floor saber-intersection, clean ups

src/components/floor-shader.js

@@ -0,0 +1,54 @@
+AFRAME.registerShader('floor-shader', {
+  schema: {
+    src: {type: 'map', is: 'uniform'},
+    normalMap: {type: 'map', is: 'uniform'},
+    envMap: {type: 'map', is: 'uniform'},
+    hitRight: {type: 'vec3', is: 'uniform', default: {x: 0, y: 1, z: 0}},
+    hitLeft: {type: 'vec3', is: 'uniform', default: {x: 0, y: 0, z: 0}}
+  },
+
+  vertexShader: `
+    varying vec2 uvs;
+    varying vec3 worldPos;
+    void main() {
+      uvs.xy = uv.xy;
+      vec4 p = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+      worldPos = (modelMatrix * vec4( position, 1.0 )).xyz;
+      gl_Position = p;
+    }
+  `,
+
+  fragmentShader: `
+    varying vec2 uvs;
+    varying vec3 worldPos;
+    uniform sampler2D src;
+    uniform sampler2D normalMap;
+    uniform sampler2D envMap;
+    uniform vec3 hitRight;
+    uniform vec3 hitLeft;
+
+    vec3 drawCircle(vec3 p, vec3 center, float radius, float edgeWidth, vec3 color) {
+      return color*(1.0-smoothstep(radius, radius+edgeWidth, length(p-center)));
+    }
+
+    void main() {
+      vec2 p = uvs.xy - 0.5;
+      p*= 4.0;
+
+      vec3 col = texture2D(src, uvs).xyz;
+
+      col += drawCircle(worldPos, hitRight, 0.04, 0.05, vec3(1.0, 0.4, 0.4));
+      col += drawCircle(worldPos, hitRight, 0.02, 0.005, vec3(1.0, 1.0, 1.0));
+      col += drawCircle(worldPos, hitLeft, 0.04, 0.05, vec3(1.0, 0.4, 0.4));
+      col += drawCircle(worldPos, hitLeft, 0.02, 0.005, vec3(1.0, 1.0, 1.0));
+
+      vec3 normal = normalize(texture2D(normalMap, uvs).xyz);
+
+      // environment reflection
+      vec3 reflectVec = normalize(reflect(normalize(worldPos - cameraPosition), normal));
+      vec3 reflectView = normalize((viewMatrix * vec4(reflectVec, 0.0)).xyz + vec3(0.0, 0.0, 1.0));
+
+      gl_FragColor = vec4(texture2D(envMap, reflectView.xy * vec2(0.5, -1.0) + vec2(0.75, 1.1)).xyz * 0.08 + col, 0.9 + col.x);
+    }
+  `
+});