91 lines
2.1 KiB
JavaScript
91 lines
2.1 KiB
JavaScript
import NodeMaterial, { addNodeMaterial } from './NodeMaterial.js';
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import { uniform } from '../core/UniformNode.js';
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import { cameraProjectionMatrix } from '../accessors/CameraNode.js';
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import { materialRotation } from '../accessors/MaterialNode.js';
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import { modelViewMatrix, modelWorldMatrix } from '../accessors/ModelNode.js';
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import { positionLocal } from '../accessors/PositionNode.js';
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import { float, vec2, vec3, vec4 } from '../shadernode/ShaderNode.js';
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import { SpriteMaterial } from 'three';
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const defaultValues = new SpriteMaterial();
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class SpriteNodeMaterial extends NodeMaterial {
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constructor( parameters ) {
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super();
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this.isSpriteNodeMaterial = true;
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this.lights = false;
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this.normals = false;
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this.positionNode = null;
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this.rotationNode = null;
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this.scaleNode = null;
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this.setDefaultValues( defaultValues );
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this.setValues( parameters );
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}
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setupPosition( { object, context } ) {
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// < VERTEX STAGE >
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const { positionNode, rotationNode, scaleNode } = this;
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const vertex = positionLocal;
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let mvPosition = modelViewMatrix.mul( vec3( positionNode || 0 ) );
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let scale = vec2( modelWorldMatrix[ 0 ].xyz.length(), modelWorldMatrix[ 1 ].xyz.length() );
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if ( scaleNode !== null ) {
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scale = scale.mul( scaleNode );
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}
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let alignedPosition = vertex.xy;
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if ( object.center && object.center.isVector2 === true ) {
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alignedPosition = alignedPosition.sub( uniform( object.center ).sub( 0.5 ) );
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}
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alignedPosition = alignedPosition.mul( scale );
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const rotation = float( rotationNode || materialRotation );
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const rotatedPosition = alignedPosition.rotate( rotation );
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mvPosition = vec4( mvPosition.xy.add( rotatedPosition ), mvPosition.zw );
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const modelViewProjection = cameraProjectionMatrix.mul( mvPosition );
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context.vertex = vertex;
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return modelViewProjection;
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}
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copy( source ) {
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this.positionNode = source.positionNode;
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this.rotationNode = source.rotationNode;
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this.scaleNode = source.scaleNode;
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return super.copy( source );
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}
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}
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export default SpriteNodeMaterial;
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addNodeMaterial( 'SpriteNodeMaterial', SpriteNodeMaterial );
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