itowns/lib/Layer/ReferencingLayerProperties.js

A JS/WebGL framework for 3D geospatial data visualization

// next step is move these properties to Style class
function ReferLayerProperties(material, layer) {
  if (layer && layer.isGeometryLayer) {
    material.layer = layer;
    let opacity;
    if (material.uniforms && material.uniforms.opacity != undefined) {
      opacity = material.uniforms.opacity.value;
      Object.defineProperty(material.uniforms.opacity, 'value', {
        get: () => material.layer.opacity || opacity,
        set: value => {
          opacity = value;
        }
      });
    } else if (material.opacity != undefined) {
      opacity = material.opacity;
      Object.defineProperty(material, 'opacity', {
        get: () => material.layer.opacity,
        set: value => {
          opacity = value;
        }
      });
    }
    if (material.uniforms && material.uniforms.mode != undefined) {
      Object.defineProperty(material.uniforms.mode, 'value', {
        get: () => material.layer.pntsMode
      });
    }
    if (material.uniforms && material.uniforms.shape != undefined) {
      Object.defineProperty(material.uniforms.shape, 'value', {
        get: () => material.layer.pntsShape
      });
    }
    if (material.uniforms && material.uniforms.sizeMode != undefined) {
      Object.defineProperty(material.uniforms.sizeMode, 'value', {
        get: () => material.layer.pntsSizeMode
      });
    }
    if (material.uniforms && material.uniforms.minAttenuatedSize != undefined) {
      Object.defineProperty(material.uniforms.minAttenuatedSize, 'value', {
        get: () => material.layer.pntsMinAttenuatedSize
      });
    }
    if (material.uniforms && material.uniforms.maxAttenuatedSize != undefined) {
      Object.defineProperty(material.uniforms.maxAttenuatedSize, 'value', {
        get: () => material.layer.pntsMaxAttenuatedSize
      });
    }
    if (material.uniforms && material.uniforms.scale != undefined) {
      Object.defineProperty(material.uniforms.scale, 'value', {
        get: () => material.layer.scale
      });
    }
    let wireframe = material.wireframe;
    Object.defineProperty(material, 'wireframe', {
      get: () => material.layer.wireframe || wireframe,
      set: value => {
        wireframe = value;
      }
    });
    let transparent = material.transparent;
    let tPrev = transparent;
    Object.defineProperty(material, 'transparent', {
      get: () => {
        const t = material.layer.opacity < 1.0 || transparent;
        if (t !== tPrev) {
          material.needsUpdate = true;
          tPrev = t;
        }
        return t;
      },
      set: value => {
        transparent = value;
      }
    });
  }
  return material;
}
export default ReferLayerProperties;