RCube Shader

RCube Shader

<script type="x-shader/x-vertex" id="vertexshader">

    attribute float alpha;
    varying float vAlpha;
    // Coloring: https://stackoverflow.com/questions/25740054/three-js-passing-vertex-colors-to-fragment-shader
    varying vec3 vColor;

    void main() {
      vColor = color;
      vAlpha = alpha;
      mat4 newViewMatrix = modelViewMatrix;
      mat4 newProjectionMatrix = projectionMatrix;
      vec4 mvPosition = newViewMatrix * vec4( position, 1.0 );
      // gl_PointSize = 3700.0 / length( mvPosition.xyz );
      // gl_PointSize = 1200.0 / length( mvPosition.xyz );
      gl_PointSize = 3000.0 / length( mvPosition.xyz );
      gl_Position = newProjectionMatrix * mvPosition;
    }

  </script>

  <script type="x-shader/x-vertex" id="vertexshaderCurrentSlice">

    attribute float alpha;
    varying float vAlpha;
    // Coloring: https://stackoverflow.com/questions/25740054/three-js-passing-vertex-colors-to-fragment-shader
    varying vec3 vColor;

    void main() {
      vColor = color;
      vAlpha = alpha;
      mat4 newViewMatrix = modelViewMatrix;
      mat4 newProjectionMatrix = projectionMatrix;
      vec4 mvPosition = newViewMatrix * vec4( position, 1.0 );
      gl_PointSize = 7000.0 / length( mvPosition.xyz );
      gl_Position = newProjectionMatrix * mvPosition;
    }

  </script>

  <script type="x-shader/x-fragment" id="fragmentshader">

    varying float vAlpha;
    varying vec3 vColor;

    void main() {
      gl_FragColor = vec4(vColor.rgb, 1);
      gl_FragColor.a *= vAlpha;
    }

</script>