添加关照、全局等高线、修改图层问题

static/sdk/three/jsm/shaders/KaleidoShader.js

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+/**
+ * Kaleidoscope Shader
+ * Radial reflection around center point
+ * Ported from: http://pixelshaders.com/editor/
+ * by Toby Schachman / http://tobyschachman.com/
+ *
+ * sides: number of reflections
+ * angle: initial angle in radians
+ */
+
+const KaleidoShader = {
+
+	name: 'KaleidoShader',
+
+	uniforms: {
+
+		'tDiffuse': { value: null },
+		'sides': { value: 6.0 },
+		'angle': { value: 0.0 }
+
+	},
+
+	vertexShader: /* glsl */`
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vUv = uv;
+			gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+
+		}`,
+
+	fragmentShader: /* glsl */`
+
+		uniform sampler2D tDiffuse;
+		uniform float sides;
+		uniform float angle;
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vec2 p = vUv - 0.5;
+			float r = length(p);
+			float a = atan(p.y, p.x) + angle;
+			float tau = 2. * 3.1416 ;
+			a = mod(a, tau/sides);
+			a = abs(a - tau/sides/2.) ;
+			p = r * vec2(cos(a), sin(a));
+			vec4 color = texture2D(tDiffuse, p + 0.5);
+			gl_FragColor = color;
+
+		}`
+
+};
+
+export { KaleidoShader };