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combinePrimitivesSpec.js
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combinePrimitivesSpec.js
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'use strict';
var fs = require('fs');
var readGltf = require('../../lib/readGltf');
var addPipelineExtras = require('../../lib/addPipelineExtras');
var combinePrimitives = require('../../lib/combinePrimitives');
var writeGltf = require('../../lib/writeGltf');
var loadGltfUris = require('../../lib/loadGltfUris');
var removePipelineExtras = require('../../lib/removePipelineExtras');
var boxPath = './specs/data/combineObjects/box.gltf';
var doubleBoxToCombinePath = './specs/data/combineObjects/doubleBoxToCombine.gltf';
var doubleBoxNotCombinedPath = './specs/data/combineObjects/doubleBoxNotCombined.gltf';
var fiveBoxPath = './specs/data/combineObjects/fiveBox.gltf';
describe('combinePrimitives', function(){
it('does not affect single primitives', function(){
readGltf(boxPath, function(gltf) {
var box = gltf;
var stringBox = JSON.stringify(box);
combinePrimitives(box);
expect(stringBox).toEqual(JSON.stringify(box));
});
});
it('does not combine two primitives', function(){
readGltf(doubleBoxNotCombinedPath, function(gltf){
var doubleBoxNotCombined = gltf;
var stringDoubleBoxNotCombined = JSON.stringify(doubleBoxNotCombined);
combinePrimitives(doubleBoxNotCombined);
expect(stringDoubleBoxNotCombined).toEqual(JSON.stringify(doubleBoxNotCombined));
});
readGltf(doubleBoxToCombinePath, function(gltf){
var oneAttribute = gltf;
oneAttribute.meshes.meshTest.primitives[0].attributes = {
"POSITION": 'accessor_58'
};
combinePrimitives(oneAttribute);
expect(oneAttribute.meshes.meshTest.primitives.length).toEqual(2);
});
readGltf(doubleBoxToCombinePath, function(gltf){
var differentAttributes = gltf;
differentAttributes.meshes.meshTest.primitives[0].attributes = {
"NORMAL": 'accessor_60',
"POS": 'accessor_58',
"TEXCOORD_0": 'accessor_62'
};
combinePrimitives(differentAttributes);
expect(differentAttributes.meshes.meshTest.primitives.length).toEqual(2);
});
});
it('combines two primitives', function(){
readGltf(doubleBoxToCombinePath, function(gltf){
var doubleBoxToCombine = gltf;
combinePrimitives(doubleBoxToCombine);
removePipelineExtras(doubleBoxToCombine);
expect(doubleBoxToCombine.meshes.meshTest.primitives.length).toEqual(1);
expect(doubleBoxToCombine.meshes.meshTest.primitives[0].material).toEqual('Effect_outer');
expect(doubleBoxToCombine.meshes.meshTest.primitives[0].mode).toEqual(4);
expect(doubleBoxToCombine.meshes.meshTest.primitives[0].indices).toEqual('meshTest_INDEX_accessor_0');
expect(doubleBoxToCombine.meshes.meshTest.primitives[0].attributes).toEqual({
"NORMAL": 'meshTest_NORMAL_accessor_0',
"POSITION": 'meshTest_POSITION_accessor_0',
"TEXCOORD_0": 'meshTest_TEXCOORD_0_accessor_0'
});
expect(doubleBoxToCombine.accessors['meshTest_INDEX_accessor_0']).toEqual({
"bufferView": "meshTest_INDEX_bufferView_0",
"byteOffset": 0,
"byteStride": 0,
"componentType": 5123,
"type": "SCALAR",
"count": 516
});
expect(doubleBoxToCombine.accessors['meshTest_POSITION_accessor_0']).toEqual({
"bufferView": "meshTest_POSITION_bufferView_0",
"byteOffset": 0,
"byteStride": 12,
"componentType": 5126,
"type": "VEC3",
"count": 320,
"max": [0.5, 0.5, 0.5],
"min": [-0.5, -0.5, -0.5]
});
expect(doubleBoxToCombine.bufferViews['meshTest_INDEX_bufferView_0'].buffer).toEqual('meshTest_INDEX_buffer_0');
});
});
it('combines some primitives', function(){
readGltf(fiveBoxPath, function(gltf){
var fiveBox = gltf;
combinePrimitives(fiveBox);
expect(fiveBox.meshes.meshTest.primitives.length).toEqual(3);
expect(Object.keys(fiveBox.accessors).indexOf('meshTest_INDEX_accessor_0')).not.toEqual(-1);
expect(Object.keys(fiveBox.accessors).indexOf('meshTest_POSITION_accessor_0')).not.toEqual(-1);
expect(Object.keys(fiveBox.accessors).indexOf('meshTest_INDEX_accessor_1')).not.toEqual(-1);
expect(Object.keys(fiveBox.accessors).indexOf('meshTest_POSITION_accessor_1')).not.toEqual(-1);
expect(Object.keys(fiveBox.bufferViews).indexOf('meshTest_INDEX_bufferView_0')).not.toEqual(-1);
expect(Object.keys(fiveBox.bufferViews).indexOf('meshTest_POSITION_bufferView_0')).not.toEqual(-1);
expect(Object.keys(fiveBox.bufferViews).indexOf('meshTest_INDEX_bufferView_1')).not.toEqual(-1);
expect(Object.keys(fiveBox.bufferViews).indexOf('meshTest_POSITION_bufferView_1')).not.toEqual(-1);
expect(Object.keys(fiveBox.buffers).indexOf('meshTest_INDEX_buffer_0')).not.toEqual(-1);
expect(Object.keys(fiveBox.buffers).indexOf('meshTest_POSITION_buffer_0')).not.toEqual(-1);
expect(Object.keys(fiveBox.buffers).indexOf('meshTest_INDEX_buffer_1')).not.toEqual(-1);
expect(Object.keys(fiveBox.buffers).indexOf('meshTest_POSITION_buffer_1')).not.toEqual(-1);
expect(fiveBox.accessors['meshTest_INDEX_accessor_1'].bufferView).toEqual('meshTest_INDEX_bufferView_1');
expect(fiveBox.bufferViews['meshTest_INDEX_bufferView_1'].buffer).toEqual('meshTest_INDEX_buffer_1');
});
});
it('throws an error', function() {
readGltf(doubleBoxToCombinePath, function(gltf) {
var typeError = gltf;
typeError.accessors.accessor_29.type = 'VEC3';
expect(function () {
combinePrimitives(typeError);
}).toThrow();
});
readGltf(doubleBoxToCombinePath, function(gltf){
var componentTypeError = gltf;
componentTypeError.accessors.accessor_29.componentType = 5126;
expect(function () {
combinePrimitives(componentTypeError);
}).toThrow();
});
});
});