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@kitware/vtk.js

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Visualization Toolkit for the Web

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import { mat4 } from 'gl-matrix'; import { n as newInstance$1, e as setGet, o as obj, c as macro } from '../../macros2.js'; import vtkHelper from './Helper.js'; import vtkPoints from '../../Common/Core/Points.js'; import { v as vtkPolyData2DFS } from './glsl/vtkPolyData2DFS.glsl.js'; import { v as vtkPolyData2DVS } from './glsl/vtkPolyData2DVS.glsl.js'; import vtkReplacementShaderMapper from './ReplacementShaderMapper.js'; import vtkShaderProgram from './ShaderProgram.js'; import vtkViewNode from '../SceneGraph/ViewNode.js'; import vtkOpenGLTexture from './Texture.js'; import { R as round } from '../../Common/Core/Math/index.js'; import { DisplayLocation } from '../Core/Property2D/Constants.js'; import { registerOverride } from './ViewNodeFactory.js'; // import { mat3, mat4, vec3 } from 'gl-matrix'; const { primTypes } = vtkHelper; const { Filter, Wrap } = vtkOpenGLTexture; const { vtkErrorMacro } = macro; const StartEvent = { type: 'StartEvent' }; const EndEvent = { type: 'EndEvent' }; // ---------------------------------------------------------------------------- // vtkOpenGLPolyDataMapper2D methods // ---------------------------------------------------------------------------- function vtkOpenGLPolyDataMapper2D(publicAPI, model) { // Set our className model.classHierarchy.push('vtkOpenGLPolyDataMapper2D'); publicAPI.buildPass = prepass => { if (prepass) { model.openGLActor2D = publicAPI.getFirstAncestorOfType('vtkOpenGLActor2D'); model._openGLRenderer = model.openGLActor2D.getFirstAncestorOfType('vtkOpenGLRenderer'); model._openGLRenderWindow = model._openGLRenderer.getLastAncestorOfType('vtkOpenGLRenderWindow'); model.openGLCamera = model._openGLRenderer.getViewNodeFor(model._openGLRenderer.getRenderable().getActiveCamera(), model.openGLCamera); } }; publicAPI.overlayPass = prepass => { if (prepass) { publicAPI.render(); } }; publicAPI.getShaderTemplate = (shaders, ren, actor) => { shaders.Vertex = vtkPolyData2DVS; shaders.Fragment = vtkPolyData2DFS; shaders.Geometry = ''; }; 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.openGLActor2D.getRenderable(); const ren = model._openGLRenderer.getRenderable(); publicAPI.renderPiece(ren, actor); }; publicAPI.renderPiece = (ren, actor) => { publicAPI.invokeEvent(StartEvent); if (!model.renderable.getStatic()) { model.renderable.update(); } model.currentInput = model.renderable.getInputData(); publicAPI.invokeEvent(EndEvent); if (!model.currentInput) { vtkErrorMacro('No input!'); return; } // if there are no points then we are done if (!model.currentInput.getPoints || !model.currentInput.getPoints().getNumberOfValues()) { return; } // cull back face to avoid double drawing const gl = model.context; model._openGLRenderWindow.enableCullFace(); gl.cullFace(gl.BACK); publicAPI.renderPieceStart(ren, actor); publicAPI.renderPieceDraw(ren, actor); publicAPI.renderPieceFinish(ren, actor); }; publicAPI.renderPieceStart = (ren, actor) => { model.primitiveIDOffset = 0; if (model._openGLRenderer.getSelector()) { switch (model._openGLRenderer.getSelector().getCurrentPass()) { default: model._openGLRenderer.getSelector().renderProp(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(); } // 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.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 if (cellBO.getShaderSourceTime().getMTime() < model.renderable.getMTime() || cellBO.getShaderSourceTime().getMTime() < model.currentInput.getMTime()) { return true; } return false; }; 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._openGLRenderWindow.getMTime() || vmtime < model.renderable.getMTime() || vmtime < actor.getMTime() || vmtime < model.currentInput.getMTime() || model.renderable.getTransformCoordinate() && vmtime < ren.getMTime()) { return true; } return false; }; publicAPI.buildBufferObjects = (ren, actor) => { const poly = model.currentInput; if (poly === null) { return; } model.renderable.mapScalars(poly, actor.getProperty().getOpacity()); const c = model.renderable.getColorMapColors(); const representation = actor.getProperty().getRepresentation(); let tcoords = poly.getPointData().getTCoords(); if (!model.openGLActor2D.getActiveTextures()) { tcoords = null; } // Flag to check if tcoords are per cell instead of per point let useTCoordsPerCell = false; // handle color mapping via texture if (model.renderable.getColorCoordinates()) { tcoords = model.renderable.getColorCoordinates(); useTCoordsPerCell = model.renderable.getAreScalarsMappedFromCells(); 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({ width: ext[1] - ext[0] + 1, height: ext[3] - ext[2] + 1, numComps: inScalars.getNumberOfComponents(), dataType: inScalars.getDataType(), data: inScalars.getData() }); tex.activate(); tex.sendParameters(); tex.deactivate(); } const transformCoordinate = model.renderable.getTransformCoordinate(); const view = ren.getRenderWindow().getViews()[0]; const vsize = view.getViewportSize(ren); const toString = `${poly.getMTime()}A${representation}B${poly.getMTime()}` + `C${c ? c.getMTime() : 1}` + `D${tcoords ? tcoords.getMTime() : 1}` + `E${transformCoordinate ? ren.getMTime() : 1}` + `F${vsize}`; if (model.VBOBuildString !== toString) { // Build the VBOs let points = poly.getPoints(); if (transformCoordinate) { const p = vtkPoints.newInstance(); const numPts = points.getNumberOfPoints(); p.setNumberOfPoints(numPts); const point = []; for (let i = 0; i < numPts; ++i) { points.getPoint(i, point); transformCoordinate.setValue(point); const v = transformCoordinate.getComputedDoubleViewportValue(ren); p.setPoint(i, v[0], v[1], 0.0); } points = p; } const options = { points, tcoords, colors: c, cellOffset: 0, useTCoordsPerCell, haveCellScalars: model.renderable.getAreScalarsMappedFromCells(), customAttributes: model.renderable.getCustomShaderAttributes().map(arrayName => poly.getPointData().getArrayByName(arrayName)) }; options.cellOffset += model.primitives[primTypes.Points].getCABO().createVBO(poly.getVerts(), 'verts', representation, options); options.cellOffset += model.primitives[primTypes.Lines].getCABO().createVBO(poly.getLines(), 'lines', representation, options); options.cellOffset += model.primitives[primTypes.Tris].getCABO().createVBO(poly.getPolys(), 'polys', representation, options); options.cellOffset += model.primitives[primTypes.TriStrips].getCABO().createVBO(poly.getStrips(), 'strips', representation, options); model.VBOBuildTime.modified(); model.VBOBuildString = toString; } }; publicAPI.renderPieceDraw = (ren, actor) => { const representation = actor.getProperty().getRepresentation(); const gl = model.context; gl.depthMask(true); // for every primitive type for (let i = primTypes.Start; i < primTypes.End; i++) { // if there are entries const cabo = model.primitives[i].getCABO(); if (cabo.getElementCount()) { model.lastBoundBO = model.primitives[i]; model.primitiveIDOffset += model.primitives[i].drawArrays(ren, actor, representation, publicAPI); } } }; publicAPI.renderPieceFinish = (ren, actor) => { if (model.lastBoundBO) { model.lastBoundBO.getVAO().release(); } if (model.renderable.getColorTextureMap()) { model.internalColorTexture.deactivate(); } }; publicAPI.replaceShaderValues = (shaders, ren, actor) => { publicAPI.replaceShaderColor(shaders, ren, actor); publicAPI.replaceShaderTCoord(shaders, ren, actor); publicAPI.replaceShaderPicking(shaders, ren, actor); publicAPI.replaceShaderPositionVC(shaders, ren, actor); }; publicAPI.replaceShaderColor = (shaders, ren, actor) => { let VSSource = shaders.Vertex; let GSSource = shaders.Geometry; let FSSource = shaders.Fragment; // create the color property declarations // these are always defined let colorDec = ['uniform vec3 diffuseColorUniform;', 'uniform float opacityUniform;']; // now handle the more complex fragment shader implementation let colorImpl = ['vec3 diffuseColor = diffuseColorUniform;', 'float opacity = opacityUniform;']; // add scalar vertex colors if (model.lastBoundBO.getCABO().getColorComponents() !== 0) { 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; FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::Color::Impl', colorImpl.concat([' diffuseColor = vertexColorVSOutput.rgb;', ' opacity = opacity*vertexColorVSOutput.a;'])).result; } else if (model.renderable.getAreScalarsMappedFromCells()) { colorImpl = colorImpl.concat([' vec4 texColor = texture2D(texture1, tcoordVCVSOutput.st);', ' diffuseColor = texColor.rgb;', ' opacity = opacity*texColor.a;']); } colorImpl = colorImpl.concat(['gl_FragData[0] = vec4(diffuseColor, opacity);']); FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::Color::Dec', colorDec).result; FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::Color::Impl', colorImpl).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; const tcdim = model.lastBoundBO.getCABO().getTCoordComponents(); if (tcdim === 1) { VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::TCoord::Dec', ['in float tcoordMC;', 'out float tcoordVCVSOutput;']).result; VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::TCoord::Impl', ['tcoordVCVSOutput = tcoordMC;']).result; GSSource = vtkShaderProgram.substitute(GSSource, '//VTK::TCoord::Dec', ['in float tcoordVCVSOutput[];\n', 'out float tcoordVCGSOutput;']).result; GSSource = vtkShaderProgram.substitute(GSSource, ['//VTK::TCoord::Impl', 'tcoordVCGSOutput = tcoordVCVSOutput[i];']).result; FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::TCoord::Dec', ['in float tcoordVCVSOutput;', 'uniform sampler2D texture1;']).result; FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::TCoord::Impl', ['gl_FragData[0] = gl_FragData[0]*texture2D(texture1, vec2(tcoordVCVSOutput,0));']).result; } else if (tcdim === 2) { VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::TCoord::Dec', ['in vec2 tcoordMC;', 'out vec2 tcoordVCVSOutput;']).result; VSSource = vtkShaderProgram.substitute(VSSource, '//VTK::TCoord::Impl', ['tcoordVCVSOutput = tcoordMC;']).result; GSSource = vtkShaderProgram.substitute(GSSource, '//VTK::TCoord::Dec', ['in vec2 tcoordVCVSOutput[];\n', 'out vec2 tcoordVCGSOutput;']).result; GSSource = vtkShaderProgram.substitute(GSSource, '//VTK::TCoord::Impl', ['tcoordVCGSOutput = tcoordVCVSOutput[i];']).result; FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::TCoord::Dec', ['in vec2 tcoordVCVSOutput;', 'uniform sampler2D texture1;']).result; FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::TCoord::Impl', ['gl_FragData[0] = gl_FragData[0]*texture2D(texture1, tcoordVCVSOutput.st);']).result; } if (model.renderable.getAreScalarsMappedFromCells()) { GSSource = vtkShaderProgram.substitute(GSSource, '//VTK::PrimID::Impl', ['gl_PrimitiveID = gl_PrimitiveIDIn;']).result; } shaders.Vertex = VSSource; shaders.Geometry = GSSource; shaders.Fragment = FSSource; } }; publicAPI.replaceShaderPicking = (shaders, ren, actor) => { let FSSource = shaders.Fragment; FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::Picking::Dec', ['uniform vec3 mapperIndex;', 'uniform int picking;']).result; FSSource = vtkShaderProgram.substitute(FSSource, '//VTK::Picking::Impl', ' gl_FragData[0] = picking != 0 ? vec4(mapperIndex,1.0) : gl_FragData[0];').result; shaders.Fragment = FSSource; }; publicAPI.replaceShaderPositionVC = (shaders, ren, actor) => { // replace common shader code model.lastBoundBO.replaceShaderPositionVC(shaders, ren, actor); }; publicAPI.invokeShaderCallbacks = (cellBO, ren, actor) => { const listCallbacks = model.renderable.getViewSpecificProperties().ShadersCallbacks; if (listCallbacks) { listCallbacks.forEach(object => { object.callback(object.userData, cellBO, ren, actor); }); } }; publicAPI.setMapperShaderParameters = (cellBO, ren, actor) => { // Now to update the VAO too, if necessary. if (cellBO.getProgram().isUniformUsed('PrimitiveIDOffset')) { cellBO.getProgram().setUniformi('PrimitiveIDOffset', model.primitiveIDOffset); } if (cellBO.getProgram().isAttributeUsed('vertexWC')) { if (!cellBO.getVAO().addAttributeArray(cellBO.getProgram(), cellBO.getCABO(), 'vertexWC', cellBO.getCABO().getVertexOffset(), cellBO.getCABO().getStride(), model.context.FLOAT, 3, false)) { vtkErrorMacro('Error setting vertexWC in shader VAO.'); } } if (cellBO.getCABO().getElementCount() && (model.VBOBuildTime.getMTime() > cellBO.getAttributeUpdateTime().getMTime() || cellBO.getShaderSourceTime().getMTime() > cellBO.getAttributeUpdateTime().getMTime())) { 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 ${attrName}MC in shader VAO.`); } } }); if (cellBO.getProgram().isAttributeUsed('tcoordMC') && cellBO.getCABO().getTCoordOffset()) { if (!cellBO.getVAO().addAttributeArray(cellBO.getProgram(), cellBO.getCABO(), 'tcoordMC', cellBO.getCABO().getTCoordOffset(), cellBO.getCABO().getStride(), model.context.FLOAT, cellBO.getCABO().getTCoordComponents(), false)) { vtkErrorMacro('Error setting tcoordMC in shader VAO.'); } } else { cellBO.getVAO().removeAttributeArray('tcoordMC'); } if (cellBO.getProgram().isAttributeUsed('scalarColor') && cellBO.getCABO().getColorComponents()) { if (!cellBO.getVAO().addAttributeArray(cellBO.getProgram(), cellBO.getCABO().getColorBO(), 'scalarColor', cellBO.getCABO().getColorOffset(), cellBO.getCABO().getColorBOStride(), model.context.UNSIGNED_BYTE, 4, true)) { vtkErrorMacro('Error setting scalarColor in shader VAO.'); } } else { cellBO.getVAO().removeAttributeArray('scalarColor'); } if (model.internalColorTexture && cellBO.getProgram().isUniformUsed('texture1')) { const texUnit = model.internalColorTexture.getTextureUnit(); if (texUnit > -1) { cellBO.getProgram().setUniformi('texture1', model.internalColorTexture.getTextureUnit()); } } const tus = model.openGLActor2D.getActiveTextures(); if (tus) { for (let index = 0; index < tus.length; ++index) { const tex = tus[index]; const texUnit = tex.getTextureUnit(); const tname = `texture${texUnit + 1}`; if (cellBO.getProgram().isUniformUsed(tname)) { cellBO.getProgram().setUniformi(tname, texUnit); } } } // handle 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.setPropertyShaderParameters = (cellBO, ren, actor) => { const c = model.renderable.getColorMapColors(); if (!c || c.getNumberOfComponents() === 0) { const program = cellBO.getProgram(); const ppty = actor.getProperty(); const opacity = ppty.getOpacity(); program.setUniformf('opacityUniform', opacity); const dColor = ppty.getColor(); program.setUniform3fArray('diffuseColorUniform', dColor); } }; publicAPI.setLightingShaderParameters = (cellBO, ren, actor) => { // no-op }; 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(); const shiftScaleEnabled = cellBO.getCABO().getCoordShiftAndScaleEnabled(); const inverseShiftScaleMatrix = shiftScaleEnabled ? cellBO.getCABO().getInverseShiftAndScaleMatrix() : null; // Get the position of the actor const view = ren.getRenderWindow().getViews()[0]; const size = view.getViewportSize(ren); const vport = ren.getViewport(); const actorPos = actor.getActualPositionCoordinate().getComputedDoubleViewportValue(ren); // Get the window info // Assume tile viewport is 0 1 based on vtkOpenGLRenderer const tileViewport = [0.0, 0.0, 1.0, 1.0]; const visVP = [0.0, 0.0, 1.0, 1.0]; visVP[0] = vport[0] >= tileViewport[0] ? vport[0] : tileViewport[0]; visVP[1] = vport[1] >= tileViewport[1] ? vport[1] : tileViewport[1]; visVP[2] = vport[2] <= tileViewport[2] ? vport[2] : tileViewport[2]; visVP[3] = vport[3] <= tileViewport[3] ? vport[3] : tileViewport[3]; if (visVP[0] >= visVP[2]) { return; } if (visVP[1] >= visVP[3]) { return; } size[0] = round(size[0] * (visVP[2] - visVP[0]) / (vport[2] - vport[0])); size[1] = round(size[1] * (visVP[3] - visVP[1]) / (vport[3] - vport[1])); const winSize = model._openGLRenderer.getParent().getSize(); const xoff = round(actorPos[0] - (visVP[0] - vport[0]) * winSize[0]); const yoff = round(actorPos[1] - (visVP[1] - vport[1]) * winSize[1]); // set ortho projection const left = -xoff; let right = -xoff + size[0]; const bottom = -yoff; let top = -yoff + size[1]; // it's an error to call glOrtho with // either left==right or top==bottom if (left === right) { right = left + 1.0; } if (bottom === top) { top = bottom + 1.0; } // compute the combined ModelView matrix and send it down to save time in the shader const tmpMat4 = mat4.identity(new Float64Array(16)); tmpMat4[0] = 2.0 / (right - left); tmpMat4[1 * 4 + 1] = 2.0 / (top - bottom); tmpMat4[0 * 4 + 3] = -1.0 * (right + left) / (right - left); tmpMat4[1 * 4 + 3] = -1.0 * (top + bottom) / (top - bottom); tmpMat4[2 * 4 + 2] = 0.0; tmpMat4[2 * 4 + 3] = actor.getProperty().getDisplayLocation() === DisplayLocation.FOREGROUND ? -1.0 : 1.0; tmpMat4[3 * 4 + 3] = 1.0; mat4.transpose(tmpMat4, tmpMat4); program.setUniformMatrix('WCVCMatrix', safeMatrixMultiply([tmpMat4, inverseShiftScaleMatrix], mat4, model.tmpMat4)); }; 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 }; // ---------------------------------------------------------------------------- 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.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 setGet(publicAPI, model, ['context']); model.VBOBuildTime = {}; obj(model.VBOBuildTime, { mtime: 0 }); // Object methods vtkOpenGLPolyDataMapper2D(publicAPI, model); } // ---------------------------------------------------------------------------- const newInstance = newInstance$1(extend, 'vtkOpenGLPolyDataMapper2D'); // ---------------------------------------------------------------------------- var vtkPolyDataMapper2D = { newInstance, extend }; // Register ourself to OpenGL backend if imported registerOverride('vtkMapper2D', newInstance); export { vtkPolyDataMapper2D as default, extend, newInstance };