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Merge pull request #259 from hawkaa/hakon/tinkercad

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feat: allow for tab separated obj from Tinkercad
This commit is contained in:
Sean Lilley 2021-09-07 09:53:54 -04:00 committed by GitHub
commit 3f8d2e6af7
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4 changed files with 71 additions and 3 deletions
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6
lib/loadObj.js
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@ -45,10 +45,10 @@ function Primitive() {
// OBJ regex patterns are modified from ThreeJS (https://github.com/mrdoob/three.js/blob/master/examples/js/loaders/OBJLoader.js)
const vertexPattern =
/v( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)/; // v float float float
/v(\s+[\d|\.|\+|\-|e|E]+)(\s+[\d|\.|\+|\-|e|E]+)(\s+[\d|\.|\+|\-|e|E]+)/; // v float float float
const normalPattern =
/vn( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)/; // vn float float float
const uvPattern = /vt( +[\d|\.|\+|\-|e|E]+)( +[\d|\.|\+|\-|e|E]+)/; // vt float float
/vn(\s+[\d|\.|\+|\-|e|E]+)(\s+[\d|\.|\+|\-|e|E]+)(\s+[\d|\.|\+|\-|e|E]+)/; // vn float float float
const uvPattern = /vt(\s+[\d|\.|\+|\-|e|E]+)(\s+[\d|\.|\+|\-|e|E]+)/; // vt float float
const facePattern = /(-?\d+)\/?(-?\d*)\/?(-?\d*)/g; // for any face format "f v", "f v/v", "f v//v", "f v/v/v"
const scratchCartesian = new Cartesian3();

12
specs/data/box-with-tabs/box-with-tabs.mtl Normal file
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@ -0,0 +1,12 @@
# Blender MTL File: 'None'
# Material Count: 1
newmtl Material
Ns 96.078431
Ka 0.100000 0.000000 0.000000
Kd 0.640000 0.640000 0.640000
Ks 0.500000 0.500000 0.500000
Ke 0.000000 0.000000 0.100000
Ni 1.000000
d 1.000000
illum 2

44
specs/data/box-with-tabs/box-with-tabs.obj Normal file
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@ -0,0 +1,44 @@
mtllib box.mtl
o Cube
v -1.000000 -1.00000 1.000000
v -1.000000 1.000000 1.000000
v -1.000000 -1.000000 -1.000000
v -1.000000 1.000000 -1.000000
v 1.000000 -1.000000 1.000000
v 1.000000 1.000000 1.000000
v 1.000000 -1.000000 -1.000000
v 1.000000 1.000000 -1.000000
vt 0.0000 0.0000
vt 1.0000 0.0000
vt 1.0000 1.0000
vt 0.0000 1.0000
vt 0.0000 0.0000
vt 1.0000 0.0000
vt 1.0000 1.0000
vt 0.0000 1.0000
vt 0.0000 0.0000
vt 1.0000 0.0000
vt 1.0000 1.0000
vt 0.0000 1.0000
vt 0.0000 0.0000
vt 1.0000 0.0000
vt 1.0000 1.0000
vt 0.0000 1.0000
vt 1.0000 0.0000
vt 1.0000 1.0000
vt 0.0000 0.0000
vt 0.0000 1.0000
vn -1.0000 0.0000 0.0000
vn 0.0000 0.0000 -1.0000
vn 1.0000 0.0000 0.0000
vn 0.0000 0.0000 1.0000
vn 0.0000 -1.0000 0.0000
vn 0.0000 1.0000 0.0000
usemtl Material
s off
f 1/1/1 2/2/1 4/3/1 3/4/1
f 3/5/2 4/6/2 8/7/2 7/8/2
f 7/9/3 8/10/3 6/11/3 5/12/3
f 5/13/4 6/14/4 2/15/4 1/16/4
f 3/5/5 7/17/5 5/18/5 1/16/5
f 8/19/6 4/6/6 2/15/6 6/20/6

12
specs/lib/loadObjSpec.js
View File

@ -66,6 +66,7 @@ const objIncompleteUvsPath =
"specs/data/box-incomplete-attributes/box-incomplete-uvs.obj";
const objIncorrectWindingOrderPath =
"specs/data/box-incorrect-winding-order/box-incorrect-winding-order.obj";
const objWithTabs = "specs/data/box-with-tabs/box-with-tabs.obj";
const objInvalidPath = "invalid.obj";
function getMeshes(data) {
@ -535,6 +536,17 @@ describe("loadObj", () => {
expect(baseColorTexture.source).toBeDefined();
});
it("loads an obj where coordinates are separated by tabs", async () => {
/**
* We know Tinkercad to produce files with coordinates separated by tabs.
*/
const data = await loadObj(objWithTabs, options);
const primitive = getPrimitives(data)[0];
expect(primitive.positions.length / 3).toBe(24);
expect(primitive.normals.length / 3).toBe(24);
expect(primitive.uvs.length / 2).toBe(24);
});
it("separates faces that don't use the same attributes as other faces in the primitive", async () => {
const data = await loadObj(objMixedAttributesPath, options);
const primitives = getPrimitives(data);