116 lines
5.1 KiB
JavaScript
116 lines
5.1 KiB
JavaScript
"use strict";
|
|
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
|
|
const THREE = require("three");
|
|
class CSMHelper extends THREE.Group {
|
|
constructor(csm) {
|
|
super();
|
|
this.csm = csm;
|
|
this.displayFrustum = true;
|
|
this.displayPlanes = true;
|
|
this.displayShadowBounds = true;
|
|
const indices = new Uint16Array([0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7]);
|
|
const positions = new Float32Array(24);
|
|
const frustumGeometry = new THREE.BufferGeometry();
|
|
frustumGeometry.setIndex(new THREE.BufferAttribute(indices, 1));
|
|
frustumGeometry.setAttribute("position", new THREE.BufferAttribute(positions, 3, false));
|
|
const frustumLines = new THREE.LineSegments(frustumGeometry, new THREE.LineBasicMaterial());
|
|
this.add(frustumLines);
|
|
this.frustumLines = frustumLines;
|
|
this.cascadeLines = [];
|
|
this.cascadePlanes = [];
|
|
this.shadowLines = [];
|
|
}
|
|
updateVisibility() {
|
|
const displayFrustum = this.displayFrustum;
|
|
const displayPlanes = this.displayPlanes;
|
|
const displayShadowBounds = this.displayShadowBounds;
|
|
const frustumLines = this.frustumLines;
|
|
const cascadeLines = this.cascadeLines;
|
|
const cascadePlanes = this.cascadePlanes;
|
|
const shadowLines = this.shadowLines;
|
|
for (let i = 0, l = cascadeLines.length; i < l; i++) {
|
|
const cascadeLine = cascadeLines[i];
|
|
const cascadePlane = cascadePlanes[i];
|
|
const shadowLineGroup = shadowLines[i];
|
|
cascadeLine.visible = displayFrustum;
|
|
cascadePlane.visible = displayFrustum && displayPlanes;
|
|
shadowLineGroup.visible = displayShadowBounds;
|
|
}
|
|
frustumLines.visible = displayFrustum;
|
|
}
|
|
update() {
|
|
const csm = this.csm;
|
|
const camera = csm.camera;
|
|
const cascades = csm.cascades;
|
|
const mainFrustum = csm.mainFrustum;
|
|
const frustums = csm.frustums;
|
|
const lights = csm.lights;
|
|
const frustumLines = this.frustumLines;
|
|
const frustumLinePositions = frustumLines.geometry.getAttribute("position");
|
|
const cascadeLines = this.cascadeLines;
|
|
const cascadePlanes = this.cascadePlanes;
|
|
const shadowLines = this.shadowLines;
|
|
this.position.copy(camera.position);
|
|
this.quaternion.copy(camera.quaternion);
|
|
this.scale.copy(camera.scale);
|
|
this.updateMatrixWorld(true);
|
|
while (cascadeLines.length > cascades) {
|
|
this.remove(cascadeLines.pop());
|
|
this.remove(cascadePlanes.pop());
|
|
this.remove(shadowLines.pop());
|
|
}
|
|
while (cascadeLines.length < cascades) {
|
|
const cascadeLine = new THREE.Box3Helper(new THREE.Box3(), 16777215);
|
|
const planeMat = new THREE.MeshBasicMaterial({ transparent: true, opacity: 0.1, depthWrite: false, side: THREE.DoubleSide });
|
|
const cascadePlane = new THREE.Mesh(new THREE.PlaneGeometry(), planeMat);
|
|
const shadowLineGroup = new THREE.Group();
|
|
const shadowLine = new THREE.Box3Helper(new THREE.Box3(), 16776960);
|
|
shadowLineGroup.add(shadowLine);
|
|
this.add(cascadeLine);
|
|
this.add(cascadePlane);
|
|
this.add(shadowLineGroup);
|
|
cascadeLines.push(cascadeLine);
|
|
cascadePlanes.push(cascadePlane);
|
|
shadowLines.push(shadowLineGroup);
|
|
}
|
|
for (let i = 0; i < cascades; i++) {
|
|
const frustum = frustums[i];
|
|
const light = lights[i];
|
|
const shadowCam = light.shadow.camera;
|
|
const farVerts2 = frustum.vertices.far;
|
|
const cascadeLine = cascadeLines[i];
|
|
const cascadePlane = cascadePlanes[i];
|
|
const shadowLineGroup = shadowLines[i];
|
|
const shadowLine = shadowLineGroup.children[0];
|
|
cascadeLine.box.min.copy(farVerts2[2]);
|
|
cascadeLine.box.max.copy(farVerts2[0]);
|
|
cascadeLine.box.max.z += 1e-4;
|
|
cascadePlane.position.addVectors(farVerts2[0], farVerts2[2]);
|
|
cascadePlane.position.multiplyScalar(0.5);
|
|
cascadePlane.scale.subVectors(farVerts2[0], farVerts2[2]);
|
|
cascadePlane.scale.z = 1e-4;
|
|
this.remove(shadowLineGroup);
|
|
shadowLineGroup.position.copy(shadowCam.position);
|
|
shadowLineGroup.quaternion.copy(shadowCam.quaternion);
|
|
shadowLineGroup.scale.copy(shadowCam.scale);
|
|
shadowLineGroup.updateMatrixWorld(true);
|
|
this.attach(shadowLineGroup);
|
|
shadowLine.box.min.set(shadowCam.bottom, shadowCam.left, -shadowCam.far);
|
|
shadowLine.box.max.set(shadowCam.top, shadowCam.right, -shadowCam.near);
|
|
}
|
|
const nearVerts = mainFrustum.vertices.near;
|
|
const farVerts = mainFrustum.vertices.far;
|
|
frustumLinePositions.setXYZ(0, farVerts[0].x, farVerts[0].y, farVerts[0].z);
|
|
frustumLinePositions.setXYZ(1, farVerts[3].x, farVerts[3].y, farVerts[3].z);
|
|
frustumLinePositions.setXYZ(2, farVerts[2].x, farVerts[2].y, farVerts[2].z);
|
|
frustumLinePositions.setXYZ(3, farVerts[1].x, farVerts[1].y, farVerts[1].z);
|
|
frustumLinePositions.setXYZ(4, nearVerts[0].x, nearVerts[0].y, nearVerts[0].z);
|
|
frustumLinePositions.setXYZ(5, nearVerts[3].x, nearVerts[3].y, nearVerts[3].z);
|
|
frustumLinePositions.setXYZ(6, nearVerts[2].x, nearVerts[2].y, nearVerts[2].z);
|
|
frustumLinePositions.setXYZ(7, nearVerts[1].x, nearVerts[1].y, nearVerts[1].z);
|
|
frustumLinePositions.needsUpdate = true;
|
|
}
|
|
}
|
|
exports.CSMHelper = CSMHelper;
|
|
//# sourceMappingURL=CSMHelper.cjs.map
|