| import { LineSegments } from '../objects/LineSegments.js'; |
| import { LineBasicMaterial } from '../materials/LineBasicMaterial.js'; |
| import { Float32BufferAttribute } from '../core/BufferAttribute.js'; |
| import { BufferGeometry } from '../core/BufferGeometry.js'; |
| import { Color } from '../math/Color.js'; |
|
|
| class GridHelper extends LineSegments { |
|
|
| constructor( size = 10, divisions = 10, color1 = 0x444444, color2 = 0x888888 ) { |
|
|
| color1 = new Color( color1 ); |
| color2 = new Color( color2 ); |
|
|
| const center = divisions / 2; |
| const step = size / divisions; |
| const halfSize = size / 2; |
|
|
| const vertices = [], colors = []; |
|
|
| for ( let i = 0, j = 0, k = - halfSize; i <= divisions; i ++, k += step ) { |
|
|
| vertices.push( - halfSize, 0, k, halfSize, 0, k ); |
| vertices.push( k, 0, - halfSize, k, 0, halfSize ); |
|
|
| const color = i === center ? color1 : color2; |
|
|
| color.toArray( colors, j ); j += 3; |
| color.toArray( colors, j ); j += 3; |
| color.toArray( colors, j ); j += 3; |
| color.toArray( colors, j ); j += 3; |
|
|
| } |
|
|
| const geometry = new BufferGeometry(); |
| geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) ); |
| geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) ); |
|
|
| const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } ); |
|
|
| super( geometry, material ); |
|
|
| this.type = 'GridHelper'; |
|
|
| } |
|
|
| dispose() { |
|
|
| this.geometry.dispose(); |
| this.material.dispose(); |
|
|
| } |
|
|
| } |
|
|
|
|
| export { GridHelper }; |
|
|
