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import vtkAbstractMapper3D from 'vtk.js/Sources/Rendering/Core/AbstractMapper3D';
import vtkDataArray from 'vtk.js/Sources/Common/Core/DataArray';
import vtkImageData from 'vtk.js/Sources/Common/DataModel/ImageData';
import vtkLookupTable from 'vtk.js/Sources/Common/Core/LookupTable';
import * as vtkMath from 'vtk.js/Sources/Common/Core/Math';
import vtkScalarsToColors from 'vtk.js/Sources/Common/Core/ScalarsToColors/Constants'; // Need to go inside Constants otherwise dependency loop
import CoincidentTopologyHelper from 'vtk.js/Sources/Rendering/Core/Mapper/CoincidentTopologyHelper';
import Constants from 'vtk.js/Sources/Rendering/Core/Mapper/Constants';
import vtkDataSet from 'vtk.js/Sources/Common/DataModel/DataSet';
import { PassTypes } from 'vtk.js/Sources/Rendering/OpenGL/HardwareSelector/Constants';
const { FieldAssociations } = vtkDataSet;
const { staticOffsetAPI, otherStaticMethods } = CoincidentTopologyHelper;
const { ColorMode, ScalarMode, GetArray } = Constants;
const { VectorMode } = vtkScalarsToColors;
const { VtkDataTypes } = vtkDataArray;
// ----------------------------------------------------------------------------
function notImplemented(method) {
return () => macro.vtkErrorMacro(`vtkMapper::${method} - NOT IMPLEMENTED`);
}
/**
* Increase by one the 3D coordinates
* It will follow a zigzag pattern so that each coordinate is the neighbor of the next coordinate
* This enables interpolation between two texels without issues
* Note: texture coordinates can't be interpolated using this pattern
* @param {vec3} coordinates The 3D coordinates using integers for each coorinate
* @param {vec3} dimensions The 3D dimensions of the volume
*/
function updateZigzaggingCoordinates(coordinates, dimensions) {
const directionX = coordinates[1] % 2 === 0 ? 1 : -1;
coordinates[0] += directionX;
if (coordinates[0] >= dimensions[0] || coordinates[0] < 0) {
const directionY = coordinates[2] % 2 === 0 ? 1 : -1;
coordinates[0] -= directionX;
coordinates[1] += directionY;
Iif (coordinates[1] >= dimensions[1] || coordinates[1] < 0) {
coordinates[1] -= directionY;
coordinates[2]++;
}
}
}
/**
* Returns the index in the array representing the volume from a 3D coordinate
* @param {vec3} coordinates The 3D integer coordinates
* @param {vec3} dimensions The 3D dimensions of the volume
* @returns The index in a flat array representing the volume
*/
function getIndexFromCoordinates(coordinates, dimensions) {
return (
coordinates[0] +
dimensions[0] * (coordinates[1] + dimensions[1] * coordinates[2])
);
}
/**
* Write texture coordinates for the given `texelIndexPosition` in `textureCoordinate`.
* The `texelIndexPosition` is a floating point number that represents the distance in index space
* from the center of the first texel to the final output position.
* The output is given in texture coordinates and not in index coordinates (this is done at the very end of the function)
* @param {vec3} textureCoordinate The output texture coordinates (to avoid allocating a new Array)
* @param {Number} texelIndexPosition The floating point distance from the center of the first texel, following a zigzag pattern
* @param {vec3} dimensions The 3D dimensions of the volume
*/
function getZigZagTextureCoordinatesFromTexelPosition(
textureCoordinate,
texelIndexPosition,
dimensions
) {
// First compute the integer textureCoordinate
const intTexelIndex = Math.floor(texelIndexPosition);
const xCoordBeforeWrap = intTexelIndex % (2 * dimensions[0]);
let xDirection;
let xEndFlag;
if (xCoordBeforeWrap < dimensions[0]) {
textureCoordinate[0] = xCoordBeforeWrap;
xDirection = 1;
xEndFlag = textureCoordinate[0] === dimensions[0] - 1;
} else {
textureCoordinate[0] = 2 * dimensions[0] - 1 - xCoordBeforeWrap;
xDirection = -1;
xEndFlag = textureCoordinate[0] === 0;
}
const intRowIndex = Math.floor(intTexelIndex / dimensions[0]);
const yCoordBeforeWrap = intRowIndex % (2 * dimensions[1]);
let yDirection;
let yEndFlag;
if (yCoordBeforeWrap < dimensions[1]) {
textureCoordinate[1] = yCoordBeforeWrap;
yDirection = 1;
yEndFlag = textureCoordinate[1] === dimensions[1] - 1;
} else E{
textureCoordinate[1] = 2 * dimensions[1] - 1 - yCoordBeforeWrap;
yDirection = -1;
yEndFlag = textureCoordinate[1] === 0;
}
textureCoordinate[2] = Math.floor(intRowIndex / dimensions[1]);
// Now add the remainder either in x, y or z
const remainder = texelIndexPosition - intTexelIndex;
if (xEndFlag) {
if (yEndFlag) {
textureCoordinate[2] += remainder;
} else {
textureCoordinate[1] += yDirection * remainder;
}
} else {
textureCoordinate[0] += xDirection * remainder;
}
// textureCoordinates are in index space, convert to texture space
textureCoordinate[0] = (textureCoordinate[0] + 0.5) / dimensions[0];
textureCoordinate[1] = (textureCoordinate[1] + 0.5) / dimensions[1];
textureCoordinate[2] = (textureCoordinate[2] + 0.5) / dimensions[2];
}
// Associate an input vtkDataArray to an object { stringHash, textureCoordinates }
// A single dataArray only caches one array of texture coordinates, so this cache is useless when
// the input data array is used with two different lookup tables (which is very unlikely)
const colorTextureCoordinatesCache = new WeakMap();
/**
* The minimum of the range is mapped to the center of the first texel excluding min texel (texel at index distance 1)
* The maximum of the range is mapped to the center of the last texel excluding max and NaN texels (texel at index distance numberOfColorsInRange)
* The result is cached, and is reused if the arguments are the same and the input doesn't change
* @param {vtkDataArray} input The input data array used for coloring
* @param {Number} component The component of the input data array that is used for coloring (-1 for magnitude of the vectors)
* @param {Range} range The range of the scalars
* @param {Number} numberOfColorsInRange The number of colors that are used in the range
* @param {vec3} dimensions The dimensions of the texture
* @param {boolean} useLogScale If log scale should be used to transform input scalars
* @param {boolean} useZigzagPattern If a zigzag pattern should be used. Otherwise 1 row for colors (including min and max) and 1 row for NaN are used.
* @returns A vtkDataArray containing the texture coordinates (2D or 3D)
*/
function getOrCreateColorTextureCoordinates(
input,
component,
range,
numberOfColorsInRange,
dimensions,
useLogScale,
useZigzagPattern
) {
// Caching using the "arguments" special object (because it is a pure function)
const argStrings = new Array(arguments.length);
for (let argIndex = 0; argIndex < arguments.length; ++argIndex) {
// eslint-disable-next-line prefer-rest-params
const arg = arguments[argIndex];
argStrings[argIndex] = arg.getMTime?.() ?? arg;
}
const stringHash = argStrings.join('/');
const cachedResult = colorTextureCoordinatesCache.get(input);
Iif (cachedResult && cachedResult.stringHash === stringHash) {
return cachedResult.textureCoordinates;
}
// The range used for computing coordinates have to change
// slightly to accommodate the special above- and below-range
// colors that are the first and last texels, respectively.
const scalarTexelWidth = (range[1] - range[0]) / (numberOfColorsInRange - 1);
const [paddedRangeMin, paddedRangeMax] = [
range[0] - scalarTexelWidth,
range[1] + scalarTexelWidth,
];
// Use the center of the voxel
const textureSOrigin = paddedRangeMin - 0.5 * scalarTexelWidth;
const textureSCoeff =
1.0 / (paddedRangeMax - paddedRangeMin + scalarTexelWidth);
// Compute in index space first
const texelIndexOrigin = paddedRangeMin;
const texelIndexCoeff =
(numberOfColorsInRange + 1) / (paddedRangeMax - paddedRangeMin);
const inputV = input.getData();
const numScalars = input.getNumberOfTuples();
const numComps = input.getNumberOfComponents();
const useMagnitude = component < 0 || component >= numComps;
const numberOfOutputComponents = dimensions[2] <= 1 ? 2 : 3;
const output = vtkDataArray.newInstance({
numberOfComponents: numberOfOutputComponents,
values: new Float32Array(numScalars * numberOfOutputComponents),
});
const outputV = output.getData();
const nanTextureCoordinate = [0, 0, 0];
// Distance of NaN from the beginning:
// min: 0, ...colorsInRange, max: numberOfColorsInRange + 1, NaN = numberOfColorsInRange + 2
getZigZagTextureCoordinatesFromTexelPosition(
nanTextureCoordinate,
numberOfColorsInRange + 2,
dimensions
);
// Set a texture coordinate in the output for each tuple in the input
let inputIdx = 0;
let outputIdx = 0;
const textureCoordinate = [0.5, 0.5, 0.5];
for (let scalarIdx = 0; scalarIdx < numScalars; ++scalarIdx) {
// Get scalar value from magnitude or a single component
let scalarValue;
Iif (useMagnitude) {
let sum = 0;
for (let compIdx = 0; compIdx < numComps; ++compIdx) {
const compValue = inputV[inputIdx + compIdx];
sum += compValue * compValue;
}
scalarValue = Math.sqrt(sum);
} else {
scalarValue = inputV[inputIdx + component];
}
inputIdx += numComps;
// Apply log scale if necessary
Iif (useLogScale) {
scalarValue = vtkLookupTable.applyLogScale(scalarValue, range, range);
}
// Convert to texture coordinates and update output
if (vtkMath.isNan(scalarValue)) {
// Last texels are NaN colors (there is at least one NaN color)
textureCoordinate[0] = nanTextureCoordinate[0];
textureCoordinate[1] = nanTextureCoordinate[1];
textureCoordinate[2] = nanTextureCoordinate[2];
} else if (useZigzagPattern) {
// Texel position is in [0, numberOfColorsInRange + 1]
let texelIndexPosition =
(scalarValue - texelIndexOrigin) * texelIndexCoeff;
if (texelIndexPosition < 1) {
// Use min color when smaller than range
texelIndexPosition = 0;
} else if (texelIndexPosition > numberOfColorsInRange) {
// Use max color when greater than range
texelIndexPosition = numberOfColorsInRange + 1;
}
// Convert the texel position into texture coordinate following a zigzag pattern
getZigZagTextureCoordinatesFromTexelPosition(
textureCoordinate,
texelIndexPosition,
dimensions
);
} else {
// 0.0 in t coordinate means not NaN. So why am I setting it to 0.49?
// Because when you are mapping scalars and you have a NaN adjacent to
// anything else, the interpolation everywhere should be NaN. Thus, I
// want the NaN color everywhere except right on the non-NaN neighbors.
// To simulate this, I set the t coord for the real numbers close to
// the threshold so that the interpolation almost immediately looks up
// the NaN value.
textureCoordinate[1] = 0.49;
// Some implementations apparently don't handle relatively large
// numbers (compared to the range [0.0, 1.0]) very well. In fact,
// values above 1122.0f appear to cause texture wrap-around on
// some systems even when edge clamping is enabled. Why 1122.0f? I
// don't know. For safety, we'll clamp at +/- 1000. This will
// result in incorrect images when the texture value should be
// above or below 1000, but I don't have a better solution.
const textureS = (scalarValue - textureSOrigin) * textureSCoeff;
Iif (textureS > 1000.0) {
textureCoordinate[0] = 1000.0;
} else Iif (textureS < -1000.0) {
textureCoordinate[0] = -1000.0;
} else {
textureCoordinate[0] = textureS;
}
}
for (let i = 0; i < numberOfOutputComponents; ++i) {
outputV[outputIdx++] = textureCoordinate[i];
}
}
colorTextureCoordinatesCache.set(input, {
stringHash,
textureCoordinates: output,
});
return output;
}
// ----------------------------------------------------------------------------
// vtkMapper methods
// ----------------------------------------------------------------------------
function vtkMapper(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkMapper');
publicAPI.getBounds = () => {
const input = publicAPI.getInputData();
Iif (!input) {
model.bounds = vtkMath.createUninitializedBounds();
} else {
if (!model.static) {
publicAPI.update();
}
model.bounds = input.getBounds();
}
return model.bounds;
};
publicAPI.setForceCompileOnly = (v) => {
model.forceCompileOnly = v;
// make sure we do NOT call modified()
};
publicAPI.setSelectionWebGLIdsToVTKIds = (selectionWebGLIdsToVTKIds) => {
model.selectionWebGLIdsToVTKIds = selectionWebGLIdsToVTKIds;
// make sure we do NOT call modified()
// this attribute is only used when processing a selection made with the hardware selector
// the mtime of the mapper doesn't need to be changed
};
publicAPI.createDefaultLookupTable = () => {
model.lookupTable = vtkLookupTable.newInstance();
};
publicAPI.getColorModeAsString = () =>
macro.enumToString(ColorMode, model.colorMode);
publicAPI.setColorModeToDefault = () => publicAPI.setColorMode(0);
publicAPI.setColorModeToMapScalars = () => publicAPI.setColorMode(1);
publicAPI.setColorModeToDirectScalars = () => publicAPI.setColorMode(2);
publicAPI.getScalarModeAsString = () =>
macro.enumToString(ScalarMode, model.scalarMode);
publicAPI.setScalarModeToDefault = () => publicAPI.setScalarMode(0);
publicAPI.setScalarModeToUsePointData = () => publicAPI.setScalarMode(1);
publicAPI.setScalarModeToUseCellData = () => publicAPI.setScalarMode(2);
publicAPI.setScalarModeToUsePointFieldData = () => publicAPI.setScalarMode(3);
publicAPI.setScalarModeToUseCellFieldData = () => publicAPI.setScalarMode(4);
publicAPI.setScalarModeToUseFieldData = () => publicAPI.setScalarMode(5);
publicAPI.getAbstractScalars = (
input,
scalarMode,
arrayAccessMode,
arrayId,
arrayName
) => {
// make sure we have an input
if (!input || !model.scalarVisibility) {
return { scalars: null, cellFlag: false };
}
let scalars = null;
let cellFlag = false;
// get and scalar data according to scalar mode
if (scalarMode === ScalarMode.DEFAULT) {
scalars = input.getPointData().getScalars();
if (!scalars) {
scalars = input.getCellData().getScalars();
cellFlag = true;
}
} else Iif (scalarMode === ScalarMode.USE_POINT_DATA) {
scalars = input.getPointData().getScalars();
} else Iif (scalarMode === ScalarMode.USE_CELL_DATA) {
scalars = input.getCellData().getScalars();
cellFlag = true;
} else if (scalarMode === ScalarMode.USE_POINT_FIELD_DATA) {
const pd = input.getPointData();
Iif (arrayAccessMode === GetArray.BY_ID) {
scalars = pd.getArrayByIndex(arrayId);
} else {
scalars = pd.getArrayByName(arrayName);
}
} else if (scalarMode === ScalarMode.USE_CELL_FIELD_DATA) {
const cd = input.getCellData();
cellFlag = true;
Iif (arrayAccessMode === GetArray.BY_ID) {
scalars = cd.getArrayByIndex(arrayId);
} else {
scalars = cd.getArrayByName(arrayName);
}
} else Eif (scalarMode === ScalarMode.USE_FIELD_DATA) {
const fd = input.getFieldData();
if (arrayAccessMode === GetArray.BY_ID) {
scalars = fd.getArrayByIndex(arrayId);
} else {
scalars = fd.getArrayByName(arrayName);
}
}
return { scalars, cellFlag };
};
publicAPI.mapScalars = (input, alpha) => {
const { scalars, cellFlag } = publicAPI.getAbstractScalars(
input,
model.scalarMode,
model.arrayAccessMode,
model.arrayId,
model.colorByArrayName
);
model.areScalarsMappedFromCells = cellFlag;
if (!scalars) {
model.colorCoordinates = null;
model.colorTextureMap = null;
model.colorMapColors = null;
return;
}
// we want to only recompute when something has changed
const toString = `${publicAPI.getMTime()}${scalars.getMTime()}${alpha}`;
Iif (model.colorBuildString === toString) return;
if (!model.useLookupTableScalarRange) {
publicAPI
.getLookupTable()
.setRange(model.scalarRange[0], model.scalarRange[1]);
}
// Decide between texture color or vertex color.
// Cell data always uses vertex color.
// Only point data can use both texture and vertex coloring.
if (publicAPI.canUseTextureMapForColoring(scalars, cellFlag)) {
model.mapScalarsToTexture(scalars, cellFlag, alpha);
} else {
model.colorCoordinates = null;
model.colorTextureMap = null;
const lut = publicAPI.getLookupTable();
if (lut) {
// Ensure that the lookup table is built
lut.build();
model.colorMapColors = lut.mapScalars(
scalars,
model.colorMode,
model.fieldDataTupleId
);
}
}
model.colorBuildString = `${publicAPI.getMTime()}${scalars.getMTime()}${alpha}`;
};
// Protected method
model.mapScalarsToTexture = (scalars, cellFlag, alpha) => {
const range = model.lookupTable.getRange();
const useLogScale = model.lookupTable.usingLogScale();
Iif (useLogScale) {
// convert range to log.
vtkLookupTable.getLogRange(range, range);
}
const origAlpha = model.lookupTable.getAlpha();
// Get rid of vertex color array. Only texture or vertex coloring
// can be active at one time. The existence of the array is the
// signal to use that technique.
model.colorMapColors = null;
// If the lookup table has changed, then recreate the color texture map.
// Set a new lookup table changes this->MTime.
if (
model.colorTextureMap == null ||
publicAPI.getMTime() > model.colorTextureMap.getMTime() ||
model.lookupTable.getMTime() > model.colorTextureMap.getMTime() ||
model.lookupTable.getAlpha() !== alpha
) {
model.lookupTable.setAlpha(alpha);
model.colorTextureMap = null;
// Get the texture map from the lookup table.
// Create a dummy ramp of scalars.
// In the future, we could extend vtkScalarsToColors.
model.lookupTable.build();
const numberOfAvailableColors =
model.lookupTable.getNumberOfAvailableColors();
// Maximum dimensions and number of colors in range
const maxTextureWidthForCells = 2048;
const maxColorsInRangeForCells = maxTextureWidthForCells ** 3 - 3; // 3D but keep a color for min, max and NaN
const maxTextureWidthForPoints = 4096;
const maxColorsInRangeForPoints = maxTextureWidthForPoints - 2; // 1D but keep a color for min and max (NaN is in a different row)
// Minimum number of colors in range (excluding special colors like minColor, maxColor and NaNColor)
const minColorsInRange = 2;
// Maximum number of colors, limited by the maximum possible texture size
const maxColorsInRange = cellFlag
? maxColorsInRangeForCells
: maxColorsInRangeForPoints;
model.numberOfColorsInRange = Math.min(
Math.max(numberOfAvailableColors, minColorsInRange),
maxColorsInRange
);
const numberOfColorsForCells = model.numberOfColorsInRange + 3; // Add min, max and NaN
const numberOfColorsInUpperRowForPoints = model.numberOfColorsInRange + 2; // Add min and max ; the lower row will be used for NaN color
const textureDimensions = cellFlag
? [
Math.min(
Math.ceil(numberOfColorsForCells / maxTextureWidthForCells ** 0),
maxTextureWidthForCells
),
Math.min(
Math.ceil(numberOfColorsForCells / maxTextureWidthForCells ** 1),
maxTextureWidthForCells
),
Math.min(
Math.ceil(numberOfColorsForCells / maxTextureWidthForCells ** 2),
maxTextureWidthForCells
),
]
: [numberOfColorsInUpperRowForPoints, 2, 1];
const textureSize =
textureDimensions[0] * textureDimensions[1] * textureDimensions[2];
const scalarsArray = new Float64Array(textureSize);
// Colors for NaN by default
scalarsArray.fill(NaN);
// Colors in range
// Add 2 to also get color for min and max
const numberOfNonSpecialColors = model.numberOfColorsInRange;
const numberOfNonNaNColors = numberOfNonSpecialColors + 2;
const textureCoordinates = [0, 0, 0];
const rangeMin = range[0];
const rangeDifference = range[1] - range[0];
for (let i = 0; i < numberOfNonNaNColors; ++i) {
const scalarsArrayIndex = getIndexFromCoordinates(
textureCoordinates,
textureDimensions
);
// Minus 1 start at min color
const scalarValue =
rangeMin +
(rangeDifference * (i - 1)) / (numberOfNonSpecialColors - 1);
scalarsArray[scalarsArrayIndex] = useLogScale
? 10.0 ** scalarValue
: scalarValue;
// Colors are zigzagging to allow interpolation between two neighbor colors when coloring cells
updateZigzaggingCoordinates(textureCoordinates, textureDimensions);
}
const scalarsDataArray = vtkDataArray.newInstance({
numberOfComponents: 1,
values: scalarsArray,
});
const colorsDataArray = model.lookupTable.mapScalars(
scalarsDataArray,
model.colorMode,
0
);
model.colorTextureMap = vtkImageData.newInstance();
model.colorTextureMap.setDimensions(textureDimensions);
model.colorTextureMap.getPointData().setScalars(colorsDataArray);
model.lookupTable.setAlpha(origAlpha);
}
// Although I like the feature of applying magnitude to single component
// scalars, it is not how the old MapScalars for vertex coloring works.
const scalarComponent =
model.lookupTable.getVectorMode() === VectorMode.MAGNITUDE &&
scalars.getNumberOfComponents() > 1
? -1
: model.lookupTable.getVectorComponent();
// Create new coordinates if necessary, this function uses cache if possible.
// A zigzag pattern can't be used with point data, as interpolation of texture coordinates will be wrong
// A zigzag pattern can be used with cell data, as there will be no texture coordinates interpolation
// The texture generated using a zigzag pattern in one dimension is the same as without zigzag
// Therefore, the same code can be used for texture generation of point/cell data but not for texture coordinates
model.colorCoordinates = getOrCreateColorTextureCoordinates(
scalars,
scalarComponent,
range,
model.numberOfColorsInRange,
model.colorTextureMap.getDimensions(),
useLogScale,
cellFlag
);
};
publicAPI.getIsOpaque = () => {
const input = publicAPI.getInputData();
const gasResult = publicAPI.getAbstractScalars(
input,
model.scalarMode,
model.arrayAccessMode,
model.arrayId,
model.colorByArrayName
);
const scalars = gasResult.scalars;
if (!model.scalarVisibility || scalars == null) {
// No scalar colors.
return true;
}
const lut = publicAPI.getLookupTable();
if (lut) {
// Ensure that the lookup table is built
lut.build();
return lut.areScalarsOpaque(scalars, model.colorMode, -1);
}
return true;
};
publicAPI.canUseTextureMapForColoring = (scalars, cellFlag) => {
if (cellFlag && !(model.colorMode === ColorMode.DIRECT_SCALARS)) {
return true; // cell data always use textures.
}
if (!model.interpolateScalarsBeforeMapping) {
return false; // user doesn't want us to use texture maps at all.
}
// index color does not use textures
if (model.lookupTable && model.lookupTable.getIndexedLookup()) {
return false;
}
Iif (!scalars) {
// no scalars on this dataset, we don't care if texture is used at all.
return false;
}
Iif (
(model.colorMode === ColorMode.DEFAULT &&
scalars.getDataType() === VtkDataTypes.UNSIGNED_CHAR) ||
model.colorMode === ColorMode.DIRECT_SCALARS
) {
// Don't use texture is direct coloring using RGB unsigned chars is
// requested.
return false;
}
return true;
};
publicAPI.clearColorArrays = () => {
model.colorMapColors = null;
model.colorCoordinates = null;
model.colorTextureMap = null;
};
publicAPI.getLookupTable = () => {
if (!model.lookupTable) {
publicAPI.createDefaultLookupTable();
}
return model.lookupTable;
};
publicAPI.getMTime = () => {
let mt = model.mtime;
if (model.lookupTable !== null) {
const time = model.lookupTable.getMTime();
mt = time > mt ? time : mt;
}
return mt;
};
publicAPI.getPrimitiveCount = () => {
const input = publicAPI.getInputData();
const pcount = {
points: input.getPoints().getNumberOfValues() / 3,
verts:
input.getVerts().getNumberOfValues() -
input.getVerts().getNumberOfCells(),
lines:
input.getLines().getNumberOfValues() -
2 * input.getLines().getNumberOfCells(),
triangles:
input.getPolys().getNumberOfValues() -
3 * input.getPolys().getNumberOfCells(),
};
return pcount;
};
publicAPI.acquireInvertibleLookupTable = notImplemented(
'AcquireInvertibleLookupTable'
);
publicAPI.valueToColor = notImplemented('ValueToColor');
publicAPI.colorToValue = notImplemented('ColorToValue');
publicAPI.useInvertibleColorFor = notImplemented('UseInvertibleColorFor');
publicAPI.clearInvertibleColor = notImplemented('ClearInvertibleColor');
publicAPI.processSelectorPixelBuffers = (selector, pixelOffsets) => {
/* eslint-disable no-bitwise */
Iif (
!selector ||
!model.selectionWebGLIdsToVTKIds ||
!model.populateSelectionSettings
) {
return;
}
const rawLowData = selector.getRawPixelBuffer(PassTypes.ID_LOW24);
const rawHighData = selector.getRawPixelBuffer(PassTypes.ID_HIGH24);
const currentPass = selector.getCurrentPass();
const fieldAssociation = selector.getFieldAssociation();
let idMap = null;
if (fieldAssociation === FieldAssociations.FIELD_ASSOCIATION_POINTS) {
idMap = model.selectionWebGLIdsToVTKIds.points;
} else if (fieldAssociation === FieldAssociations.FIELD_ASSOCIATION_CELLS) {
idMap = model.selectionWebGLIdsToVTKIds.cells;
}
Iif (!idMap) {
return;
}
pixelOffsets.forEach((pos) => {
if (currentPass === PassTypes.ID_LOW24) {
let inValue = 0;
if (rawHighData) {
inValue += rawHighData[pos];
inValue *= 256;
}
inValue += rawLowData[pos + 2];
inValue *= 256;
inValue += rawLowData[pos + 1];
inValue *= 256;
inValue += rawLowData[pos];
const outValue = idMap[inValue];
const lowData = selector.getPixelBuffer(PassTypes.ID_LOW24);
lowData[pos] = outValue & 0xff;
lowData[pos + 1] = (outValue & 0xff00) >> 8;
lowData[pos + 2] = (outValue & 0xff0000) >> 16;
} else if (currentPass === PassTypes.ID_HIGH24 && rawHighData) {
let inValue = 0;
inValue += rawHighData[pos];
inValue *= 256;
inValue += rawLowData[pos + 2];
inValue *= 256;
inValue += rawLowData[pos + 1];
inValue *= 256;
inValue += rawLowData[pos];
const outValue = idMap[inValue];
const highData = selector.getPixelBuffer(PassTypes.ID_HIGH24);
highData[pos] = (outValue & 0xff000000) >> 24;
}
});
/* eslint-enable no-bitwise */
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
colorMapColors: null, // Same as this->Colors
areScalarsMappedFromCells: false,
static: false,
lookupTable: null,
scalarVisibility: true,
scalarRange: [0, 1],
useLookupTableScalarRange: false,
colorMode: 0,
scalarMode: 0,
arrayAccessMode: 1, // By_NAME
renderTime: 0,
colorByArrayName: null,
fieldDataTupleId: -1,
populateSelectionSettings: true,
selectionWebGLIdsToVTKIds: null,
interpolateScalarsBeforeMapping: false,
colorCoordinates: null,
colorTextureMap: null,
numberOfColorsInRange: 0,
forceCompileOnly: 0,
useInvertibleColors: false,
invertibleScalars: null,
customShaderAttributes: [],
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Inheritance
vtkAbstractMapper3D.extend(publicAPI, model, initialValues);
macro.get(publicAPI, model, [
'areScalarsMappedFromCells',
'colorCoordinates',
'colorMapColors',
'colorTextureMap',
'numberOfColorsInRange',
'selectionWebGLIdsToVTKIds',
]);
macro.setGet(publicAPI, model, [
'colorByArrayName',
'arrayAccessMode',
'colorMode',
'fieldDataTupleId',
'interpolateScalarsBeforeMapping',
'lookupTable',
'populateSelectionSettings',
'renderTime',
'scalarMode',
'scalarVisibility',
'static',
'useLookupTableScalarRange',
'customShaderAttributes', // point data array names that will be transferred to the VBO
]);
macro.setGetArray(publicAPI, model, ['scalarRange'], 2);
CoincidentTopologyHelper.implementCoincidentTopologyMethods(publicAPI, model);
// Object methods
vtkMapper(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkMapper');
// ----------------------------------------------------------------------------
export default {
newInstance,
extend,
...staticOffsetAPI,
...otherStaticMethods,
...Constants,
};
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