69 lines
1.7 KiB
JavaScript
69 lines
1.7 KiB
JavaScript
import * as THREE from 'three/src/Three'
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import {lineMaterial, pointMaterial} from './Sketcher'
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export function sketchLine(mouseLoc) {
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const p1Geom = new THREE.BufferGeometry().setAttribute('position',
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new THREE.BufferAttribute(new Float32Array(3), 3)
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)
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const p1 = new THREE.Points(p1Geom,
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new THREE.PointsMaterial().copy(pointMaterial)
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);
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p1.matrixAutoUpdate = false;
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p1.constraints = new Set()
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const p2Geom = new THREE.BufferGeometry().setAttribute('position',
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new THREE.BufferAttribute(new Float32Array(3), 3)
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)
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const p2 = new THREE.Points(
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p2Geom,
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new THREE.PointsMaterial().copy(pointMaterial)
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);
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p2.matrixAutoUpdate = false;
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p2.constraints = new Set()
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const lineGeom = new THREE.BufferGeometry().setAttribute('position',
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new THREE.BufferAttribute(new Float32Array(6), 3)
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);
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const line = new THREE.Line(lineGeom,
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new THREE.LineBasicMaterial().copy(lineMaterial)
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);
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line.matrixAutoUpdate = false;
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line.frustumCulled = false;
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line.constraints = new Set()
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lineGeom.attributes.position.set(mouseLoc)
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p1Geom.attributes.position.set(mouseLoc)
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if (this.subsequent) {
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this.constraints.set(++this.c_id,
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[
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'coincident', -1,
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[this.children[this.children.length - 2], p1, -1, -1]
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]
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)
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p1.constraints.add(this.c_id)
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this.children[this.children.length - 2].constraints.add(this.c_id)
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}
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return [p1, p2, line];
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}
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export function sketchLine2(mouseLoc, toPush) {
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const [p1, p2, line] = toPush
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p2.geometry.attributes.position.set(mouseLoc);
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p2.geometry.attributes.position.needsUpdate = true;
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p2.geometry.computeBoundingSphere();
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line.geometry.attributes.position.set(mouseLoc, 3)
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line.geometry.attributes.position.needsUpdate = true;
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} |