three#Uint32BufferAttribute TypeScript Examples

The following examples show how to use three#Uint32BufferAttribute. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: MapMartiniHeightNode.ts    From geo-three with MIT License 5 votes vote down vote up 
/**
	 * Process the height texture received from the tile data provider.
	 * 
	 * @param image - Image element received by the tile provider.
	 */
	public async onHeightImage(image: HTMLImageElement): Promise<void> 
	{
		const tileSize = image.width;
		const gridSize = tileSize + 1;
		var canvas = CanvasUtils.createOffscreenCanvas(tileSize, tileSize);

		var context = canvas.getContext('2d');
		context.imageSmoothingEnabled = false;
		context.drawImage(image, 0, 0, tileSize, tileSize, 0, 0, canvas.width, canvas.height);
		
		var imageData = context.getImageData(0, 0, canvas.width, canvas.height);
		var data = imageData.data;

		const terrain = MapMartiniHeightNode.getTerrain(data, tileSize, this.elevationDecoder);
		const martini = new Martini(gridSize);
		const tile = martini.createTile(terrain);
		const {vertices, triangles} = tile.getMesh(typeof this.meshMaxError === 'function' ? this.meshMaxError(this.level) : this.meshMaxError);

		const attributes = MapMartiniHeightNode.getMeshAttributes(vertices, terrain, tileSize, [-0.5, -0.5, 0.5, 0.5], this.exageration);

		this.geometry = new BufferGeometry();
		this.geometry.setIndex(new Uint32BufferAttribute(triangles, 1));
		this.geometry.setAttribute('position', new Float32BufferAttribute( attributes.position.value, attributes.position.size));
		this.geometry.setAttribute('uv', new Float32BufferAttribute( attributes.uv.value, attributes.uv.size));
		this.geometry.rotateX(Math.PI);

		var texture = new Texture(image);
		texture.generateMipmaps = false;
		texture.format = RGBAFormat;
		texture.magFilter = NearestFilter;
		texture.minFilter = NearestFilter;
		texture.needsUpdate = true;

		this.material.userData.heightMap.value = texture;
		// @ts-ignore
		this.material.map = texture;
		// @ts-ignore
		this.material.needsUpdate = true;
	}