created site just for chat

site/game/node_modules/three/src/helpers/PolarGridHelper.js

@@ -0,0 +1,96 @@
+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 PolarGridHelper extends LineSegments {
+
+	constructor( radius = 10, sectors = 16, rings = 8, divisions = 64, color1 = 0x444444, color2 = 0x888888 ) {
+
+		color1 = new Color( color1 );
+		color2 = new Color( color2 );
+
+		const vertices = [];
+		const colors = [];
+
+		// create the sectors
+
+		if ( sectors > 1 ) {
+
+			for ( let i = 0; i < sectors; i ++ ) {
+
+				const v = ( i / sectors ) * ( Math.PI * 2 );
+
+				const x = Math.sin( v ) * radius;
+				const z = Math.cos( v ) * radius;
+
+				vertices.push( 0, 0, 0 );
+				vertices.push( x, 0, z );
+
+				const color = ( i & 1 ) ? color1 : color2;
+
+				colors.push( color.r, color.g, color.b );
+				colors.push( color.r, color.g, color.b );
+
+			}
+
+		}
+
+		// create the rings
+
+		for ( let i = 0; i < rings; i ++ ) {
+
+			const color = ( i & 1 ) ? color1 : color2;
+
+			const r = radius - ( radius / rings * i );
+
+			for ( let j = 0; j < divisions; j ++ ) {
+
+				// first vertex
+
+				let v = ( j / divisions ) * ( Math.PI * 2 );
+
+				let x = Math.sin( v ) * r;
+				let z = Math.cos( v ) * r;
+
+				vertices.push( x, 0, z );
+				colors.push( color.r, color.g, color.b );
+
+				// second vertex
+
+				v = ( ( j + 1 ) / divisions ) * ( Math.PI * 2 );
+
+				x = Math.sin( v ) * r;
+				z = Math.cos( v ) * r;
+
+				vertices.push( x, 0, z );
+				colors.push( color.r, color.g, color.b );
+
+			}
+
+		}
+
+		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 = 'PolarGridHelper';
+
+	}
+
+	dispose() {
+
+		this.geometry.dispose();
+		this.material.dispose();
+
+	}
+
+}
+
+
+export { PolarGridHelper };