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* Copyright 2020 Cognite AS
*/
import * as THREE from 'three';
import { PrimitiveAttributes } from '../../../workers/types/parser.types';
import { Sector } from '../../../models/cad/types';
import { TypedArray } from 'three';
import {
boxGeometry,
quadGeometry,
coneGeometry,
trapeziumGeometry,
torusLODs,
nutGeometry
} from './primitiveGeometries';
import { Materials } from './materials';
export function* createPrimitives(sector: Sector, materials: Materials) {
if (hasAny(sector.boxes)) {
yield createBoxes(sector.boxes, materials.box);
}
if (hasAny(sector.circles)) {
yield createCircles(sector.circles, materials.circle);
}
if (hasAny(sector.cones)) {
yield createCones(sector.cones, materials.cone);
}
if (hasAny(sector.eccentricCones)) {
yield createEccentricCones(sector.eccentricCones, materials.eccentricCone);
}
if (hasAny(sector.ellipsoidSegments)) {
yield createEllipsoidSegments(sector.ellipsoidSegments, materials.ellipsoidSegment);
}
if (hasAny(sector.generalCylinders)) {
yield createGeneralCylinders(sector.generalCylinders, materials.generalCylinder);
}
if (hasAny(sector.generalRings)) {
yield createGeneralRings(sector.generalRings, materials.generalRing);
}
if (hasAny(sector.quads)) {
yield createQuads(sector.quads, materials.quad);
}
if (hasAny(sector.sphericalSegments)) {
yield createSphericalSegments(sector.sphericalSegments, materials.sphericalSegment);
}
if (hasAny(sector.torusSegments)) {
yield createTorusSegments(sector.torusSegments, materials.torusSegment);
}
if (hasAny(sector.trapeziums)) {
yield createTrapeziums(sector.trapeziums, materials.trapezium);
}
if (hasAny(sector.nuts)) {
yield createNuts(sector.nuts, materials.nut);
}
}
function hasAny(attributes: PrimitiveAttributes) {
return (
hasAnyElements(attributes.f32Attributes) ||
hasAnyElements(attributes.f64Attributes) ||
hasAnyElements(attributes.mat4Attributes) ||
hasAnyElements(attributes.u8Attributes) ||
hasAnyElements(attributes.vec3Attributes) ||
hasAnyElements(attributes.vec4Attributes)
);
}
function hasAnyElements<T extends TypedArray>(attributeMap: Map<string, T>): boolean {
let anyElements = false;
for (const value of attributeMap.values()) {
anyElements = anyElements || value.length > 0;
}
return anyElements;
}
function setAttributes(geometry: THREE.InstancedBufferGeometry, attributes: PrimitiveAttributes) {
// TODO u8Attributes should probably be renamed to colorAttributes or similar
// TODO should be enough with 3 elements for color instead of 4
for (const [name, value] of attributes.u8Attributes) {
const itemSize = 4;
// We assume uint8 data is color and that it always is normalized. For now this is probably ok.
// See comment above
geometry.setAttribute(`a_${name}`, new THREE.InstancedBufferAttribute(value, itemSize, true));
}
for (const [name, value] of attributes.f32Attributes) {
const itemSize = 1;
geometry.setAttribute(`a_${name}`, new THREE.InstancedBufferAttribute(value, itemSize));
}
for (const [name, value] of attributes.vec3Attributes) {
const itemSize = 3;
geometry.setAttribute(`a_${name}`, new THREE.InstancedBufferAttribute(value, itemSize));
}
for (const [name, value] of attributes.vec4Attributes) {
const itemSize = 4;
geometry.setAttribute(`a_${name}`, new THREE.InstancedBufferAttribute(value, itemSize));
}
for (const [name, value] of attributes.mat4Attributes) {
const buffer = new THREE.InstancedInterleavedBuffer(value, 16);
for (let column = 0; column < 4; column++) {
const attribute = new THREE.InterleavedBufferAttribute(buffer, 4, column * 4);
geometry.setAttribute(`a_${name}_column_${column}`, attribute);
}
}
for (const [name, value] of attributes.f64Attributes) {
// TODO consider passing this properly from Rust instead
const float32Value = new Float32Array(value);
const itemSize = 1;
geometry.setAttribute(`a_${name}`, new THREE.InstancedBufferAttribute(float32Value, itemSize));
}
const nodeIds = attributes.f64Attributes.get('nodeId');
Iif (!nodeIds) {
throw new Error('nodeId not present in f64Attributes');
}
geometry.maxInstancedCount = nodeIds.length;
}
function createBoxes(boxes: PrimitiveAttributes, material: THREE.ShaderMaterial) {
const geometry = new THREE.InstancedBufferGeometry();
geometry.setIndex(boxGeometry.index);
geometry.setAttribute('position', boxGeometry.position);
geometry.setAttribute('normal', boxGeometry.normal);
setAttributes(geometry, boxes);
// TODO add frustum culling back for all meshes after adding proper boudning boxes
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.name = `Primitives (Boxes)`;
return mesh;
}
function createCircles(circles: PrimitiveAttributes, material: THREE.ShaderMaterial) {
const geometry = new THREE.InstancedBufferGeometry();
geometry.setIndex(quadGeometry.index);
geometry.setAttribute('position', quadGeometry.position);
geometry.setAttribute('normal', quadGeometry.position);
setAttributes(geometry, circles);
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.name = `Primitives (Circles)`;
return mesh;
}
function createCones(cones: PrimitiveAttributes, material: THREE.ShaderMaterial) {
const geometry = new THREE.InstancedBufferGeometry();
geometry.setIndex(coneGeometry.index);
geometry.setAttribute('position', coneGeometry.position);
setAttributes(geometry, cones);
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.onBeforeRender = () => updateMaterialInverseModelMatrix(material, mesh.matrixWorld);
mesh.name = `Primitives (Cones)`;
return mesh;
}
function createEccentricCones(eccentricCones: PrimitiveAttributes, material: THREE.ShaderMaterial) {
const geometry = new THREE.InstancedBufferGeometry();
geometry.setIndex(coneGeometry.index);
geometry.setAttribute('position', coneGeometry.position);
setAttributes(geometry, eccentricCones);
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.onBeforeRender = () => updateMaterialInverseModelMatrix(material, mesh.matrixWorld);
mesh.name = `Primitives (EccentricCones)`;
return mesh;
}
function createEllipsoidSegments(ellipsoidSegments: PrimitiveAttributes, material: THREE.ShaderMaterial) {
const geometry = new THREE.InstancedBufferGeometry();
geometry.setIndex(coneGeometry.index);
geometry.setAttribute('position', coneGeometry.position);
setAttributes(geometry, ellipsoidSegments);
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.onBeforeRender = () => updateMaterialInverseModelMatrix(material, mesh.matrixWorld);
mesh.name = `Primitives (EllipsoidSegments)`;
return mesh;
}
function createGeneralCylinders(generalCylinders: PrimitiveAttributes, material: THREE.ShaderMaterial) {
const geometry = new THREE.InstancedBufferGeometry();
geometry.setIndex(coneGeometry.index);
geometry.setAttribute('position', coneGeometry.position);
setAttributes(geometry, generalCylinders);
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.onBeforeRender = () => updateMaterialInverseModelMatrix(material, mesh.matrixWorld);
mesh.name = `Primitives (GeneralCylinders)`;
return mesh;
}
function createGeneralRings(generalRings: PrimitiveAttributes, material: THREE.ShaderMaterial) {
const geometry = new THREE.InstancedBufferGeometry();
geometry.setIndex(quadGeometry.index);
geometry.setAttribute('position', quadGeometry.position);
setAttributes(geometry, generalRings);
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.onBeforeRender = () => updateMaterialInverseModelMatrix(material, mesh.matrixWorld);
mesh.name = `Primitives (GeneralRings)`;
return mesh;
}
function createSphericalSegments(sphericalSegments: PrimitiveAttributes, material: THREE.ShaderMaterial) {
const geometry = new THREE.InstancedBufferGeometry();
geometry.setIndex(coneGeometry.index);
geometry.setAttribute('position', coneGeometry.position);
setAttributes(geometry, sphericalSegments);
const radii = sphericalSegments.f32Attributes.get('radius');
Iif (!radii) {
throw new Error('Spherical segments missing radius');
}
// TODO We need to set the radii manually here because
// we are reusing the ellipsoid shader. We should
// consider making this cleaner - either by duplicating
// this data from Rust or by creating a separate shader for
// spherical segments
geometry.setAttribute(`a_horizontalRadius`, new THREE.InstancedBufferAttribute(radii, 1));
geometry.setAttribute(`a_verticalRadius`, new THREE.InstancedBufferAttribute(radii, 1));
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.onBeforeRender = () => updateMaterialInverseModelMatrix(material, mesh.matrixWorld);
mesh.name = `Primitives (EllipsoidSegments)`;
return mesh;
}
function createQuads(quads: PrimitiveAttributes, material: THREE.ShaderMaterial) {
const geometry = new THREE.InstancedBufferGeometry();
geometry.setIndex(quadGeometry.index);
geometry.setAttribute('position', quadGeometry.position);
geometry.setAttribute('normal', quadGeometry.normal);
setAttributes(geometry, quads);
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.name = `Primitives (Quads)`;
return mesh;
}
function createTrapeziums(trapeziums: PrimitiveAttributes, material: THREE.ShaderMaterial) {
const geometry = new THREE.InstancedBufferGeometry();
geometry.setIndex(trapeziumGeometry.index);
geometry.setAttribute('position', trapeziumGeometry.position);
setAttributes(geometry, trapeziums);
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.onBeforeRender = () => updateMaterialInverseModelMatrix(material, mesh.matrixWorld);
mesh.name = `Primitives (Trapeziums)`;
return mesh;
}
function calcLODDistance(size: number, lodLevel: number, numLevels: number): number {
if (lodLevel >= numLevels - 1) {
return 0;
}
const scaleFactor = 15; // Seems to be a reasonable number
return size * scaleFactor ** (numLevels - 1 - lodLevel);
}
function createTorusSegments(torusSegments: PrimitiveAttributes, material: THREE.ShaderMaterial) {
const sizes = torusSegments.f32Attributes.get('size');
Iif (!sizes) {
throw new Error('Torus segments are missing size attribute');
}
const biggestTorus = sizes.reduce((acc, size) => Math.max(acc, size));
const lod = new THREE.LOD();
lod.name = 'Primitives (TorusSegments)';
for (const [level, torus] of torusLODs.entries()) {
const geometry = new THREE.InstancedBufferGeometry();
geometry.setIndex(torus.index);
geometry.setAttribute('position', torus.position);
setAttributes(geometry, torusSegments);
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
// TODO consider removing if not used in shader
mesh.onBeforeRender = () => updateMaterialInverseModelMatrix(material, mesh.matrixWorld);
mesh.name = `Primitives (TorusSegments) - LOD ${level}`;
lod.addLevel(mesh, calcLODDistance(biggestTorus, level, torusLODs.length));
}
return lod;
}
function createNuts(nuts: PrimitiveAttributes, material: THREE.ShaderMaterial) {
const geometry = new THREE.InstancedBufferGeometry();
geometry.setIndex(nutGeometry.index);
geometry.setAttribute('position', nutGeometry.position);
geometry.setAttribute('normal', nutGeometry.normal);
setAttributes(geometry, nuts);
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.name = `Primitives (Nuts)`;
return mesh;
}
function updateMaterialInverseModelMatrix(
material: THREE.ShaderMaterial | THREE.RawShaderMaterial,
matrixWorld: THREE.Matrix4
) {
material.uniforms.inverseModelMatrix.value.getInverse(matrixWorld);
}
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