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import vtkColorTransferFunction from 'vtk.js/Sources/Rendering/Core/ColorTransferFunction';
import vtkPiecewiseFunction from 'vtk.js/Sources/Common/DataModel/PiecewiseFunction';
import Constants from 'vtk.js/Sources/Rendering/Core/VolumeProperty/Constants';
const { InterpolationType, OpacityMode } = Constants;
const { vtkErrorMacro } = macro;
const VTK_MAX_VRCOMP = 4;
// ----------------------------------------------------------------------------
// vtkVolumeProperty methods
// ----------------------------------------------------------------------------
function vtkVolumeProperty(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkVolumeProperty');
publicAPI.getMTime = () => {
let mTime = model.mtime;
let time;
for (let index = 0; index < VTK_MAX_VRCOMP; index++) {
// Color MTimes
if (model.componentData[index].colorChannels === 1) {
Iif (model.componentData[index].grayTransferFunction) {
// time that Gray transfer function was last modified
time = model.componentData[index].grayTransferFunction.getMTime();
mTime = mTime > time ? mTime : time;
}
} else if (model.componentData[index].colorChannels === 3) {
if (model.componentData[index].rGBTransferFunction) {
// time that RGB transfer function was last modified
time = model.componentData[index].rGBTransferFunction.getMTime();
mTime = mTime > time ? mTime : time;
}
}
// Opacity MTimes
if (model.componentData[index].scalarOpacity) {
// time that Scalar opacity transfer function was last modified
time = model.componentData[index].scalarOpacity.getMTime();
mTime = mTime > time ? mTime : time;
}
Iif (model.componentData[index].gradientOpacity) {
if (!model.componentData[index].disableGradientOpacity) {
// time that Gradient opacity transfer function was last modified
time = model.componentData[index].gradientOpacity.getMTime();
mTime = mTime > time ? mTime : time;
}
}
}
return mTime;
};
publicAPI.getColorChannels = (index) => {
if (index < 0 || index > 3) {
vtkErrorMacro('Bad index - must be between 0 and 3');
return 0;
}
return model.componentData[index].colorChannels;
};
// Set the color of a volume to a gray transfer function
publicAPI.setGrayTransferFunction = (index = 0, func = null) => {
let modified = false;
if (model.componentData[index].grayTransferFunction !== func) {
model.componentData[index].grayTransferFunction = func;
modified = true;
}
if (model.componentData[index].colorChannels !== 1) {
model.componentData[index].colorChannels = 1;
modified = true;
}
if (modified) {
publicAPI.modified();
}
return modified;
};
// Get the currently set gray transfer function. Create one if none set.
publicAPI.getGrayTransferFunction = (index = 0) => {
if (model.componentData[index].grayTransferFunction === null) {
model.componentData[index].grayTransferFunction =
vtkPiecewiseFunction.newInstance();
model.componentData[index].grayTransferFunction.addPoint(0, 0.0);
model.componentData[index].grayTransferFunction.addPoint(1024, 1.0);
if (model.componentData[index].colorChannels !== 1) {
model.componentData[index].colorChannels = 1;
}
publicAPI.modified();
}
return model.componentData[index].grayTransferFunction;
};
// Set the color of a volume to an RGB transfer function
publicAPI.setRGBTransferFunction = (index = 0, func = null) => {
let modified = false;
if (model.componentData[index].rGBTransferFunction !== func) {
model.componentData[index].rGBTransferFunction = func;
modified = true;
}
if (model.componentData[index].colorChannels !== 3) {
model.componentData[index].colorChannels = 3;
modified = true;
}
if (modified) {
publicAPI.modified();
}
return modified;
};
// Get the currently set RGB transfer function. Create one if none set.
publicAPI.getRGBTransferFunction = (index = 0) => {
Iif (model.componentData[index].rGBTransferFunction === null) {
model.componentData[index].rGBTransferFunction =
vtkColorTransferFunction.newInstance();
model.componentData[index].rGBTransferFunction.addRGBPoint(
0,
0.0,
0.0,
0.0
);
model.componentData[index].rGBTransferFunction.addRGBPoint(
1024,
1.0,
1.0,
1.0
);
if (model.componentData[index].colorChannels !== 3) {
model.componentData[index].colorChannels = 3;
}
publicAPI.modified();
}
return model.componentData[index].rGBTransferFunction;
};
// Set the scalar opacity of a volume to a transfer function
publicAPI.setScalarOpacity = (index = 0, func = null) => {
if (model.componentData[index].scalarOpacity !== func) {
model.componentData[index].scalarOpacity = func;
publicAPI.modified();
return true;
}
return false;
};
// Get the scalar opacity transfer function. Create one if none set.
publicAPI.getScalarOpacity = (index = 0) => {
if (model.componentData[index].scalarOpacity === null) {
model.componentData[index].scalarOpacity =
vtkPiecewiseFunction.newInstance();
model.componentData[index].scalarOpacity.addPoint(0, 1.0);
model.componentData[index].scalarOpacity.addPoint(1024, 1.0);
publicAPI.modified();
}
return model.componentData[index].scalarOpacity;
};
publicAPI.setComponentWeight = (index = 0, value = 1) => {
Iif (index < 0 || index >= VTK_MAX_VRCOMP) {
vtkErrorMacro('Invalid index');
return false;
}
const val = Math.min(1, Math.max(0, value));
if (model.componentData[index].componentWeight !== val) {
model.componentData[index].componentWeight = val;
publicAPI.modified();
return true;
}
return false;
};
publicAPI.getComponentWeight = (index = 0) => {
Iif (index < 0 || index >= VTK_MAX_VRCOMP) {
vtkErrorMacro('Invalid index');
return 0.0;
}
return model.componentData[index].componentWeight;
};
publicAPI.setInterpolationTypeToNearest = () =>
publicAPI.setInterpolationType(InterpolationType.NEAREST);
publicAPI.setInterpolationTypeToLinear = () =>
publicAPI.setInterpolationType(InterpolationType.LINEAR);
publicAPI.setInterpolationTypeToFastLinear = () =>
publicAPI.setInterpolationType(InterpolationType.FAST_LINEAR);
publicAPI.getInterpolationTypeAsString = () =>
macro.enumToString(InterpolationType, model.interpolationType);
const sets = [
'useGradientOpacity',
'scalarOpacityUnitDistance',
'gradientOpacityMinimumValue',
'gradientOpacityMinimumOpacity',
'gradientOpacityMaximumValue',
'gradientOpacityMaximumOpacity',
'opacityMode',
'forceNearestInterpolation',
];
sets.forEach((val) => {
const cap = macro.capitalize(val);
publicAPI[`set${cap}`] = (index, value) => {
if (model.componentData[index][`${val}`] !== value) {
model.componentData[index][`${val}`] = value;
publicAPI.modified();
return true;
}
return false;
};
});
const gets = [
'useGradientOpacity',
'scalarOpacityUnitDistance',
'gradientOpacityMinimumValue',
'gradientOpacityMinimumOpacity',
'gradientOpacityMaximumValue',
'gradientOpacityMaximumOpacity',
'opacityMode',
'forceNearestInterpolation',
];
gets.forEach((val) => {
const cap = macro.capitalize(val);
publicAPI[`get${cap}`] = (index) => model.componentData[index][`${val}`];
});
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
colorMixPreset: null,
independentComponents: true,
interpolationType: InterpolationType.FAST_LINEAR,
shade: false,
ambient: 0.1,
diffuse: 0.7,
specular: 0.2,
specularPower: 10.0,
useLabelOutline: false,
labelOutlineThickness: [1],
labelOutlineOpacity: 1.0,
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Build VTK API
macro.obj(publicAPI, model);
if (!model.componentData) {
model.componentData = [];
for (let i = 0; i < VTK_MAX_VRCOMP; ++i) {
model.componentData.push({
colorChannels: 1,
grayTransferFunction: null,
rGBTransferFunction: null,
scalarOpacity: null,
scalarOpacityUnitDistance: 1.0,
opacityMode: OpacityMode.FRACTIONAL,
gradientOpacityMinimumValue: 0,
gradientOpacityMinimumOpacity: 0.0,
gradientOpacityMaximumValue: 1.0,
gradientOpacityMaximumOpacity: 1.0,
useGradientOpacity: false,
componentWeight: 1.0,
forceNearestInterpolation: false,
});
}
}
macro.setGet(publicAPI, model, [
'colorMixPreset',
'independentComponents',
'interpolationType',
'shade',
'ambient',
'diffuse',
'specular',
'specularPower',
'useLabelOutline',
'labelOutlineOpacity',
]);
macro.setGetArray(publicAPI, model, ['labelOutlineThickness']);
// Object methods
vtkVolumeProperty(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkVolumeProperty');
// ----------------------------------------------------------------------------
export default { newInstance, extend, ...Constants };
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