feat(package): voronoi: simple voronoi algoritm realization

package/voronoi/voronoi.frag

@@ -0,0 +1,49 @@
+#define PTS_N 500
+#define
+
+// Author @patriciogv - 2015
+// http://patriciogonzalezvivo.com
+
+#ifdef GL_ES
+precision mediump float;
+#endif
+
+uniform vec2 u_resolution;
+uniform vec2 u_mouse;
+uniform float u_time;
+
+float random (vec2 st) {
+    return fract(sin(dot(st.xy, vec2(12.9898,78.233)))*43758.5453123);
+}
+
+void mainImage( out vec4 fragColor, in vec2 fragCoord )
+{
+      vec2 st = gl_FragCoord.xy/u_resolution.xy;
+
+      float rnd = random( st );
+
+      for(i=0;i<PTS_N;i++){
+        u = rnd(); v = rnd();
+        x = int(x0 + u*ax + v*bx);
+        y = int(y0 + u*ay + v*by);
+        printf "%d,%d ", x, y;
+      }
+
+      min_d = 1e308
+      for (i = 1; i <= n; i++) {
+        dx = x - px[i]
+        dy = y - py[i]
+        d = sqrt(dx*dx + dy*dy)
+        if (d < min_d)
+          min_d = d
+      }
+
+      fade = FADE - min_d
+      if (fade < 0) fade = 0
+
+      color = color_lerp(0, FADE, c1[1],c1[2],c1[3], c2[1],c2[2],c2[3], fade)
+
+      printf "fill %s point %d,%d\n", color, x, y
+
+      //gl_FragColor = vec4(vec3(rnd),1.0);
+}