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40x 40x 40x 40x 40x 40x 40x 40x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 28x 42x 27x 27x 42x 42x 42x 42x 42x 42x 42x 42x 42x 42x 43008x 43008x 42x 42x 42x 42x 42x 42x 42x 42x 28x 1x 1x 1x 28x 1x 1x 1x 28x 28x 28x 28x 28x 28x 28x 28x 28x 28x 28x 28x 28x 28x 28x 28x 1x 1x | import { mat3, mat4 } from 'gl-matrix';
import Constants from 'vtk.js/Sources/Rendering/Core/ImageMapper/Constants';
import * as macro from 'vtk.js/Sources/macros';
import vtkDataArray from 'vtk.js/Sources/Common/Core/DataArray';
import { VtkDataTypes } from 'vtk.js/Sources/Common/Core/DataArray/Constants';
import vtkHelper from 'vtk.js/Sources/Rendering/OpenGL/Helper';
import * as vtkMath from 'vtk.js/Sources/Common/Core/Math';
import vtkOpenGLTexture from 'vtk.js/Sources/Rendering/OpenGL/Texture';
import vtkShaderProgram from 'vtk.js/Sources/Rendering/OpenGL/ShaderProgram';
import vtkViewNode from 'vtk.js/Sources/Rendering/SceneGraph/ViewNode';
import { Representation } from 'vtk.js/Sources/Rendering/Core/Property/Constants';
import {
Wrap,
Filter,
} from 'vtk.js/Sources/Rendering/OpenGL/Texture/Constants';
import { InterpolationType } from 'vtk.js/Sources/Rendering/Core/ImageProperty/Constants';
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';
const { vtkErrorMacro } = macro;
const { SlicingMode } = Constants;
// ----------------------------------------------------------------------------
// helper methods
// ----------------------------------------------------------------------------
function computeFnToString(property, pwfun, numberOfComponents) {
if (pwfun) {
const iComps = property.getIndependentComponents();
return `${pwfun.getMTime()}-${iComps}-${numberOfComponents}`;
}
return '0';
}
function splitStringOnEnter(inputString) {
// Split the input string into an array of lines based on "Enter" (newline) characters
// Remove any leading or trailing whitespace from each line and filter out empty lines
const lines = inputString.split('\n');
const trimmedLines = [];
for (let i = 0; i < lines.length; ++i) {
const trimmedLine = lines[i].trim();
if (trimmedLine.length > 0) {
trimmedLines.push(trimmedLine);
}
}
return trimmedLines;
}
// ----------------------------------------------------------------------------
// vtkOpenGLImageMapper methods
// ----------------------------------------------------------------------------
function vtkOpenGLImageMapper(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkOpenGLImageMapper');
publicAPI.buildPass = (prepass) => {
if (prepass) {
model.currentRenderPass = null;
model.openGLImageSlice = publicAPI.getFirstAncestorOfType(
'vtkOpenGLImageSlice'
);
model._openGLRenderer =
publicAPI.getFirstAncestorOfType('vtkOpenGLRenderer');
model._openGLRenderWindow = model._openGLRenderer.getParent();
model.context = model._openGLRenderWindow.getContext();
model.tris.setOpenGLRenderWindow(model._openGLRenderWindow);
const ren = model._openGLRenderer.getRenderable();
model.openGLCamera = model._openGLRenderer.getViewNodeFor(
ren.getActiveCamera()
);
// is slice set by the camera
if (
model.renderable.isA('vtkImageMapper') &&
model.renderable.getSliceAtFocalPoint()
) {
model.renderable.setSliceFromCamera(ren.getActiveCamera());
}
}
};
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.getCoincidentParameters = (ren, actor) => {
if (model.renderable.getResolveCoincidentTopology()) {
return model.renderable.getCoincidentTopologyPolygonOffsetParameters();
}
return null;
};
// Renders myself
publicAPI.render = () => {
const actor = model.openGLImageSlice.getRenderable();
const ren = model._openGLRenderer.getRenderable();
publicAPI.renderPiece(ren, actor);
};
publicAPI.getShaderTemplate = (shaders, ren, actor) => {
shaders.Vertex = vtkPolyDataVS;
shaders.Fragment = vtkPolyDataFS;
shaders.Geometry = '';
};
publicAPI.replaceShaderValues = (shaders, ren, actor) => {
let VSSource = shaders.Vertex;
let FSSource = shaders.Fragment;
VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::Camera::Dec', [
'uniform mat4 MCPCMatrix;',
]).result;
VSSource = vtkShaderProgram.substitute(
VSSource,
'//VTK::PositionVC::Impl',
[' gl_Position = MCPCMatrix * vertexMC;']
).result;
VSSource = vtkShaderProgram.substitute(
VSSource,
'//VTK::TCoord::Impl',
'tcoordVCVSOutput = tcoordMC;'
).result;
VSSource = vtkShaderProgram.substitute(
VSSource,
'//VTK::TCoord::Dec',
'attribute vec2 tcoordMC; varying vec2 tcoordVCVSOutput;'
).result;
const tNumComp = model.openGLTexture.getComponents();
const iComps = actor.getProperty().getIndependentComponents();
let tcoordDec = [
'varying vec2 tcoordVCVSOutput;',
// color shift and scale
'uniform float cshift0;',
'uniform float cscale0;',
// pwf shift and scale
'uniform float pwfshift0;',
'uniform float pwfscale0;',
'uniform sampler2D texture1;',
'uniform sampler2D colorTexture1;',
'uniform sampler2D pwfTexture1;',
'uniform sampler2D labelOutlineTexture1;',
'uniform float opacity;',
'uniform float outlineOpacity;',
];
Iif (iComps) {
for (let comp = 1; comp < tNumComp; comp++) {
tcoordDec = tcoordDec.concat([
// color shift and scale
`uniform float cshift${comp};`,
`uniform float cscale${comp};`,
// weighting shift and scale
`uniform float pwfshift${comp};`,
`uniform float pwfscale${comp};`,
]);
}
// the heights defined below are the locations
// for the up to four components of the tfuns
// the tfuns have a height of 2XnumComps pixels so the
// values are computed to hit the middle of the two rows
// for that component
switch (tNumComp) {
case 1:
tcoordDec = tcoordDec.concat([
'uniform float mix0;',
'#define height0 0.5',
]);
break;
case 2:
tcoordDec = tcoordDec.concat([
'uniform float mix0;',
'uniform float mix1;',
'#define height0 0.25',
'#define height1 0.75',
]);
break;
case 3:
tcoordDec = tcoordDec.concat([
'uniform float mix0;',
'uniform float mix1;',
'uniform float mix2;',
'#define height0 0.17',
'#define height1 0.5',
'#define height2 0.83',
]);
break;
case 4:
tcoordDec = tcoordDec.concat([
'uniform float mix0;',
'uniform float mix1;',
'uniform float mix2;',
'uniform float mix3;',
'#define height0 0.125',
'#define height1 0.375',
'#define height2 0.625',
'#define height3 0.875',
]);
break;
default:
vtkErrorMacro('Unsupported number of independent coordinates.');
}
}
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::TCoord::Dec',
tcoordDec
).result;
// check for the outline thickness and opacity
const vtkImageLabelOutline = actor.getProperty().getUseLabelOutline();
if (vtkImageLabelOutline === true) {
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::LabelOutline::Dec',
[
'uniform int outlineThickness;',
'uniform float vpWidth;',
'uniform float vpHeight;',
'uniform float vpOffsetX;',
'uniform float vpOffsetY;',
'uniform mat4 PCWCMatrix;',
'uniform mat4 vWCtoIDX;',
'uniform ivec3 imageDimensions;',
]
).result;
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::ImageLabelOutlineOn',
'#define vtkImageLabelOutlineOn'
).result;
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::LabelOutlineHelperFunction',
[
'#ifdef vtkImageLabelOutlineOn',
'vec3 fragCoordToIndexSpace(vec4 fragCoord) {',
' vec4 pcPos = vec4(',
' (fragCoord.x / vpWidth - vpOffsetX - 0.5) * 2.0,',
' (fragCoord.y / vpHeight - vpOffsetY - 0.5) * 2.0,',
' (fragCoord.z - 0.5) * 2.0,',
' 1.0);',
'',
' vec4 worldCoord = PCWCMatrix * pcPos;',
' vec4 vertex = (worldCoord/worldCoord.w);',
'',
' vec3 index = (vWCtoIDX * vertex).xyz;',
'',
' // half voxel fix for labelmapOutline',
' return (index + vec3(0.5)) / vec3(imageDimensions);',
'}',
'#endif',
]
).result;
}
Iif (iComps) {
const rgba = ['r', 'g', 'b', 'a'];
let tcoordImpl = ['vec4 tvalue = texture2D(texture1, tcoordVCVSOutput);'];
for (let comp = 0; comp < tNumComp; comp++) {
tcoordImpl = tcoordImpl.concat([
`vec3 tcolor${comp} = mix${comp} * texture2D(colorTexture1, vec2(tvalue.${rgba[comp]} * cscale${comp} + cshift${comp}, height${comp})).rgb;`,
`float compWeight${comp} = mix${comp} * texture2D(pwfTexture1, vec2(tvalue.${rgba[comp]} * pwfscale${comp} + pwfshift${comp}, height${comp})).r;`,
]);
}
switch (tNumComp) {
case 1:
tcoordImpl = tcoordImpl.concat([
'gl_FragData[0] = vec4(tcolor0.rgb, opacity);',
]);
break;
case 2:
tcoordImpl = tcoordImpl.concat([
'float weightSum = compWeight0 + compWeight1;',
'gl_FragData[0] = vec4(vec3((tcolor0.rgb * (compWeight0 / weightSum)) + (tcolor1.rgb * (compWeight1 / weightSum))), opacity);',
]);
break;
case 3:
tcoordImpl = tcoordImpl.concat([
'float weightSum = compWeight0 + compWeight1 + compWeight2;',
'gl_FragData[0] = vec4(vec3((tcolor0.rgb * (compWeight0 / weightSum)) + (tcolor1.rgb * (compWeight1 / weightSum)) + (tcolor2.rgb * (compWeight2 / weightSum))), opacity);',
]);
break;
case 4:
tcoordImpl = tcoordImpl.concat([
'float weightSum = compWeight0 + compWeight1 + compWeight2 + compWeight3;',
'gl_FragData[0] = vec4(vec3((tcolor0.rgb * (compWeight0 / weightSum)) + (tcolor1.rgb * (compWeight1 / weightSum)) + (tcolor2.rgb * (compWeight2 / weightSum)) + (tcolor3.rgb * (compWeight3 / weightSum))), opacity);',
]);
break;
default:
vtkErrorMacro('Unsupported number of independent coordinates.');
}
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::TCoord::Impl',
tcoordImpl
).result;
} else {
// dependent components
switch (tNumComp) {
case 1:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::TCoord::Impl',
[
...splitStringOnEnter(
`
#ifdef vtkImageLabelOutlineOn
vec3 centerPosIS = fragCoordToIndexSpace(gl_FragCoord);
float centerValue = texture2D(texture1, centerPosIS.xy).r;
bool pixelOnBorder = false;
vec3 tColor = texture2D(colorTexture1, vec2(centerValue * cscale0 + cshift0, 0.5)).rgb;
float scalarOpacity = texture2D(pwfTexture1, vec2(centerValue * pwfscale0 + pwfshift0, 0.5)).r;
float opacityToUse = scalarOpacity * opacity;
int segmentIndex = int(centerValue * 255.0);
float textureCoordinate = float(segmentIndex - 1) / 1024.0;
float textureValue = texture2D(labelOutlineTexture1, vec2(textureCoordinate, 0.5)).r;
int actualThickness = int(textureValue * 255.0);
if (segmentIndex == 0){
gl_FragData[0] = vec4(0.0, 1.0, 1.0, 0.0);
return;
}
for (int i = -actualThickness; i <= actualThickness; i++) {
for (int j = -actualThickness; j <= actualThickness; j++) {
if (i == 0 || j == 0) {
continue;
}
vec4 neighborPixelCoord = vec4(gl_FragCoord.x + float(i),
gl_FragCoord.y + float(j),
gl_FragCoord.z, gl_FragCoord.w);
vec3 neighborPosIS = fragCoordToIndexSpace(neighborPixelCoord);
float value = texture2D(texture1, neighborPosIS.xy).r;
if (value != centerValue) {
pixelOnBorder = true;
break;
}
}
if (pixelOnBorder == true) {
break;
}
}
if (pixelOnBorder == true) {
gl_FragData[0] = vec4(tColor, outlineOpacity);
}
else {
gl_FragData[0] = vec4(tColor, opacityToUse);
}
#else
float intensity = texture2D(texture1, tcoordVCVSOutput).r;
vec3 tcolor = texture2D(colorTexture1, vec2(intensity * cscale0 + cshift0, 0.5)).rgb;
float scalarOpacity = texture2D(pwfTexture1, vec2(intensity * pwfscale0 + pwfshift0, 0.5)).r;
gl_FragData[0] = vec4(tcolor, scalarOpacity * opacity);
#endif
`
),
]
).result;
break;
case 2:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::TCoord::Impl',
[
'vec4 tcolor = texture2D(texture1, tcoordVCVSOutput);',
'float intensity = tcolor.r*cscale0 + cshift0;',
'gl_FragData[0] = vec4(texture2D(colorTexture1, vec2(intensity, 0.5)).rgb, pwfscale0*tcolor.g + pwfshift0);',
]
).result;
break;
case 3:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::TCoord::Impl',
[
'vec4 tcolor = cscale0*texture2D(texture1, tcoordVCVSOutput.st) + cshift0;',
'gl_FragData[0] = vec4(texture2D(colorTexture1, vec2(tcolor.r,0.5)).r,',
' texture2D(colorTexture1, vec2(tcolor.g,0.5)).r,',
' texture2D(colorTexture1, vec2(tcolor.b,0.5)).r, opacity);',
]
).result;
break;
default:
FSSource = vtkShaderProgram.substitute(
FSSource,
'//VTK::TCoord::Impl',
[
'vec4 tcolor = cscale0*texture2D(texture1, tcoordVCVSOutput.st) + cshift0;',
'gl_FragData[0] = vec4(texture2D(colorTexture1, vec2(tcolor.r,0.5)).r,',
' texture2D(colorTexture1, vec2(tcolor.g,0.5)).r,',
' texture2D(colorTexture1, vec2(tcolor.b,0.5)).r, tcolor.a);',
]
).result;
}
}
if (model.haveSeenDepthRequest) {
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.Vertex = VSSource;
shaders.Fragment = FSSource;
publicAPI.replaceShaderClip(shaders, ren, actor);
publicAPI.replaceShaderCoincidentOffset(shaders, ren, actor);
};
publicAPI.replaceShaderClip = (shaders, ren, actor) => {
let VSSource = shaders.Vertex;
let FSSource = shaders.Fragment;
if (model.renderable.getNumberOfClippingPlanes()) {
let numClipPlanes = model.renderable.getNumberOfClippingPlanes();
Iif (numClipPlanes > 6) {
macro.vtkErrorMacro('OpenGL has a limit of 6 clipping planes');
numClipPlanes = 6;
}
VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::Clip::Dec', [
'uniform int numClipPlanes;',
'uniform vec4 clipPlanes[6];',
'varying float clipDistancesVSOutput[6];',
]).result;
VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::Clip::Impl', [
'for (int planeNum = 0; planeNum < 6; 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[6];',
]).result;
FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::Clip::Impl', [
'for (int planeNum = 0; planeNum < 6; planeNum++)',
' {',
' if (planeNum >= numClipPlanes)',
' {',
' break;',
' }',
' if (clipDistancesVSOutput[planeNum] < 0.0) discard;',
' }',
]).result;
}
shaders.Vertex = VSSource;
shaders.Fragment = FSSource;
};
publicAPI.getNeedToRebuildShaders = (cellBO, ren, actor) => {
// 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
const tNumComp = model.openGLTexture.getComponents();
const iComp = actor.getProperty().getIndependentComponents();
// has the render pass shader replacement changed? Two options
let needRebuild = false;
if (
(!model.currentRenderPass && model.lastRenderPassShaderReplacement) ||
(model.currentRenderPass &&
model.currentRenderPass.getShaderReplacement() !==
model.lastRenderPassShaderReplacement)
) {
needRebuild = true;
}
if (
needRebuild ||
model.lastHaveSeenDepthRequest !== model.haveSeenDepthRequest ||
cellBO.getProgram()?.getHandle() === 0 ||
model.lastTextureComponents !== tNumComp ||
model.lastIndependentComponents !== iComp
) {
model.lastHaveSeenDepthRequest = model.haveSeenDepthRequest;
model.lastTextureComponents = tNumComp;
model.lastIndependentComponents = iComp;
return true;
}
return false;
};
publicAPI.updateShaders = (cellBO, ren, actor) => {
model.lastBoundBO = cellBO;
// has something changed that would require us to recreate the shader?
if (publicAPI.getNeedToRebuildShaders(cellBO, ren, actor)) {
const shaders = { Vertex: null, Fragment: null, Geometry: null };
publicAPI.buildShaders(shaders, ren, actor);
// compile and bind the program if needed
const newShader = model._openGLRenderWindow
.getShaderCache()
.readyShaderProgramArray(
shaders.Vertex,
shaders.Fragment,
shaders.Geometry
);
// if the shader changed reinitialize the VAO
if (newShader !== cellBO.getProgram()) {
cellBO.setProgram(newShader);
// reset the VAO as the shader has changed
cellBO.getVAO().releaseGraphicsResources();
}
cellBO.getShaderSourceTime().modified();
} else {
model._openGLRenderWindow
.getShaderCache()
.readyShaderProgram(cellBO.getProgram());
}
cellBO.getVAO().bind();
publicAPI.setMapperShaderParameters(cellBO, ren, actor);
publicAPI.setCameraShaderParameters(cellBO, ren, actor);
publicAPI.setPropertyShaderParameters(cellBO, ren, actor);
};
publicAPI.setMapperShaderParameters = (cellBO, ren, actor) => {
// Now to update the VAO too, if necessary.
if (
cellBO.getCABO().getElementCount() &&
(model.VBOBuildTime > cellBO.getAttributeUpdateTime().getMTime() ||
cellBO.getShaderSourceTime().getMTime() >
cellBO.getAttributeUpdateTime().getMTime())
) {
if (cellBO.getProgram().isAttributeUsed('vertexMC')) {
Iif (
!cellBO
.getVAO()
.addAttributeArray(
cellBO.getProgram(),
cellBO.getCABO(),
'vertexMC',
cellBO.getCABO().getVertexOffset(),
cellBO.getCABO().getStride(),
model.context.FLOAT,
3,
model.context.FALSE
)
) {
vtkErrorMacro('Error setting vertexMC 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(),
model.context.FALSE
)
) {
vtkErrorMacro('Error setting tcoordMC in shader VAO.');
}
}
cellBO.getAttributeUpdateTime().modified();
}
const texUnit = model.openGLTexture.getTextureUnit();
cellBO.getProgram().setUniformi('texture1', texUnit);
const numComp = model.openGLTexture.getComponents();
const iComps = actor.getProperty().getIndependentComponents();
Iif (iComps) {
for (let i = 0; i < numComp; i++) {
cellBO
.getProgram()
.setUniformf(`mix${i}`, actor.getProperty().getComponentWeight(i));
}
}
const oglShiftScale = model.openGLTexture.getShiftAndScale();
// three levels of shift scale combined into one
// for performance in the fragment shader
for (let i = 0; i < numComp; i++) {
let cw = actor.getProperty().getColorWindow();
let cl = actor.getProperty().getColorLevel();
const target = iComps ? i : 0;
const cfun = actor.getProperty().getRGBTransferFunction(target);
if (cfun && actor.getProperty().getUseLookupTableScalarRange()) {
const cRange = cfun.getRange();
cw = cRange[1] - cRange[0];
cl = 0.5 * (cRange[1] + cRange[0]);
}
const scale = oglShiftScale.scale / cw;
const shift = (oglShiftScale.shift - cl) / cw + 0.5;
cellBO.getProgram().setUniformf(`cshift${i}`, shift);
cellBO.getProgram().setUniformf(`cscale${i}`, scale);
}
// pwf shift/scale
for (let i = 0; i < numComp; i++) {
let pwfScale = 1.0;
let pwfShift = 0.0;
const target = iComps ? i : 0;
const pwfun = actor.getProperty().getPiecewiseFunction(target);
if (pwfun) {
const pwfRange = pwfun.getRange();
const length = pwfRange[1] - pwfRange[0];
const mid = 0.5 * (pwfRange[0] + pwfRange[1]);
pwfScale = oglShiftScale.scale / length;
pwfShift = (oglShiftScale.shift - mid) / length + 0.5;
}
cellBO.getProgram().setUniformf(`pwfshift${i}`, pwfShift);
cellBO.getProgram().setUniformf(`pwfscale${i}`, pwfScale);
}
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);
}
}
const texColorUnit = model.colorTexture.getTextureUnit();
cellBO.getProgram().setUniformi('colorTexture1', texColorUnit);
const texOpacityUnit = model.pwfTexture.getTextureUnit();
cellBO.getProgram().setUniformi('pwfTexture1', texOpacityUnit);
const outlineThicknessUnit =
model.labelOutlineThicknessTexture.getTextureUnit();
cellBO
.getProgram()
.setUniformi('labelOutlineTexture1', outlineThicknessUnit);
if (model.renderable.getNumberOfClippingPlanes()) {
// add all the clipping planes
let numClipPlanes = model.renderable.getNumberOfClippingPlanes();
Iif (numClipPlanes > 6) {
macro.vtkErrorMacro('OpenGL has a limit of 6 clipping planes');
numClipPlanes = 6;
}
const shiftScaleEnabled = cellBO.getCABO().getCoordShiftAndScaleEnabled();
const inverseShiftScaleMatrix = shiftScaleEnabled
? cellBO.getCABO().getInverseShiftAndScaleMatrix()
: null;
const mat = inverseShiftScaleMatrix
? mat4.copy(model.imagematinv, actor.getMatrix())
: actor.getMatrix();
if (inverseShiftScaleMatrix) {
mat4.transpose(mat, mat);
mat4.multiply(mat, mat, inverseShiftScaleMatrix);
mat4.transpose(mat, mat);
}
// transform crop plane normal with transpose(inverse(worldToIndex))
mat4.transpose(model.imagemat, model.currentInput.getIndexToWorld());
mat4.multiply(model.imagematinv, mat, model.imagemat);
const planeEquations = [];
for (let i = 0; i < numClipPlanes; i++) {
const planeEquation = [];
model.renderable.getClippingPlaneInDataCoords(
model.imagematinv,
i,
planeEquation
);
for (let j = 0; j < 4; j++) {
planeEquations.push(planeEquation[j]);
}
}
cellBO.getProgram().setUniformi('numClipPlanes', numClipPlanes);
cellBO.getProgram().setUniform4fv('clipPlanes', planeEquations);
}
// outline thickness and opacity
const vtkImageLabelOutline = actor.getProperty().getUseLabelOutline();
if (vtkImageLabelOutline === true) {
const outlineOpacity = actor.getProperty().getLabelOutlineOpacity();
cellBO.getProgram().setUniformf('outlineOpacity', outlineOpacity);
}
};
publicAPI.setCameraShaderParameters = (cellBO, ren, actor) => {
const program = cellBO.getProgram();
const actMats = model.openGLImageSlice.getKeyMatrices();
const image = model.currentInput;
const i2wmat4 = image.getIndexToWorld();
mat4.multiply(model.imagemat, actMats.mcwc, i2wmat4);
const keyMats = model.openGLCamera.getKeyMatrices(ren);
mat4.multiply(model.imagemat, keyMats.wcpc, model.imagemat);
if (cellBO.getCABO().getCoordShiftAndScaleEnabled()) {
const inverseShiftScaleMat = cellBO
.getCABO()
.getInverseShiftAndScaleMatrix();
mat4.multiply(model.imagemat, model.imagemat, inverseShiftScaleMat);
}
program.setUniformMatrix('MCPCMatrix', model.imagemat);
const vtkImageLabelOutline = actor.getProperty().getUseLabelOutline();
if (vtkImageLabelOutline === true) {
const worldToIndex = image.getWorldToIndex();
const imageDimensions = image.getDimensions();
program.setUniform3i(
'imageDimensions',
imageDimensions[0],
imageDimensions[1],
1
);
program.setUniformMatrix('vWCtoIDX', worldToIndex);
const labelOutlineKeyMats = model.openGLCamera.getKeyMatrices(ren);
// Get the projection coordinate to world coordinate transformation matrix.
mat4.invert(model.projectionToWorld, labelOutlineKeyMats.wcpc);
model.openGLCamera.getKeyMatrices(ren);
program.setUniformMatrix('PCWCMatrix', model.projectionToWorld);
const size = publicAPI.getRenderTargetSize();
program.setUniformf('vpWidth', size[0]);
program.setUniformf('vpHeight', size[1]);
const offset = publicAPI.getRenderTargetOffset();
program.setUniformf('vpOffsetX', offset[0] / size[0]);
program.setUniformf('vpOffsetY', offset[1] / size[1]);
}
};
publicAPI.setPropertyShaderParameters = (cellBO, ren, actor) => {
const program = cellBO.getProgram();
const ppty = actor.getProperty();
const opacity = ppty.getOpacity();
program.setUniformf('opacity', opacity);
};
publicAPI.renderPieceStart = (ren, actor) => {
// make sure the BOs are up to date
publicAPI.updateBufferObjects(ren, actor);
// Bind the OpenGL, this is shared between the different primitive/cell types.
model.lastBoundBO = null;
};
publicAPI.renderPieceDraw = (ren, actor) => {
const gl = model.context;
// activate the texture
model.openGLTexture.activate();
model.colorTexture.activate();
model.labelOutlineThicknessTexture.activate();
model.pwfTexture.activate();
// draw polygons
if (model.tris.getCABO().getElementCount()) {
// First we do the triangles, update the shader, set uniforms, etc.
publicAPI.updateShaders(model.tris, ren, actor);
gl.drawArrays(gl.TRIANGLES, 0, model.tris.getCABO().getElementCount());
model.tris.getVAO().release();
}
model.openGLTexture.deactivate();
model.colorTexture.deactivate();
model.labelOutlineThicknessTexture.deactivate();
model.pwfTexture.deactivate();
};
publicAPI.renderPieceFinish = (ren, actor) => {};
publicAPI.renderPiece = (ren, actor) => {
// Make sure that we have been properly initialized.
// if (ren.getRenderWindow().checkAbortStatus()) {
// return;
// }
publicAPI.invokeEvent({ type: 'StartEvent' });
model.renderable.update();
model.currentInput = model.renderable.getCurrentImage();
publicAPI.invokeEvent({ type: 'EndEvent' });
Iif (!model.currentInput) {
vtkErrorMacro('No input!');
return;
}
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
if (
model.VBOBuildTime.getMTime() < publicAPI.getMTime() ||
model.VBOBuildTime.getMTime() < actor.getMTime() ||
model.VBOBuildTime.getMTime() < model.renderable.getMTime() ||
model.VBOBuildTime.getMTime() < actor.getProperty().getMTime() ||
model.VBOBuildTime.getMTime() < model.currentInput.getMTime()
) {
return true;
}
return false;
};
publicAPI.buildBufferObjects = (ren, actor) => {
const image = model.currentInput;
Iif (!image) {
return;
}
const imgScalars =
image.getPointData() && image.getPointData().getScalars();
Iif (!imgScalars) {
return;
}
const dataType = imgScalars.getDataType();
const numComp = imgScalars.getNumberOfComponents();
const actorProperty = actor.getProperty();
const iType = actorProperty.getInterpolationType();
const iComps = actorProperty.getIndependentComponents();
const numIComps = iComps ? numComp : 1;
const textureHeight = iComps ? 2 * numIComps : 1;
const colorTransferFunc = actorProperty.getRGBTransferFunction();
const cfunToString = computeFnToString(
actorProperty,
colorTransferFunc,
numIComps
);
const cTex =
model._openGLRenderWindow.getGraphicsResourceForObject(colorTransferFunc);
const reBuildC =
!cTex?.vtkObj ||
cTex?.hash !== cfunToString ||
model.colorTextureString !== cfunToString;
if (reBuildC) {
const cWidth = 1024;
const cSize = cWidth * textureHeight * 3;
const cTable = new Uint8ClampedArray(cSize);
if (!model.colorTexture) {
model.colorTexture = vtkOpenGLTexture.newInstance({
resizable: true,
});
model.colorTexture.setOpenGLRenderWindow(model._openGLRenderWindow);
}
// set interpolation on the texture based on property setting
if (iType === InterpolationType.NEAREST) {
model.colorTexture.setMinificationFilter(Filter.NEAREST);
model.colorTexture.setMagnificationFilter(Filter.NEAREST);
} else {
model.colorTexture.setMinificationFilter(Filter.LINEAR);
model.colorTexture.setMagnificationFilter(Filter.LINEAR);
}
if (colorTransferFunc) {
const tmpTable = new Float32Array(cWidth * 3);
for (let c = 0; c < numIComps; c++) {
const cfun = actorProperty.getRGBTransferFunction(c);
const cRange = cfun.getRange();
cfun.getTable(cRange[0], cRange[1], cWidth, tmpTable, 1);
Iif (iComps) {
for (let i = 0; i < cWidth * 3; i++) {
cTable[c * cWidth * 6 + i] = 255.0 * tmpTable[i];
cTable[c * cWidth * 6 + i + cWidth * 3] = 255.0 * tmpTable[i];
}
} else {
for (let i = 0; i < cWidth * 3; i++) {
cTable[c * cWidth * 6 + i] = 255.0 * tmpTable[i];
}
}
}
model.colorTexture.releaseGraphicsResources(model._openGLRenderWindow);
model.colorTexture.resetFormatAndType();
model.colorTexture.create2DFromRaw(
cWidth,
textureHeight,
3,
VtkDataTypes.UNSIGNED_CHAR,
cTable
);
} else {
for (let i = 0; i < cWidth * 3; ++i) {
cTable[i] = (255.0 * i) / ((cWidth - 1) * 3);
cTable[i + 1] = (255.0 * i) / ((cWidth - 1) * 3);
cTable[i + 2] = (255.0 * i) / ((cWidth - 1) * 3);
}
model.colorTexture.create2DFromRaw(
cWidth,
1,
3,
VtkDataTypes.UNSIGNED_CHAR,
cTable
);
}
model.colorTextureString = cfunToString;
if (colorTransferFunc) {
model._openGLRenderWindow.setGraphicsResourceForObject(
colorTransferFunc,
model.colorTexture,
model.colorTextureString
);
}
} else E{
model.colorTexture = cTex.vtkObj;
model.colorTextureString = cTex.hash;
}
// Build piecewise function buffer. This buffer is used either
// for component weighting or opacity, depending on whether we're
// rendering components independently or not.
const pwFunc = actorProperty.getPiecewiseFunction();
const pwfunToString = computeFnToString(actorProperty, pwFunc, numIComps);
const pwfTex =
model._openGLRenderWindow.getGraphicsResourceForObject(pwFunc);
// rebuild opacity tfun?
const reBuildPwf =
!pwfTex?.vtkObj ||
pwfTex?.hash !== pwfunToString ||
model.pwfTextureString !== pwfunToString;
if (reBuildPwf) {
const pwfWidth = 1024;
const pwfSize = pwfWidth * textureHeight;
const pwfTable = new Uint8ClampedArray(pwfSize);
if (!model.pwfTexture) {
model.pwfTexture = vtkOpenGLTexture.newInstance({
resizable: true,
});
model.pwfTexture.setOpenGLRenderWindow(model._openGLRenderWindow);
}
// set interpolation on the texture based on property setting
if (iType === InterpolationType.NEAREST) {
model.pwfTexture.setMinificationFilter(Filter.NEAREST);
model.pwfTexture.setMagnificationFilter(Filter.NEAREST);
} else {
model.pwfTexture.setMinificationFilter(Filter.LINEAR);
model.pwfTexture.setMagnificationFilter(Filter.LINEAR);
}
if (pwFunc) {
const pwfFloatTable = new Float32Array(pwfSize);
const tmpTable = new Float32Array(pwfWidth);
for (let c = 0; c < numIComps; ++c) {
const pwfun = actorProperty.getPiecewiseFunction(c);
Iif (pwfun === null) {
// Piecewise constant max if no function supplied for this component
pwfFloatTable.fill(1.0);
} else {
const pwfRange = pwfun.getRange();
pwfun.getTable(pwfRange[0], pwfRange[1], pwfWidth, tmpTable, 1);
// adjust for sample distance etc
Iif (iComps) {
for (let i = 0; i < pwfWidth; i++) {
pwfFloatTable[c * pwfWidth * 2 + i] = tmpTable[i];
pwfFloatTable[c * pwfWidth * 2 + i + pwfWidth] = tmpTable[i];
}
} else {
for (let i = 0; i < pwfWidth; i++) {
pwfFloatTable[c * pwfWidth * 2 + i] = tmpTable[i];
}
}
}
}
model.pwfTexture.releaseGraphicsResources(model._openGLRenderWindow);
model.pwfTexture.resetFormatAndType();
model.pwfTexture.create2DFromRaw(
pwfWidth,
textureHeight,
1,
VtkDataTypes.FLOAT,
pwfFloatTable
);
} else {
// default is opaque
pwfTable.fill(255.0);
model.pwfTexture.create2DFromRaw(
pwfWidth,
1,
1,
VtkDataTypes.UNSIGNED_CHAR,
pwfTable
);
}
model.pwfTextureString = pwfunToString;
if (pwFunc) {
model._openGLRenderWindow.setGraphicsResourceForObject(
pwFunc,
model.pwfTexture,
model.pwfTextureString
);
}
} else E{
model.pwfTexture = pwfTex.vtkObj;
model.pwfTextureString = pwfTex.hash;
}
// Build outline thickness buffer
publicAPI.updatelabelOutlineThicknessTexture(actor);
// Find what IJK axis and what direction to slice along
const { ijkMode } = model.renderable.getClosestIJKAxis();
// Find the IJK slice
let slice = model.renderable.getSlice();
if (ijkMode !== model.renderable.getSlicingMode()) {
// If not IJK slicing, get the IJK slice from the XYZ position/slice
slice = model.renderable.getSliceAtPosition(slice);
}
// Use sub-Slice number/offset if mapper being used is vtkImageArrayMapper,
// since this mapper uses a collection of vtkImageData (and not just a single vtkImageData).
const nSlice = model.renderable.isA('vtkImageArrayMapper')
? model.renderable.getSubSlice() // get subSlice of the current (possibly multi-frame) image
: Math.round(slice);
// Find sliceOffset
const ext = image.getExtent();
let sliceOffset;
if (ijkMode === SlicingMode.I) {
sliceOffset = nSlice - ext[0];
}
Iif (ijkMode === SlicingMode.J) {
sliceOffset = nSlice - ext[2];
}
if (ijkMode === SlicingMode.K || ijkMode === SlicingMode.NONE) {
sliceOffset = nSlice - ext[4];
}
// rebuild the VBO if the data has changed
const toString = `${slice}A${image.getMTime()}A${imgScalars.getMTime()}B${publicAPI.getMTime()}C${model.renderable.getSlicingMode()}D${actor
.getProperty()
.getInterpolationType()}`;
if (model.VBOBuildString !== toString) {
// Build the VBOs
const dims = image.getDimensions();
if (!model.openGLTexture) {
model.openGLTexture = vtkOpenGLTexture.newInstance({
resizable: true,
});
model.openGLTexture.setOpenGLRenderWindow(model._openGLRenderWindow);
}
// Use norm16 for scalar texture if the extension is available
model.openGLTexture.setOglNorm16Ext(
model.context.getExtension('EXT_texture_norm16')
);
if (iType === InterpolationType.NEAREST) {
if (
new Set([1, 3, 4]).has(numComp) &&
dataType === VtkDataTypes.UNSIGNED_CHAR &&
!iComps
) {
model.openGLTexture.setGenerateMipmap(true);
model.openGLTexture.setMinificationFilter(Filter.NEAREST);
} else {
model.openGLTexture.setMinificationFilter(Filter.NEAREST);
}
model.openGLTexture.setMagnificationFilter(Filter.NEAREST);
} else {
Iif (
numComp === 4 &&
dataType === VtkDataTypes.UNSIGNED_CHAR &&
!iComps
) {
model.openGLTexture.setGenerateMipmap(true);
model.openGLTexture.setMinificationFilter(
Filter.LINEAR_MIPMAP_LINEAR
);
} else {
model.openGLTexture.setMinificationFilter(Filter.LINEAR);
}
model.openGLTexture.setMagnificationFilter(Filter.LINEAR);
}
model.openGLTexture.setWrapS(Wrap.CLAMP_TO_EDGE);
model.openGLTexture.setWrapT(Wrap.CLAMP_TO_EDGE);
const sliceSize = dims[0] * dims[1] * numComp;
const ptsArray = new Float32Array(12);
const tcoordArray = new Float32Array(8);
for (let i = 0; i < 4; i++) {
tcoordArray[i * 2] = i % 2 ? 1.0 : 0.0;
tcoordArray[i * 2 + 1] = i > 1 ? 1.0 : 0.0;
}
// Determine depth position of the slicing plane in the scene.
// Slicing modes X, Y, and Z use a continuous axis position, whereas
// slicing modes I, J, and K should use discrete positions.
const sliceDepth = [SlicingMode.X, SlicingMode.Y, SlicingMode.Z].includes(
model.renderable.getSlicingMode()
)
? slice
: nSlice;
const spatialExt = image.getSpatialExtent();
const basicScalars = imgScalars.getData();
let scalars = null;
// Get right scalars according to slicing mode
if (ijkMode === SlicingMode.I) {
scalars = new basicScalars.constructor(dims[2] * dims[1] * numComp);
let id = 0;
for (let k = 0; k < dims[2]; k++) {
for (let j = 0; j < dims[1]; j++) {
let bsIdx =
(sliceOffset + j * dims[0] + k * dims[0] * dims[1]) * numComp;
id = (k * dims[1] + j) * numComp;
const end = bsIdx + numComp;
while (bsIdx < end) {
scalars[id++] = basicScalars[bsIdx++];
}
}
}
dims[0] = dims[1];
dims[1] = dims[2];
ptsArray[0] = sliceDepth;
ptsArray[1] = spatialExt[2];
ptsArray[2] = spatialExt[4];
ptsArray[3] = sliceDepth;
ptsArray[4] = spatialExt[3];
ptsArray[5] = spatialExt[4];
ptsArray[6] = sliceDepth;
ptsArray[7] = spatialExt[2];
ptsArray[8] = spatialExt[5];
ptsArray[9] = sliceDepth;
ptsArray[10] = spatialExt[3];
ptsArray[11] = spatialExt[5];
} else Iif (ijkMode === SlicingMode.J) {
scalars = new basicScalars.constructor(dims[2] * dims[0] * numComp);
let id = 0;
for (let k = 0; k < dims[2]; k++) {
for (let i = 0; i < dims[0]; i++) {
let bsIdx =
(i + sliceOffset * dims[0] + k * dims[0] * dims[1]) * numComp;
id = (k * dims[0] + i) * numComp;
const end = bsIdx + numComp;
while (bsIdx < end) {
scalars[id++] = basicScalars[bsIdx++];
}
}
}
dims[1] = dims[2];
ptsArray[0] = spatialExt[0];
ptsArray[1] = sliceDepth;
ptsArray[2] = spatialExt[4];
ptsArray[3] = spatialExt[1];
ptsArray[4] = sliceDepth;
ptsArray[5] = spatialExt[4];
ptsArray[6] = spatialExt[0];
ptsArray[7] = sliceDepth;
ptsArray[8] = spatialExt[5];
ptsArray[9] = spatialExt[1];
ptsArray[10] = sliceDepth;
ptsArray[11] = spatialExt[5];
} else if (ijkMode === SlicingMode.K || ijkMode === SlicingMode.NONE) {
scalars = basicScalars.subarray(
sliceOffset * sliceSize,
(sliceOffset + 1) * sliceSize
);
ptsArray[0] = spatialExt[0];
ptsArray[1] = spatialExt[2];
ptsArray[2] = sliceDepth;
ptsArray[3] = spatialExt[1];
ptsArray[4] = spatialExt[2];
ptsArray[5] = sliceDepth;
ptsArray[6] = spatialExt[0];
ptsArray[7] = spatialExt[3];
ptsArray[8] = sliceDepth;
ptsArray[9] = spatialExt[1];
ptsArray[10] = spatialExt[3];
ptsArray[11] = sliceDepth;
} else E{
vtkErrorMacro('Reformat slicing not yet supported.');
}
const tex =
model._openGLRenderWindow.getGraphicsResourceForObject(scalars);
if (!tex?.vtkObj) {
if (model._scalars !== scalars) {
model._openGLRenderWindow.releaseGraphicsResourcesForObject(
model._scalars
);
model._scalars = scalars;
}
model.openGLTexture.resetFormatAndType();
model.openGLTexture.create2DFilterableFromRaw(
dims[0],
dims[1],
numComp,
imgScalars.getDataType(),
scalars,
model.renderable.getPreferSizeOverAccuracy?.()
);
model._openGLRenderWindow.setGraphicsResourceForObject(
scalars,
model.openGLTexture,
model.VBOBuildString
);
} else E{
model.openGLTexture = tex.vtkObj;
model.VBOBuildString = tex.hash;
}
model.openGLTexture.activate();
model.openGLTexture.sendParameters();
model.openGLTexture.deactivate();
const points = vtkDataArray.newInstance({
numberOfComponents: 3,
values: ptsArray,
});
points.setName('points');
const tcoords = vtkDataArray.newInstance({
numberOfComponents: 2,
values: tcoordArray,
});
tcoords.setName('tcoords');
const cellArray = new Uint16Array(8);
cellArray[0] = 3;
cellArray[1] = 0;
cellArray[2] = 1;
cellArray[3] = 3;
cellArray[4] = 3;
cellArray[5] = 0;
cellArray[6] = 3;
cellArray[7] = 2;
const cells = vtkDataArray.newInstance({
numberOfComponents: 1,
values: cellArray,
});
model.tris.getCABO().createVBO(cells, 'polys', Representation.SURFACE, {
points,
tcoords,
cellOffset: 0,
});
model.VBOBuildTime.modified();
model.VBOBuildString = toString;
}
};
publicAPI.updatelabelOutlineThicknessTexture = (image) => {
if (!model.labelOutlineThicknessTexture) {
model.labelOutlineThicknessTexture = vtkOpenGLTexture.newInstance({
resizable: false,
});
model.labelOutlineThicknessTexture.setOpenGLRenderWindow(
model._openGLRenderWindow
);
}
const labelOutlineThicknessArray = image
.getProperty()
.getLabelOutlineThickness();
const lTex = model._openGLRenderWindow.getGraphicsResourceForObject(
labelOutlineThicknessArray
);
// compute the join of the labelOutlineThicknessArray so that
// we can use it to decide whether to rebuild the labelOutlineThicknessTexture
// or not
const toString = `${labelOutlineThicknessArray.join('-')}`;
const reBuildL =
!lTex?.vtkObj ||
lTex?.hash !== toString ||
model.labelOutlineThicknessTextureString !== toString;
if (reBuildL) {
const lWidth = 1024;
const lHeight = 1;
const lSize = lWidth * lHeight;
const lTable = new Uint8Array(lSize);
// Assuming labelOutlineThicknessArray contains the thickness for each segment
for (let i = 0; i < lWidth; ++i) {
// Retrieve the thickness value for the current segment index.
// If the value is undefined, null, or 0, use the first element's value as a default.
const thickness =
labelOutlineThicknessArray[i] || labelOutlineThicknessArray[0];
lTable[i] = thickness;
}
model.labelOutlineThicknessTexture.releaseGraphicsResources(
model._openGLRenderWindow
);
model.labelOutlineThicknessTexture.resetFormatAndType();
model.labelOutlineThicknessTexture.setMinificationFilter(Filter.NEAREST);
model.labelOutlineThicknessTexture.setMagnificationFilter(Filter.NEAREST);
// Create a 2D texture (acting as 1D) from the raw data
model.labelOutlineThicknessTexture.create2DFromRaw(
lWidth,
lHeight,
1,
VtkDataTypes.UNSIGNED_CHAR,
lTable
);
model.labelOutlineThicknessTextureString = toString;
if (labelOutlineThicknessArray) {
model._openGLRenderWindow.setGraphicsResourceForObject(
labelOutlineThicknessArray,
model.labelOutlineThicknessTexture,
model.labelOutlineThicknessTextureString
);
}
} else E{
model.labelOutlineThicknessTexture = lTex.vtkObj;
model.labelOutlineThicknessTextureString = lTex.hash;
}
};
publicAPI.getRenderTargetSize = () => {
Iif (model._useSmallViewport) {
return [model._smallViewportWidth, model._smallViewportHeight];
}
const { usize, vsize } = model._openGLRenderer.getTiledSizeAndOrigin();
return [usize, vsize];
};
publicAPI.getRenderTargetOffset = () => {
const { lowerLeftU, lowerLeftV } =
model._openGLRenderer.getTiledSizeAndOrigin();
return [lowerLeftU, lowerLeftV];
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
VBOBuildTime: 0,
VBOBuildString: null,
openGLTexture: null,
tris: null,
imagemat: null,
imagematinv: null,
colorTexture: null,
pwfTexture: null,
labelOutlineThicknessTexture: null,
labelOutlineThicknessTextureString: null,
lastHaveSeenDepthRequest: false,
haveSeenDepthRequest: false,
lastTextureComponents: 0,
_scalars: null,
};
// ----------------------------------------------------------------------------
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.tris = vtkHelper.newInstance();
model.imagemat = mat4.identity(new Float64Array(16));
model.imagematinv = mat4.identity(new Float64Array(16));
model.projectionToWorld = mat4.identity(new Float64Array(16));
model.idxToView = mat4.identity(new Float64Array(16));
model.idxNormalMatrix = mat3.identity(new Float64Array(9));
model.modelToView = mat4.identity(new Float64Array(16));
model.projectionToView = mat4.identity(new Float64Array(16));
// Build VTK API
macro.setGet(publicAPI, model, []);
model.VBOBuildTime = {};
macro.obj(model.VBOBuildTime);
// Object methods
vtkOpenGLImageMapper(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkOpenGLImageMapper');
// ----------------------------------------------------------------------------
export default { newInstance, extend };
// Register ourself to OpenGL backend if imported
registerOverride('vtkAbstractImageMapper', newInstance);
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