AI_Assistant/grid-apps-cmms
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use bounds caching to speed up rotate & scale operations

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This commit is contained in:
Stewart Allen 2022-01-08 16:39:28 -05:00
commit 155d01db5b
1 changed files with 14 additions and 3 deletions
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17
src/mesh/api.js
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@ -298,6 +298,7 @@ let api = mesh.api = {
};
let deferFn = [];
let boundsCache = {};
let util = mesh.util = {
@ -381,9 +382,19 @@ let util = mesh.util = {
if (geometry) {
let matrix = object.matrixWorld;
let position = geometry.attributes.position.clone();
position.applyMatrix4(new THREE.Matrix4().extractRotation(matrix));
let bounds = new THREE.Box3().setFromBufferAttribute(position);
let bkey = [matrix.elements.map(v => v.round(5))].join(',')
let cached = boundsCache[object.id];
let bounds;
if (!cached || cached.bkey !== bkey) {
let position = geometry.attributes.position.clone();
position.applyMatrix4(new THREE.Matrix4().extractRotation(matrix));
bounds = new THREE.Box3().setFromBufferAttribute(position);
cached = boundsCache[object.id] = {
bkey,
bounds
};
}
bounds = cached.bounds.clone();
let bt = new THREE.Box3().copy(bounds);
let m4 = new THREE.Matrix4();
m4.setPosition(new THREE.Vector3().setFromMatrixPosition(object.matrixWorld));