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improve appearance of lay-flat target

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This commit is contained in:
Stewart Allen 2021-10-10 15:33:27 -04:00
commit a0e9584446
1 changed files with 17 additions and 1 deletions
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18
src/kiri/tools.js
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@ -1,8 +1,24 @@
kiri.load(function(API) {
// circle
let pgeo = new THREE.CircleGeometry(8, 30);
let pmat = new THREE.MeshBasicMaterial({color: 0xff0000, opacity: 0.5, transparent: true});
let pmesh = new THREE.Mesh(pgeo, pmat);
let wgeo = new THREE.WireframeGeometry(pgeo);
// circle outline
let pi = pgeo.index.array;
let pp = pgeo.attributes.position.array;
let np = [];
for (let i=0; i<pi.length; i++) {
if (pi[i] * pi[i+1]) {
np.push(pp[pi[i]*3+0]);
np.push(pp[pi[i]*3+1]);
np.push(pp[pi[i]*3+2]);
np.push(pp[pi[i+1]*3+0]);
np.push(pp[pi[i+1]*3+1]);
np.push(pp[pi[i+1]*3+2]);
}
}
let wgeo = new THREE.BufferGeometry();
wgeo.setAttribute('position', new THREE.BufferAttribute(np.toFloat32(), 3));
let wmat = new THREE.LineBasicMaterial({ color: 0x883333 });
let wmesh = new THREE.LineSegments(wgeo, wmat);
pmesh.add(wmesh);