model.context !== ctx) {
model.context = ctx;
for (let i = primTypes.Start; i < primTypes.End; i++) {
model.primitives[i].setOpenGLRenderWindow(model._openGLRenderWindow);
}
}
const actor = model.openGLActor.getRenderable();
const ren = model._openGLRenderer.getRenderable();
publicAPI.renderPiece(ren, actor);
};
publicAPI.getShaderTemplate = (shaders, ren, actor) => {
shaders.Vertex = vtkPolyDataVS;
shaders.Fragment = vtkPolyDataFS;
shaders.Geometry = '';
};
publicAPI.replaceShaderColor = (shaders, ren, actor) => {
let VSSource = shaders.Vertex;
let GSSource = shaders.Geometry;
let FSSource = shaders.Fragment;
const lastLightComplexity = model.lastBoundBO.getReferenceByName(
'lastLightComplexity'
);
// create the material/color property declarations, and VS implementation
// these are always defined
let colorDec = [
'uniform float ambient;',
'uniform float diffuse;',
'uniform float specular;',
'uniform float opacityUniform; // the fragment opacity',
'uniform vec3 ambientColorUniform;',
'uniform vec3 diffuseColorUniform;',
];
// add more for specular
if (lastLightComplexity) {
colorDec = colorDec.concat([
'uniform vec3 specularColorUniform;',
'uniform float specularPowerUniform;',
]);
}
// now handle the more complex fragment shader implementation
// the following are always defined variables. We start
// by assigning a default value from the uniform
let colorImpl = [
'vec3 ambientColor;',
' vec3 diffuseColor;',
' float opacity;',
];
if (lastLightComplexity) {
colorImpl = colorImpl.concat([
' vec3 specularColor;',
' float specularPower;',
]);
}
colorImpl = colorImpl.concat([
' ambientColor = ambientColorUniform;',
' diffuseColor = diffuseColorUniform;',
' opacity = opacityUniform;',
]);
if (lastLightComplexity) {
colorImpl = colorImpl.concat([
' specularColor = specularColorUniform;',
' specularPower = specularPowerUniform;',
]);
}
// add scalar vertex coloring
if (
model.lastBoundBO.getCABO().getColorComponents() !== 0 &&
!model.drawingEdges
) {
colorDec = colorDec.concat(['varying vec4 vertexColorVSOutput;']);
VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::Color::Dec', [
'attribute vec4 scalarColor;',
'varying vec4 vertexColorVSOutput;',
]).result;
VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::Color::Impl', [
'vertexColorVSOutput = scalarColor;',
]).result;
GSSource = vtkShaderProgram.substitute(GSSource, '//VTK::Color::Dec', [
'in vec4 vertexColorVSOutput[];',
'out vec4 vertexColorGSOutput;',
]).result;
GSSource = vtkShaderProgram.substitute(GSSource, '//VTK::Color::Impl', [
'vertexColorGSOutput = vertexColorVSOutput[i];',
]).result;
}
if (
model.lastBoundBO.getCABO().getColorComponents() !== 0 &&
!model.drawingEdges
) {
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Color::Impl',
colorImpl.concat([
' diffuseColor = vertexColorVSOutput.rgb;',
' ambientColor = vertexColorVSOutput.rgb;',
' opacity = opacity*vertexColorVSOutput.a;',
])
).result;
} else {
if (
model.renderable.getInterpolateScalarsBeforeMapping() &&
model.renderable.getColorCoordinates() &&
!model.drawingEdges
) {
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Color::Impl',
colorImpl.concat([
' vec4 texColor = texture2D(texture1, tcoordVCVSOutput.st);',
' diffuseColor = texColor.rgb;',
' ambientColor = texColor.rgb;',
' opacity = opacity*texColor.a;',
])
).result;
} else {
Iif (actor.getBackfaceProperty() && !model.drawingEdges) {
colorDec = colorDec.concat([
'uniform float opacityUniformBF; // the fragment opacity',
'uniform float ambientIntensityBF; // the material ambient',
'uniform float diffuseIntensityBF; // the material diffuse',
'uniform vec3 ambientColorUniformBF; // ambient material color',
'uniform vec3 diffuseColorUniformBF; // diffuse material color',
]);
if (lastLightComplexity) {
colorDec = colorDec.concat([
'uniform float specularIntensityBF; // the material specular intensity',
'uniform vec3 specularColorUniformBF; // intensity weighted color',
'uniform float specularPowerUniformBF;',
]);
colorImpl = colorImpl.concat([
'if (gl_FrontFacing == false) {',
' ambientColor = ambientIntensityBF * ambientColorUniformBF;',
' diffuseColor = diffuseIntensityBF * diffuseColorUniformBF;',
' specularColor = specularIntensityBF * specularColorUniformBF;',
' specularPower = specularPowerUniformBF;',
' opacity = opacityUniformBF; }',
]);
} else {
colorImpl = colorImpl.concat([
'if (gl_FrontFacing == false) {',
' ambientColor = ambientIntensityBF * ambientColorUniformBF;',
' diffuseColor = diffuseIntensityBF * diffuseColorUniformBF;',
' opacity = opacityUniformBF; }',
]);
}
}
Iif (model.haveCellScalars && !model.drawingEdges) {
colorDec = colorDec.concat(['uniform samplerBuffer texture1;']);
}
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Color::Impl',
colorImpl
).result;
}
}
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Color::Dec',
colorDec
).result;
shaders.Vertex = VSSource;
shaders.Geometry = GSSource;
shaders.Fragment = FSSource;
};
publicAPI.replaceShaderLight = (shaders, ren, actor) => {
let FSSource = shaders.Fragment;
// check for shadow maps
const shadowFactor = '';
const lastLightComplexity = model.lastBoundBO.getReferenceByName(
'lastLightComplexity'
);
const lastLightCount =
model.lastBoundBO.getReferenceByName('lastLightCount');
let sstring = [];
switch (lastLightComplexity) {
case 0: // no lighting or RENDER_VALUES
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Light::Impl',
[
' gl_FragData[0] = vec4(ambientColor * ambient + diffuseColor * diffuse, opacity);',
' //VTK::Light::Impl',
],
false
).result;
break;
case 1: // headlight
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Light::Impl',
[
' float df = max(0.0, normalVCVSOutput.z);',
' float sf = pow(df, specularPower);',
' vec3 diffuseL = df * diffuseColor;',
' vec3 specularL = sf * specularColor;',
' gl_FragData[0] = vec4(ambientColor * ambient + diffuseL * diffuse + specularL * specular, opacity);',
' //VTK::Light::Impl',
],
false
).result;
break;
case 2: // light kit
for (let lc = 0; lc < lastLightCount; ++lc) {
sstring = sstring.concat([
`uniform vec3 lightColor${lc};`,
`uniform vec3 lightDirectionVC${lc}; // normalized`,
`uniform vec3 lightHalfAngleVC${lc}; // normalized`,
]);
}
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Light::Dec',
sstring
).result;
sstring = [
'vec3 diffuseL = vec3(0,0,0);',
' vec3 specularL = vec3(0,0,0);',
' float df;',
];
for (let lc = 0; lc < lastLightCount; ++lc) {
sstring = sstring.concat([
` df = max(0.0, dot(normalVCVSOutput, -lightDirectionVC${lc}));`,
` diffuseL += ((df${shadowFactor}) * lightColor${lc});`,
` if (dot(normalVCVSOutput, lightDirectionVC${lc}) < 0.0)`,
' {',
` float sf = sign(df)*pow(max(1e-5,
dot(reflect(lightDirectionVC${lc},normalVCVSOutput),
normalize(-vertexVC.xyz))),
specularPower);`,
` specularL += (sf${shadowFactor} * lightColor${lc});`,
' }',
]);
}
sstring = sstring.concat([
' diffuseL = diffuseL * diffuseColor;',
' specularL = specularL * specularColor;',
' gl_FragData[0] = vec4(ambientColor * ambient + diffuseL * diffuse + specularL * specular, opacity);',
' //VTK::Light::Impl',
]);
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Light::Impl',
sstring,
false
).result;
break;
case 3: // positional
for (let lc = 0; lc < lastLightCount; ++lc) {
sstring = sstring.concat([
`uniform vec3 lightColor${lc};`,
`uniform vec3 lightDirectionVC${lc}; // normalized`,
`uniform vec3 lightHalfAngleVC${lc}; // normalized`,
`uniform vec3 lightPositionVC${lc};`,
`uniform vec3 lightAttenuation${lc};`,
`uniform float lightConeAngle${lc};`,
`uniform float lightExponent${lc};`,
`uniform int lightPositional${lc};`,
]);
}
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Light::Dec',
sstring
).result;
sstring = [
'vec3 diffuseL = vec3(0,0,0);',
' vec3 specularL = vec3(0,0,0);',
' vec3 vertLightDirectionVC;',
' float attenuation;',
' float df;',
];
for (let lc = 0; lc < lastLightCount; ++lc) {
sstring = sstring.concat([
' attenuation = 1.0;',
` if (lightPositional${lc} == 0)`,
' {',
` vertLightDirectionVC = lightDirectionVC${lc};`,
' }',
' else',
' {',
` vertLightDirectionVC = vertexVC.xyz - lightPositionVC${lc};`,
' float distanceVC = length(vertLightDirectionVC);',
' vertLightDirectionVC = normalize(vertLightDirectionVC);',
' attenuation = 1.0 /',
` (lightAttenuation${lc}.x`,
` + lightAttenuation${lc}.y * distanceVC`,
` + lightAttenuation${lc}.z * distanceVC * distanceVC);`,
' // per OpenGL standard cone angle is 90 or less for a spot light',
` if (lightConeAngle${lc} <= 90.0)`,
' {',
` float coneDot = dot(vertLightDirectionVC, lightDirectionVC${lc});`,
' // if inside the cone',
` if (coneDot >= cos(radians(lightConeAngle${lc})))`,
' {',
` attenuation = attenuation * pow(coneDot, lightExponent${lc});`,
' }',
' else',
' {',
' attenuation = 0.0;',
' }',
' }',
' }',
' df = max(0.0, attenuation*dot(normalVCVSOutput, -vertLightDirectionVC));',
` diffuseL += ((df${shadowFactor}) * lightColor${lc});`,
' if (dot(normalVCVSOutput, vertLightDirectionVC) < 0.0)',
' {',
` float sf = sign(df)*attenuation*pow(max(1e-5,
dot(reflect(lightDirectionVC${lc},
normalVCVSOutput),
normalize(-vertexVC.xyz))),
specularPower);`,
` specularL += ((sf${shadowFactor}) * lightColor${lc});`,
' }',
]);
}
sstring = sstring.concat([
' diffuseL = diffuseL * diffuseColor;',
' specularL = specularL * specularColor;',
' gl_FragData[0] = vec4(ambientColor * ambient + diffuseL * diffuse + specularL * specular, opacity);',
' //VTK::Light::Impl',
]);
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Light::Impl',
sstring,
false
).result;
break;
default:
vtkErrorMacro('bad light complexity');
}
shaders.Fragment = FSSource;
};
publicAPI.replaceShaderNormal = (shaders, ren, actor) => {
const lastLightComplexity = model.lastBoundBO.getReferenceByName(
'lastLightComplexity'
);
if (lastLightComplexity > 0) {
let VSSource = shaders.Vertex;
let GSSource = shaders.Geometry;
let FSSource = shaders.Fragment;
if (model.lastBoundBO.getCABO().getNormalOffset()) {
VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::Normal::Dec', [
'attribute vec3 normalMC;',
'uniform mat3 normalMatrix;',
'varying vec3 normalVCVSOutput;',
]).result;
VSSource = vtkShaderProgram.substitute(
VSSource,
'//VTK::Normal::Impl',
['normalVCVSOutput = normalMatrix * normalMC;']
).result;
GSSource = vtkShaderProgram.substitute(GSSource, '//VTK::Normal::Dec', [
'in vec3 normalVCVSOutput[];',
'out vec3 normalVCGSOutput;',
]).result;
GSSource = vtkShaderProgram.substitute(
GSSource,
'//VTK::Normal::Impl',
['normalVCGSOutput = normalVCVSOutput[i];']
).result;
FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::Normal::Dec', [
'varying vec3 normalVCVSOutput;',
]).result;
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Normal::Impl',
[
'vec3 normalVCVSOutput = normalize(normalVCVSOutput);',
// if (!gl_FrontFacing) does not work in intel hd4000 mac
// if (int(gl_FrontFacing) == 0) does not work on mesa
' if (gl_FrontFacing == false) { normalVCVSOutput = -normalVCVSOutput; }',
]
).result;
} else {
Iif (model.haveCellNormals) {
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Normal::Dec',
['uniform mat3 normalMatrix;', 'uniform samplerBuffer textureN;']
).result;
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Normal::Impl',
[
'vec3 normalVCVSOutput = normalize(normalMatrix *',
' texelFetchBuffer(textureN, gl_PrimitiveID + PrimitiveIDOffset).xyz);',
' if (gl_FrontFacing == false) { normalVCVSOutput = -normalVCVSOutput; }',
]
).result;
} else {
if (
model.lastBoundBO.getOpenGLMode(
actor.getProperty().getRepresentation()
) === model.context.LINES
) {
// generate a normal for lines, it will be perpendicular to the line
// and maximally aligned with the camera view direction
// no clue if this is the best way to do this.
// the code below has been optimized a bit so what follows is
// an explanation of the basic approach. Compute the gradient of the line
// with respect to x and y, the the larger of the two
// cross that with the camera view direction. That gives a vector
// orthogonal to the camera view and the line. Note that the line and the camera
// view are probably not orthogonal. Which is why when we cross result that with
// the line gradient again we get a reasonable normal. It will be othogonal to
// the line (which is a plane but maximally aligned with the camera view.
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::UniformFlow::Impl',
[
' vec3 fdx = dFdx(vertexVC.xyz);',
' vec3 fdy = dFdy(vertexVC.xyz);',
' //VTK::UniformFlow::Impl',
] // For further replacements
).result;
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Normal::Impl',
[
'vec3 normalVCVSOutput;',
' if (abs(fdx.x) > 0.0)',
' { fdx = normalize(fdx); normalVCVSOutput = normalize(cross(vec3(fdx.y, -fdx.x, 0.0), fdx)); }',
' else { fdy = normalize(fdy); normalVCVSOutput = normalize(cross(vec3(fdy.y, -fdy.x, 0.0), fdy));}',
]
).result;
} else {
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Normal::Dec',
['uniform int cameraParallel;']
).result;
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::UniformFlow::Impl',
[
// ' vec3 fdx = vec3(dFdx(vertexVC.x),dFdx(vertexVC.y),dFdx(vertexVC.z));',
// ' vec3 fdy = vec3(dFdy(vertexVC.x),dFdy(vertexVC.y),dFdy(vertexVC.z));',
' vec3 fdx = dFdx(vertexVC.xyz);',
' vec3 fdy = dFdy(vertexVC.xyz);',
' //VTK::UniformFlow::Impl',
] // For further replacements
).result;
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Normal::Impl',
[
' fdx = normalize(fdx);',
' fdy = normalize(fdy);',
' vec3 normalVCVSOutput = normalize(cross(fdx,fdy));',
// the code below is faster, but does not work on some devices
// 'vec3 normalVC = normalize(cross(dFdx(vertexVC.xyz), dFdy(vertexVC.xyz)));',
' if (cameraParallel == 1 && normalVCVSOutput.z < 0.0) { normalVCVSOutput = -1.0*normalVCVSOutput; }',
' if (cameraParallel == 0 && dot(normalVCVSOutput,vertexVC.xyz) > 0.0) { normalVCVSOutput = -1.0*normalVCVSOutput; }',
]
).result;
}
}
}
shaders.Vertex = VSSource;
shaders.Geometry = GSSource;
shaders.Fragment = FSSource;
}
};
publicAPI.replaceShaderPositionVC = (shaders, ren, actor) => {
// replace common shader code
model.lastBoundBO.replaceShaderPositionVC(shaders, ren, actor);
let VSSource = shaders.Vertex;
let GSSource = shaders.Geometry;
let FSSource = shaders.Fragment;
// do we need the vertex in the shader in View Coordinates
const lastLightComplexity = model.lastBoundBO.getReferenceByName(
'lastLightComplexity'
);
if (lastLightComplexity > 0) {
VSSource = vtkShaderProgram.substitute(
VSSource,
'//VTK::PositionVC::Dec',
['varying vec4 vertexVCVSOutput;']
).result;
VSSource = vtkShaderProgram.substitute(
VSSource,
'//VTK::PositionVC::Impl',
[
'vertexVCVSOutput = MCVCMatrix * vertexMC;',
' gl_Position = MCPCMatrix * vertexMC;',
]
).result;
VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::Camera::Dec', [
'uniform mat4 MCPCMatrix;',
'uniform mat4 MCVCMatrix;',
]).result;
GSSource = vtkShaderProgram.substitute(
GSSource,
'//VTK::PositionVC::Dec',
['in vec4 vertexVCVSOutput[];', 'out vec4 vertexVCGSOutput;']
).result;
GSSource = vtkShaderProgram.substitute(
GSSource,
'//VTK::PositionVC::Impl',
['vertexVCGSOutput = vertexVCVSOutput[i];']
).result;
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::PositionVC::Dec',
['varying vec4 vertexVCVSOutput;']
).result;
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::PositionVC::Impl',
['vec4 vertexVC = vertexVCVSOutput;']
).result;
} else {
VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::Camera::Dec', [
'uniform mat4 MCPCMatrix;',
]).result;
VSSource = vtkShaderProgram.substitute(
VSSource,
'//VTK::PositionVC::Impl',
[' gl_Position = MCPCMatrix * vertexMC;']
).result;
}
shaders.Vertex = VSSource;
shaders.Geometry = GSSource;
shaders.Fragment = FSSource;
};
publicAPI.replaceShaderTCoord = (shaders, ren, actor) => {
if (model.lastBoundBO.getCABO().getTCoordOffset()) {
let VSSource = shaders.Vertex;
let GSSource = shaders.Geometry;
let FSSource = shaders.Fragment;
Iif (model.drawingEdges) {
return;
}
VSSource = vtkShaderProgram.substitute(
VSSource,
'//VTK::TCoord::Impl',
'tcoordVCVSOutput = tcoordMC;'
).result;
// we only handle the first texture by default
// additional textures are activated and we set the uniform
// for the texture unit they are assigned to, but you have to
// add in the shader code to do something with them
const tus = model.openGLActor.getActiveTextures();
let tNumComp = 2;
let tcdim = 2;
if (tus && tus.length > 0) {
tNumComp = tus[0].getComponents();
if (tus[0].getTarget() === model.context.TEXTURE_CUBE_MAP) {
tcdim = 3;
}
}
if (model.renderable.getColorTextureMap()) {
tNumComp = model.renderable
.getColorTextureMap()
.getPointData()
.getScalars()
.getNumberOfComponents();
tcdim = 2;
}
if (tcdim === 2) {
VSSource = vtkShaderProgram.substitute(
VSSource,
'//VTK::TCoord::Dec',
'attribute vec2 tcoordMC; varying vec2 tcoordVCVSOutput;'
).result;
GSSource = vtkShaderProgram.substitute(GSSource, '//VTK::TCoord::Dec', [
'in vec2 tcoordVCVSOutput[];',
'out vec2 tcoordVCGSOutput;',
]).result;
GSSource = vtkShaderProgram.substitute(
GSSource,
'//VTK::TCoord::Impl',
'tcoordVCGSOutput = tcoordVCVSOutput[i];'
).result;
FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::TCoord::Dec', [
'varying vec2 tcoordVCVSOutput;',
'uniform sampler2D texture1;',
]).result;
if (tus && tus.length >= 1) {
switch (tNumComp) {
case 1:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::TCoord::Impl',
[
' vec4 tcolor = texture2D(texture1, tcoordVCVSOutput);',
' ambientColor = ambientColor*tcolor.r;',
' diffuseColor = diffuseColor*tcolor.r;',
]
).result;
break;
case 2:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::TCoord::Impl',
[
' vec4 tcolor = texture2D(texture1, tcoordVCVSOutput);',
' ambientColor = ambientColor*tcolor.r;',
' diffuseColor = diffuseColor*tcolor.r;',
' opacity = opacity * tcolor.g;',
]
).result;
break;
default:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::TCoord::Impl',
[
' vec4 tcolor = texture2D(texture1, tcoordVCVSOutput);',
' ambientColor = ambientColor*tcolor.rgb;',
' diffuseColor = diffuseColor*tcolor.rgb;',
' opacity = opacity * tcolor.a;',
]
).result;
}
}
} else {
VSSource = vtkShaderProgram.substitute(
VSSource,
'//VTK::TCoord::Dec',
'attribute vec3 tcoordMC; varying vec3 tcoordVCVSOutput;'
).result;
GSSource = vtkShaderProgram.substitute(GSSource, '//VTK::TCoord::Dec', [
'in vec3 tcoordVCVSOutput[];',
'out vec3 tcoordVCGSOutput;',
]).result;
GSSource = vtkShaderProgram.substitute(
GSSource,
'//VTK::TCoord::Impl',
'tcoordVCGSOutput = tcoordVCVSOutput[i];'
).result;
FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::TCoord::Dec', [
'varying vec3 tcoordVCVSOutput;',
'uniform samplerCube texture1;',
]).result;
switch (tNumComp) {
case 1:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::TCoord::Impl',
[
' vec4 tcolor = textureCube(texture1, tcoordVCVSOutput);',
' ambientColor = ambientColor*tcolor.r;',
' diffuseColor = diffuseColor*tcolor.r;',
]
).result;
break;
case 2:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::TCoord::Impl',
[
' vec4 tcolor = textureCube(texture1, tcoordVCVSOutput);',
' ambientColor = ambientColor*tcolor.r;',
' diffuseColor = diffuseColor*tcolor.r;',
' opacity = opacity * tcolor.g;',
]
).result;
break;
default:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::TCoord::Impl',
[
' vec4 tcolor = textureCube(texture1, tcoordVCVSOutput);',
' ambientColor = ambientColor*tcolor.rgb;',
' diffuseColor = diffuseColor*tcolor.rgb;',
' opacity = opacity * tcolor.a;',
]
).result;
}
}
shaders.Vertex = VSSource;
shaders.Geometry = GSSource;
shaders.Fragment = FSSource;
}
};
publicAPI.replaceShaderClip = (shaders, ren, actor) => {
let VSSource = shaders.Vertex;
let FSSource = shaders.Fragment;
if (model.renderable.getNumberOfClippingPlanes()) {
const numClipPlanes = model.renderable.getNumberOfClippingPlanes();
VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::Clip::Dec', [
'uniform int numClipPlanes;',
`uniform vec4 clipPlanes[${numClipPlanes}];`,
`varying float clipDistancesVSOutput[${numClipPlanes}];`,
]).result;
VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::Clip::Impl', [
`for (int planeNum = 0; planeNum < ${numClipPlanes}; planeNum++)`,
' {',
' if (planeNum >= numClipPlanes)',
' {',
' break;',
' }',
' clipDistancesVSOutput[planeNum] = dot(clipPlanes[planeNum], vertexMC);',
' }',
]).result;
FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::Clip::Dec', [
'uniform int numClipPlanes;',
`varying float clipDistancesVSOutput[${numClipPlanes}];`,
]).result;
FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::Clip::Impl', [
`for (int planeNum = 0; planeNum < ${numClipPlanes}; planeNum++)`,
' {',
' if (planeNum >= numClipPlanes)',
' {',
' break;',
' }',
' if (clipDistancesVSOutput[planeNum] < 0.0) discard;',
' }',
]).result;
}
shaders.Vertex = VSSource;
shaders.Fragment = FSSource;
};
publicAPI.getCoincidentParameters = (ren, actor) => {
// 1. ResolveCoincidentTopology is On and non zero for this primitive
// type
let cp = {
factor: 0.0,
offset: 0.0,
};
const prop = actor.getProperty();
if (
model.renderable.getResolveCoincidentTopology() ||
(prop.getEdgeVisibility() &&
prop.getRepresentation() === Representation.SURFACE)
) {
const primType = model.lastBoundBO.getPrimitiveType();
if (
primType === primTypes.Points ||
prop.getRepresentation() === Representation.POINTS
) {
cp = model.renderable.getCoincidentTopologyPointOffsetParameter();
} else if (
primType === primTypes.Lines ||
prop.getRepresentation() === Representation.WIREFRAME
) {
cp = model.renderable.getCoincidentTopologyLineOffsetParameters();
} else if (
primType === primTypes.Tris ||
primType === primTypes.TriStrips
) {
cp = model.renderable.getCoincidentTopologyPolygonOffsetParameters();
}
if (
primType === primTypes.TrisEdges ||
primType === primTypes.TriStripsEdges
) {
cp = model.renderable.getCoincidentTopologyPolygonOffsetParameters();
cp.factor /= 2.0;
cp.offset /= 2.0;
}
}
// hardware picking always offset due to saved zbuffer
// This gets you above the saved surface depth buffer.
const selector = model._openGLRenderer.getSelector();
if (
selector &&
selector.getFieldAssociation() ===
FieldAssociations.FIELD_ASSOCIATION_POINTS
) {
cp.offset -= 2.0;
}
return cp;
};
publicAPI.replaceShaderPicking = (shaders, ren, actor) => {
let FSSource = shaders.Fragment;
let VSSource = shaders.Vertex;
FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::Picking::Dec', [
'uniform int picking;',
'//VTK::Picking::Dec',
]).result;
if (!model._openGLRenderer.getSelector()) {
return;
}
if (
model.lastSelectionState === PassTypes.ID_LOW24 ||
model.lastSelectionState === PassTypes.ID_HIGH24
) {
VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::Picking::Dec', [
'flat out int vertexIDVSOutput;\n',
'uniform int VertexIDOffset;\n',
]).result;
VSSource = vtkShaderProgram.substitute(
VSSource,
'//VTK::Picking::Impl',
' vertexIDVSOutput = gl_VertexID + VertexIDOffset;\n'
).result;
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Picking::Dec',
'flat in int vertexIDVSOutput;\n'
).result;
FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::Picking::Impl', [
' int idx = vertexIDVSOutput;',
'//VTK::Picking::Impl',
]).result;
}
switch (model.lastSelectionState) {
case PassTypes.ID_LOW24:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Picking::Impl',
' gl_FragData[0] = vec4(float(idx%256)/255.0, float((idx/256)%256)/255.0, float((idx/65536)%256)/255.0, 1.0);'
).result;
break;
case PassTypes.ID_HIGH24:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Picking::Impl',
' gl_FragData[0] = vec4(float(idx)/255.0, 0.0, 0.0, 1.0);'
).result;
break;
default:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Picking::Dec',
'uniform vec3 mapperIndex;'
).result;
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::Picking::Impl',
' gl_FragData[0] = picking != 0 ? vec4(mapperIndex,1.0) : gl_FragData[0];'
).result;
}
shaders.Fragment = FSSource;
shaders.Vertex = VSSource;
};
publicAPI.replaceShaderValues = (shaders, ren, actor) => {
publicAPI.replaceShaderColor(shaders, ren, actor);
publicAPI.replaceShaderNormal(shaders, ren, actor);
publicAPI.replaceShaderLight(shaders, ren, actor);
publicAPI.replaceShaderTCoord(shaders, ren, actor);
publicAPI.replaceShaderPicking(shaders, ren, actor);
publicAPI.replaceShaderClip(shaders, ren, actor);
publicAPI.replaceShaderCoincidentOffset(shaders, ren, actor);
publicAPI.replaceShaderPositionVC(shaders, ren, actor);
if (model.haveSeenDepthRequest) {
let FSSource = shaders.Fragment;
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::ZBuffer::Dec',
'uniform int depthRequest;'
).result;
FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::ZBuffer::Impl', [
'if (depthRequest == 1) {',
'float iz = floor(gl_FragCoord.z*65535.0 + 0.1);',
'float rf = floor(iz/256.0)/255.0;',
'float gf = mod(iz,256.0)/255.0;',
'gl_FragData[0] = vec4(rf, gf, 0.0, 1.0); }',
]).result;
shaders.Fragment = FSSource;
}
};
publicAPI.getNeedToRebuildShaders = (cellBO, ren, actor) => {
let lightComplexity = 0;
let numberOfLights = 0;
const primType = cellBO.getPrimitiveType();
const poly = model.currentInput;
// different algo from C++ as of 5/2019
let needLighting = false;
const pointNormals = poly.getPointData().getNormals();
const cellNormals = poly.getCellData().getNormals();
const flat = actor.getProperty().getInterpolation() === Shading.FLAT;
const representation = actor.getProperty().getRepresentation();
const mode = cellBO.getOpenGLMode(representation, primType);
// 1) all surfaces need lighting
if (mode === model.context.TRIANGLES) {
needLighting = true;
// 2) all cell normals without point normals need lighting
} else Iif (cellNormals && !pointNormals) {
needLighting = true;
// 3) Phong + pointNormals need lighting
} else if (!flat && pointNormals) {
needLighting = true;
// 4) Phong Lines need lighting
} else if (!flat && mode === model.context.LINES) {
needLighting = true;
}
// 5) everything else is unlit
// do we need lighting?
if (actor.getProperty().getLighting() && needLighting) {
// consider the lighting complexity to determine which case applies
// simple headlight, Light Kit, the whole feature set of VTK
lightComplexity = 0;
const lights = ren.getLightsByReference();
for (let index = 0; index < lights.length; ++index) {
const light = lights[index];
const status = light.getSwitch();
if (status > 0) {
numberOfLights++;
if (lightComplexity === 0) {
lightComplexity = 1;
}
}
if (
lightComplexity === 1 &&
(numberOfLights > 1 ||
light.getIntensity() !== 1.0 ||
!light.lightTypeIsHeadLight())
) {
lightComplexity = 2;
}
if (lightComplexity < 3 && light.getPositional()) {
lightComplexity = 3;
}
}
}
let needRebuild = false;
const lastLightComplexity = model.lastBoundBO.getReferenceByName(
'lastLightComplexity'
);
const lastLightCount =
model.lastBoundBO.getReferenceByName('lastLightCount');
if (
lastLightComplexity !== lightComplexity ||
lastLightCount !== numberOfLights
) {
model.lastBoundBO.set({ lastLightComplexity: lightComplexity }, true);
model.lastBoundBO.set({ lastLightCount: numberOfLights }, true);
needRebuild = true;
}
// has the render pass shader replacement changed? Two options
if (
(!model.currentRenderPass && model.lastRenderPassShaderReplacement) ||
(model.currentRenderPass &&
model.currentRenderPass.getShaderReplacement() !==
model.lastRenderPassShaderReplacement)
) {
needRebuild = true;
}
// has something changed that would require us to recreate the shader?
// candidates are
// property modified (representation interpolation and lighting)
// input modified
// light complexity changed
// render pass shader replacement changed
if (
model.lastHaveSeenDepthRequest !== model.haveSeenDepthRequest ||
cellBO.getShaderSourceTime().getMTime() < model.renderable.getMTime() ||
cellBO.getShaderSourceTime().getMTime() < model.currentInput.getMTime() ||
cellBO.getShaderSourceTime().getMTime() <
model.selectionStateChanged.getMTime() ||
needRebuild
) {
model.lastHaveSeenDepthRequest = model.haveSeenDepthRequest;
return true;
}
return false;
};
publicAPI.invokeShaderCallbacks = (cellBO, ren, actor) => {
const listCallbacks =
model.renderable.getViewSpecificProperties().ShadersCallbacks;
Iif (listCallbacks) {
listCallbacks.forEach((object) => {
object.callback(object.userData, cellBO, ren, actor);
});
}
};
publicAPI.setMapperShaderParameters = (cellBO, ren, actor) => {
// Now to update the VAO too, if necessary.
Iif (cellBO.getProgram().isUniformUsed('PrimitiveIDOffset')) {
cellBO
.getProgram()
.setUniformi('PrimitiveIDOffset', model.primitiveIDOffset);
}
if (cellBO.getProgram().isUniformUsed('VertexIDOffset')) {
cellBO.getProgram().setUniformi('VertexIDOffset', model.vertexIDOffset);
}
if (
cellBO.getCABO().getElementCount() &&
(model.VBOBuildTime.getMTime() >
cellBO.getAttributeUpdateTime().getMTime() ||
cellBO.getShaderSourceTime().getMTime() >
cellBO.getAttributeUpdateTime().getMTime())
) {
const lastLightComplexity = model.lastBoundBO.getReferenceByName(
'lastLightComplexity'
);
if (cellBO.getProgram().isAttributeUsed('vertexMC')) {
Iif (
!cellBO
.getVAO()
.addAttributeArray(
cellBO.getProgram(),
cellBO.getCABO(),
'vertexMC',
cellBO.getCABO().getVertexOffset(),
cellBO.getCABO().getStride(),
model.context.FLOAT,
3,
false
)
) {
vtkErrorMacro('Error setting vertexMC in shader VAO.');
}
}
if (
cellBO.getProgram().isAttributeUsed('normalMC') &&
cellBO.getCABO().getNormalOffset() &&
lastLightComplexity > 0
) {
Iif (
!cellBO
.getVAO()
.addAttributeArray(
cellBO.getProgram(),
cellBO.getCABO(),
'normalMC',
cellBO.getCABO().getNormalOffset(),
cellBO.getCABO().getStride(),
model.context.FLOAT,
3,
false
)
) {
vtkErrorMacro('Error setting normalMC in shader VAO.');
}
} else {
cellBO.getVAO().removeAttributeArray('normalMC');
}
model.renderable.getCustomShaderAttributes().forEach((attrName, idx) => {
if (cellBO.getProgram().isAttributeUsed(`${attrName}MC`)) {
if (
!cellBO
.getVAO()
.addAttributeArray(
cellBO.getProgram(),
cellBO.getCABO(),
`${attrName}MC`,
cellBO.getCABO().getCustomData()[idx].offset,
cellBO.getCABO().getStride(),
model.context.FLOAT,
cellBO.getCABO().getCustomData()[idx].components,
false
)
) {
vtkErrorMacro(`Error setting ${attrName}MC in shader VAO.`);
}
}
});
if (
cellBO.getProgram().isAttributeUsed('tcoordMC') &&
cellBO.getCABO().getTCoordOffset()
) {
Iif (
!cellBO
.getVAO()
.addAttributeArray(
cellBO.getProgram(),
cellBO.getCABO(),
'tcoordMC',
cellBO.getCABO().getTCoordOffset(),
cellBO.getCABO().getStride(),
model.context.FLOAT,
cellBO.getCABO().getTCoordComponents(),
false
)
) {
vtkErrorMacro('Error setting tcoordMC in shader VAO.');
}
} else {
cellBO.getVAO().removeAttributeArray('tcoordMC');
}
if (
cellBO.getProgram().isAttributeUsed('scalarColor') &&
cellBO.getCABO().getColorComponents()
) {
Iif (
!cellBO
.getVAO()
.addAttributeArray(
cellBO.getProgram(),
cellBO.getCABO().getColorBO(),
'scalarColor',
cellBO.getCABO().getColorOffset(),
cellBO.getCABO().getColorBOStride(),
model.context.UNSIGNED_BYTE,
4,
true
)
) {
vtkErrorMacro('Error setting scalarColor in shader VAO.');
}
} else {
cellBO.getVAO().removeAttributeArray('scalarColor');
}
cellBO.getAttributeUpdateTime().modified();
}
if (model.renderable.getNumberOfClippingPlanes()) {
// add all the clipping planes
const numClipPlanes = model.renderable.getNumberOfClippingPlanes();
const planeEquations = [];
const shiftScaleEnabled = cellBO.getCABO().getCoordShiftAndScaleEnabled();
const inverseShiftScaleMatrix = shiftScaleEnabled
? cellBO.getCABO().getInverseShiftAndScaleMatrix()
: null;
const mat = inverseShiftScaleMatrix
? mat4.copy(model.tmpMat4, actor.getMatrix())
: actor.getMatrix();
if (inverseShiftScaleMatrix) {
mat4.transpose(mat, mat);
mat4.multiply(mat, mat, inverseShiftScaleMatrix);
mat4.transpose(mat, mat);
}
for (let i = 0; i < numClipPlanes; i++) {
const planeEquation = [];
model.renderable.getClippingPlaneInDataCoords(mat, i, planeEquation);
for (let j = 0; j < 4; j++) {
planeEquations.push(planeEquation[j]);
}
}
cellBO.getProgram().setUniformi('numClipPlanes', numClipPlanes);
cellBO.getProgram().setUniform4fv('clipPlanes', planeEquations);
}
if (
model.internalColorTexture &&
cellBO.getProgram().isUniformUsed('texture1')
) {
cellBO
.getProgram()
.setUniformi('texture1', model.internalColorTexture.getTextureUnit());
}
const tus = model.openGLActor.getActiveTextures();
if (tus) {
for (let index = 0; index < tus.length; ++index) {
const tex = tus[index];
const texUnit = tex.getTextureUnit();
const tname = `texture${texUnit + 1}`;
if (cellBO.getProgram().isUniformUsed(tname)) {
cellBO.getProgram().setUniformi(tname, texUnit);
}
}
}
// handle depth requests
if (model.haveSeenDepthRequest) {
cellBO
.getProgram()
.setUniformi('depthRequest', model.renderDepth ? 1 : 0);
}
// handle coincident
if (cellBO.getProgram().isUniformUsed('coffset')) {
const cp = publicAPI.getCoincidentParameters(ren, actor);
cellBO.getProgram().setUniformf('coffset', cp.offset);
// cfactor isn't always used when coffset is.
if (cellBO.getProgram().isUniformUsed('cfactor')) {
cellBO.getProgram().setUniformf('cfactor', cp.factor);
}
}
// handle wide lines
cellBO.setMapperShaderParameters(
ren,
actor,
model._openGLRenderer.getTiledSizeAndOrigin()
);
const selector = model._openGLRenderer.getSelector();
cellBO
.getProgram()
.setUniform3fArray(
'mapperIndex',
selector ? selector.getPropColorValue() : [0.0, 0.0, 0.0]
);
cellBO
.getProgram()
.setUniformi('picking', selector ? selector.getCurrentPass() + 1 : 0);
};
publicAPI.setLightingShaderParameters = (cellBO, ren, actor) => {
// for unlit and headlight there are no lighting parameters
const lastLightComplexity = model.lastBoundBO.getReferenceByName(
'lastLightComplexity'
);
if (lastLightComplexity < 2) {
return;
}
const program = cellBO.getProgram();
// bind some light settings
let numberOfLights = 0;
const lights = ren.getLightsByReference();
for (let index = 0; index < lights.length; ++index) {
const light = lights[index];
const status = light.getSwitch();
if (status > 0.0) {
const dColor = light.getColorByReference();
const intensity = light.getIntensity();
model.lightColor[0] = dColor[0] * intensity;
model.lightColor[1] = dColor[1] * intensity;
model.lightColor[2] = dColor[2] * intensity;
// get required info from light
const ld = light.getDirection();
const transform = ren.getActiveCamera().getViewMatrix();
const newLightDirection = [...ld];
if (light.lightTypeIsSceneLight()) {
newLightDirection[0] =
transform[0] * ld[0] + transform[1] * ld[1] + transform[2] * ld[2];
newLightDirection[1] =
transform[4] * ld[0] + transform[5] * ld[1] + transform[6] * ld[2];
newLightDirection[2] =
transform[8] * ld[0] + transform[9] * ld[1] + transform[10] * ld[2];
vtkMath.normalize(newLightDirection);
}
model.lightDirection[0] = newLightDirection[0];
model.lightDirection[1] = newLightDirection[1];
model.lightDirection[2] = newLightDirection[2];
vtkMath.normalize(model.lightDirection);
program.setUniform3fArray(
`lightColor${numberOfLights}`,
model.lightColor
);
program.setUniform3fArray(
`lightDirectionVC${numberOfLights}`,
model.lightDirection
);
numberOfLights++;
}
}
// we are done unless we have positional lights
if (lastLightComplexity < 3) {
return;
}
// for lightkit case there are some parameters to set
const cam = ren.getActiveCamera();
const viewTF = cam.getViewMatrix();
mat4.transpose(viewTF, viewTF);
numberOfLights = 0;
for (let index = 0; index < lights.length; ++index) {
const light = lights[index];
const status = light.getSwitch();
if (status > 0.0) {
const lp = light.getTransformedPosition();
const np = new Float64Array(3);
vec3.transformMat4(np, lp, viewTF);
program.setUniform3fArray(
`lightAttenuation${numberOfLights}`,
light.getAttenuationValuesByReference()
);
program.setUniformi(
`lightPositional${numberOfLights}`,
light.getPositional()
);
program.setUniformf(
`lightExponent${numberOfLights}`,
light.getExponent()
);
program.setUniformf(
`lightConeAngle${numberOfLights}`,
light.getConeAngle()
);
program.setUniform3fArray(`lightPositionVC${numberOfLights}`, [
np[0],
np[1],
np[2],
]);
numberOfLights++;
}
}
};
function safeMatrixMultiply(matrixArray, matrixType, tmpMat) {
matrixType.identity(tmpMat);
return matrixArray.reduce((res, matrix, index) => {
if (index === 0) {
return matrix ? matrixType.copy(res, matrix) : matrixType.identity(res);
}
return matrix ? matrixType.multiply(res, res, matrix) : res;
}, tmpMat);
}
publicAPI.setCameraShaderParameters = (cellBO, ren, actor) => {
const program = cellBO.getProgram();
// [WMVP]C == {world, model, view, projection} coordinates
// E.g., WCPC == world to projection coordinate transformation
const keyMats = model.openGLCamera.getKeyMatrices(ren);
const cam = ren.getActiveCamera();
const camm = model.openGLCamera.getKeyMatrixTime().getMTime();
const progm = program.getLastCameraMTime();
const shiftScaleEnabled = cellBO.getCABO().getCoordShiftAndScaleEnabled();
const inverseShiftScaleMatrix = shiftScaleEnabled
? cellBO.getCABO().getInverseShiftAndScaleMatrix()
: null;
const actorIsIdentity = actor.getIsIdentity();
const actMats = actorIsIdentity
? { mcwc: null, normalMatrix: null }
: model.openGLActor.getKeyMatrices();
if (actor.getCoordinateSystem() === CoordinateSystem.DISPLAY) {
const size = model._openGLRenderer.getTiledSizeAndOrigin();
mat4.identity(model.tmpMat4);
model.tmpMat4[0] = 2.0 / size.usize;
model.tmpMat4[12] = -1.0;
model.tmpMat4[5] = 2.0 / size.vsize;
model.tmpMat4[13] = -1.0;
mat4.multiply(model.tmpMat4, model.tmpMat4, inverseShiftScaleMatrix);
program.setUniformMatrix('MCPCMatrix', model.tmpMat4);
} else {
program.setUniformMatrix(
'MCPCMatrix',
safeMatrixMultiply(
[keyMats.wcpc, actMats.mcwc, inverseShiftScaleMatrix],
mat4,
model.tmpMat4
)
);
}
if (program.isUniformUsed('MCVCMatrix')) {
program.setUniformMatrix(
'MCVCMatrix',
safeMatrixMultiply(
[keyMats.wcvc, actMats.mcwc, inverseShiftScaleMatrix],
mat4,
model.tmpMat4
)
);
}
if (program.isUniformUsed('normalMatrix')) {
program.setUniformMatrix3x3(
'normalMatrix',
safeMatrixMultiply(
[keyMats.normalMatrix, actMats.normalMatrix],
mat3,
model.tmpMat3
)
);
}
if (progm !== camm) {
if (program.isUniformUsed('cameraParallel')) {
program.setUniformi('cameraParallel', cam.getParallelProjection());
}
program.setLastCameraMTime(camm);
}
if (!actorIsIdentity) {
// reset the cam mtime as actor modified the shader values
program.setLastCameraMTime(0);
}
};
publicAPI.setPropertyShaderParameters = (cellBO, ren, actor) => {
const program = cellBO.getProgram();
let ppty = actor.getProperty();
let opacity = ppty.getOpacity();
let aColor = model.drawingEdges
? ppty.getEdgeColorByReference()
: ppty.getAmbientColorByReference();
let dColor = model.drawingEdges
? ppty.getEdgeColorByReference()
: ppty.getDiffuseColorByReference();
let aIntensity = model.drawingEdges ? 1.0 : ppty.getAmbient();
let dIntensity = model.drawingEdges ? 0.0 : ppty.getDiffuse();
let sIntensity = model.drawingEdges ? 0.0 : ppty.getSpecular();
const specularPower = ppty.getSpecularPower();
program.setUniformf('opacityUniform', opacity);
program.setUniform3fArray('ambientColorUniform', aColor);
program.setUniform3fArray('diffuseColorUniform', dColor);
program.setUniformf('ambient', aIntensity);
program.setUniformf('diffuse', dIntensity);
// we are done unless we have lighting
const lastLightComplexity = model.lastBoundBO.getReferenceByName(
'lastLightComplexity'
);
if (lastLightComplexity < 1) {
return;
}
let sColor = ppty.getSpecularColorByReference();
program.setUniform3fArray('specularColorUniform', sColor);
program.setUniformf('specularPowerUniform', specularPower);
program.setUniformf('specular', sIntensity);
// now set the backface properties if we have them
Iif (program.isUniformUsed('ambientIntensityBF')) {
ppty = actor.getBackfaceProperty();
opacity = ppty.getOpacity();
aColor = ppty.getAmbientColor();
aIntensity = ppty.getAmbient();
dColor = ppty.getDiffuseColor();
dIntensity = ppty.getDiffuse();
sColor = ppty.getSpecularColor();
sIntensity = ppty.getSpecular();
program.setUniformf('ambientIntensityBF', aIntensity);
program.setUniformf('diffuseIntensityBF', dIntensity);
program.setUniformf('opacityUniformBF', opacity);
program.setUniform3fArray('ambientColorUniformBF', aColor);
program.setUniform3fArray('diffuseColorUniformBF', dColor);
// we are done unless we have lighting
if (lastLightComplexity < 1) {
return;
}
program.setUniformf('specularIntensityBF', sIntensity);
program.setUniform3fArray('specularColorUniformBF', sColor);
program.setUniformf('specularPowerUniformBF', specularPower);
}
};
publicAPI.updateMaximumPointCellIds = (ren, actor) => {
const selector = model._openGLRenderer.getSelector();
if (!selector) {
return;
}
if (model.selectionWebGLIdsToVTKIds?.points?.length) {
const length = model.selectionWebGLIdsToVTKIds.points.length;
selector.setMaximumPointId(length - 1);
}
if (model.selectionWebGLIdsToVTKIds?.cells?.length) {
const length = model.selectionWebGLIdsToVTKIds.cells.length;
selector.setMaximumCellId(length - 1);
}
const fieldAssociation = selector.getFieldAssociation();
if (fieldAssociation === FieldAssociations.FIELD_ASSOCIATION_POINTS) {
model.pointPicking = true;
}
};
publicAPI.renderPieceStart = (ren, actor) => {
model.primitiveIDOffset = 0;
model.vertexIDOffset = 0;
const picking = getPickState(model._openGLRenderer);
if (model.lastSelectionState !== picking) {
model.selectionStateChanged.modified();
model.lastSelectionState = picking;
}
if (model._openGLRenderer.getSelector()) {
switch (picking) {
default:
model._openGLRenderer.getSelector().renderProp(actor);
}
}
// make sure the BOs are up to date
publicAPI.updateBufferObjects(ren, actor);
// If we are coloring by texture, then load the texture map.
// Use Map as indicator, because texture hangs around.
if (model.renderable.getColorTextureMap()) {
model.internalColorTexture.activate();
}
// Bind the OpenGL, this is shared between the different primitive/cell types.
model.lastBoundBO = null;
};
publicAPI.renderPieceDraw = (ren, actor) => {
const representation = actor.getProperty().getRepresentation();
const drawSurfaceWithEdges =
actor.getProperty().getEdgeVisibility() &&
representation === Representation.SURFACE;
const selector = model._openGLRenderer.getSelector();
// If we are picking points, we need to tell it to the helper
const pointPicking =
selector &&
selector.getFieldAssociation() ===
FieldAssociations.FIELD_ASSOCIATION_POINTS &&
(model.lastSelectionState === PassTypes.ID_LOW24 ||
model.lastSelectionState === PassTypes.ID_HIGH24);
// for every primitive type
for (let i = primTypes.Start; i < primTypes.End; i++) {
model.primitives[i].setPointPicking(pointPicking);
const cabo = model.primitives[i].getCABO();
if (cabo.getElementCount()) {
// are we drawing edges
model.drawingEdges =
drawSurfaceWithEdges &&
(i === primTypes.TrisEdges || i === primTypes.TriStripsEdges);
// don't draw edges when rendering depth or rendering for picking
if (
!model.drawingEdges ||
!(model.renderDepth || model.lastSelectionState >= 0)
) {
model.lastBoundBO = model.primitives[i];
model.primitiveIDOffset += model.primitives[i].drawArrays(
ren,
actor,
representation,
publicAPI
);
model.vertexIDOffset += model.primitives[i]
.getCABO()
.getElementCount();
}
}
}
};
publicAPI.renderPieceFinish = (ren, actor) => {
Iif (model.LastBoundBO) {
model.LastBoundBO.getVAO().release();
}
if (model.renderable.getColorTextureMap()) {
model.internalColorTexture.deactivate();
}
};
publicAPI.renderPiece = (ren, actor) => {
// Make sure that we have been properly initialized.
// if (ren.getRenderWindow().checkAbortStatus()) {
// return;
// }
publicAPI.invokeEvent(StartEvent);
if (!model.renderable.getStatic()) {
model.renderable.update();
}
model.currentInput = model.renderable.getInputData();
publicAPI.invokeEvent(EndEvent);
Iif (!model.currentInput) {
vtkErrorMacro('No input!');
return;
}
// if there are no points then we are done
Iif (
!model.currentInput.getPoints ||
!model.currentInput.getPoints().getNumberOfValues()
) {
return;
}
// apply faceCulling
const gl = model.context;
const backfaceCulling = actor.getProperty().getBackfaceCulling();
const frontfaceCulling = actor.getProperty().getFrontfaceCulling();
if (!backfaceCulling && !frontfaceCulling) {
model._openGLRenderWindow.disableCullFace();
} else Eif (frontfaceCulling) {
model._openGLRenderWindow.enableCullFace();
gl.cullFace(gl.FRONT);
} else {
model._openGLRenderWindow.enableCullFace();
gl.cullFace(gl.BACK);
}
publicAPI.renderPieceStart(ren, actor);
publicAPI.renderPieceDraw(ren, actor);
publicAPI.renderPieceFinish(ren, actor);
};
publicAPI.computeBounds = (ren, actor) => {
if (!publicAPI.getInput()) {
vtkMath.uninitializeBounds(model.bounds);
return;
}
model.bounds = publicAPI.getInput().getBounds();
};
publicAPI.updateBufferObjects = (ren, actor) => {
// Rebuild buffers if needed
if (publicAPI.getNeedToRebuildBufferObjects(ren, actor)) {
publicAPI.buildBufferObjects(ren, actor);
}
};
publicAPI.getNeedToRebuildBufferObjects = (ren, actor) => {
// first do a coarse check
// Note that the actor's mtime includes it's properties mtime
const vmtime = model.VBOBuildTime.getMTime();
if (
vmtime < publicAPI.getMTime() ||
vmtime < model.renderable.getMTime() ||
vmtime < actor.getMTime() ||
vmtime < model.currentInput.getMTime()
) {
return true;
}
return false;
};
publicAPI.buildBufferObjects = (ren, actor) => {
const poly = model.currentInput;
Iif (poly === null) {
return;
}
model.renderable.mapScalars(poly, 1.0);
const c = model.renderable.getColorMapColors();
model.haveCellScalars = false;
const scalarMode = model.renderable.getScalarMode();
if (model.renderable.getScalarVisibility()) {
// We must figure out how the scalars should be mapped to the polydata.
if (
(scalarMode === ScalarMode.USE_CELL_DATA ||
scalarMode === ScalarMode.USE_CELL_FIELD_DATA ||
scalarMode === ScalarMode.USE_FIELD_DATA ||
!poly.getPointData().getScalars()) &&
scalarMode !== ScalarMode.USE_POINT_FIELD_DATA &&
c
) {
model.haveCellScalars = true;
}
}
// Do we have normals?
let n =
actor.getProperty().getInterpolation() !== Shading.FLAT
? poly.getPointData().getNormals()
: null;
Iif (n === null && poly.getCellData().getNormals()) {
model.haveCellNormals = true;
n = poly.getCellData().getNormals();
}
// rebuild the VBO if the data has changed we create a string for the VBO what
// can change the VBO? points normals tcoords colors so what can change those?
// the input data is clearly one as it can change all four items tcoords may
// haveTextures or not colors may change based on quite a few mapping
// parameters in the mapper
const representation = actor.getProperty().getRepresentation();
let tcoords = poly.getPointData().getTCoords();
if (!model.openGLActor.getActiveTextures()) {
tcoords = null;
}
// handle color mapping via texture
if (model.renderable.getColorCoordinates()) {
tcoords = model.renderable.getColorCoordinates();
if (!model.internalColorTexture) {
model.internalColorTexture = vtkOpenGLTexture.newInstance({
resizable: true,
});
}
const tex = model.internalColorTexture;
// the following 4 lines allow for NPOT textures
tex.setMinificationFilter(Filter.NEAREST);
tex.setMagnificationFilter(Filter.NEAREST);
tex.setWrapS(Wrap.CLAMP_TO_EDGE);
tex.setWrapT(Wrap.CLAMP_TO_EDGE);
tex.setOpenGLRenderWindow(model._openGLRenderWindow);
const input = model.renderable.getColorTextureMap();
const ext = input.getExtent();
const inScalars = input.getPointData().getScalars();
tex.create2DFromRaw(
ext[1] - ext[0] + 1,
ext[3] - ext[2] + 1,
inScalars.getNumberOfComponents(),
inScalars.getDataType(),
inScalars.getData()
);
tex.activate();
tex.sendParameters();
tex.deactivate();
}
const toString =
`${poly.getMTime()}A${representation}B${poly.getMTime()}` +
`C${n ? n.getMTime() : 1}D${c ? c.getMTime() : 1}` +
`E${actor.getProperty().getEdgeVisibility()}` +
`F${tcoords ? tcoords.getMTime() : 1}`;
if (model.VBOBuildString !== toString) {
// Build the VBOs
const points = poly.getPoints();
const options = {
points,
normals: n,
tcoords,
colors: c,
cellOffset: 0,
vertexOffset: 0, // Used to keep track of vertex ids across primitives for selection
haveCellScalars: model.haveCellScalars,
haveCellNormals: model.haveCellNormals,
customAttributes: model.renderable
.getCustomShaderAttributes()
.map((arrayName) => poly.getPointData().getArrayByName(arrayName)),
};
if (model.renderable.getPopulateSelectionSettings()) {
model.selectionWebGLIdsToVTKIds = {
points: null,
cells: null,
};
}
const primitives = [
{ inRep: 'verts', cells: poly.getVerts() },
{ inRep: 'lines', cells: poly.getLines() },
{ inRep: 'polys', cells: poly.getPolys() },
{ inRep: 'strips', cells: poly.getStrips() },
{ inRep: 'polys', cells: poly.getPolys() },
{ inRep: 'strips', cells: poly.getStrips() },
];
const drawSurfaceWithEdges =
actor.getProperty().getEdgeVisibility() &&
representation === Representation.SURFACE;
for (let i = primTypes.Start; i < primTypes.End; i++) {
if (i !== primTypes.TrisEdges && i !== primTypes.TriStripsEdges) {
options.cellOffset += model.primitives[i]
.getCABO()
.createVBO(
primitives[i].cells,
primitives[i].inRep,
representation,
options,
model.selectionWebGLIdsToVTKIds
);
options.vertexOffset += model.primitives[i]
.getCABO()
.getElementCount();
} else {
// if we have edge visibility build the edge VBOs
if (drawSurfaceWithEdges) {
// VBOs for edges in "surface with edges" are the last to be built,
// they are not used when picking with a hardware selector so they
// don't need selectionWebGLIdsToVTKIds and don't update cellOffset and vertexOffset
model.primitives[i]
.getCABO()
.createVBO(
primitives[i].cells,
primitives[i].inRep,
Representation.WIREFRAME,
{
...options,
tcoords: null,
colors: null,
haveCellScalars: false,
haveCellNormals: false,
}
);
} else {
// otherwise free them
model.primitives[i].releaseGraphicsResources();
}
}
}
if (model.renderable.getPopulateSelectionSettings()) {
model.renderable.setSelectionWebGLIdsToVTKIds(
model.selectionWebGLIdsToVTKIds
);
publicAPI.updateMaximumPointCellIds();
}
model.VBOBuildTime.modified();
model.VBOBuildString = toString;
}
};
publicAPI.getAllocatedGPUMemoryInBytes = () => {
let memUsed = 0;
model.primitives.forEach((prim) => {
memUsed += prim.getAllocatedGPUMemoryInBytes();
});
// Return in MB
return memUsed;
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
context: null,
VBOBuildTime: 0,
VBOBuildString: null,
primitives: null,
primTypes: null,
shaderRebuildString: null,
tmpMat4: null,
ambientColor: [], // used internally
diffuseColor: [], // used internally
specularColor: [], // used internally
lightColor: [], // used internally
lightDirection: [], // used internally
lastHaveSeenDepthRequest: false,
haveSeenDepthRequest: false,
lastSelectionState: PassTypes.MIN_KNOWN_PASS - 1,
selectionStateChanged: null,
selectionWebGLIdsToVTKIds: null,
pointPicking: false,
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Inheritance
vtkViewNode.extend(publicAPI, model, initialValues);
vtkReplacementShaderMapper.implementReplaceShaderCoincidentOffset(
publicAPI,
model,
initialValues
);
vtkReplacementShaderMapper.implementBuildShadersWithReplacements(
publicAPI,
model,
initialValues
);
model.primitives = [];
model.primTypes = primTypes;
model.tmpMat3 = mat3.identity(new Float64Array(9));
model.tmpMat4 = mat4.identity(new Float64Array(16));
for (let i = primTypes.Start; i < primTypes.End; i++) {
model.primitives[i] = vtkHelper.newInstance();
model.primitives[i].setPrimitiveType(i);
model.primitives[i].set(
{ lastLightComplexity: 0, lastLightCount: 0, lastSelectionPass: false },
true
);
}
// Build VTK API
macro.setGet(publicAPI, model, ['context']);
model.VBOBuildTime = {};
macro.obj(model.VBOBuildTime, { mtime: 0 });
model.selectionStateChanged = {};
macro.obj(model.selectionStateChanged, { mtime: 0 });
// Object methods
vtkOpenGLPolyDataMapper(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkOpenGLPolyDataMapper');
// ----------------------------------------------------------------------------
export default { newInstance, extend };
// Register ourself to OpenGL backend if imported
registerOverride('vtkMapper', newInstance);
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