getDepthMaterial method

Material getDepthMaterial(Object3D object, Material material, Light light, double shadowCameraNear, double shadowCameraFar, int type,)

Implementation

Material getDepthMaterial(
  Object3D object,
  Material material,
  Light light,
  double shadowCameraNear,
  double shadowCameraFar,
  int type
) {
  Material? result;

  final customMaterial = light is PointLight ? object.customDistanceMaterial : object.customDepthMaterial;

  if (customMaterial != null) {
    result = customMaterial;
  } else {
    result = light is PointLight ? _distanceMaterial : _depthMaterial;
  }

  if ((
    _renderer.localClippingEnabled &&
    material.clipShadows == true &&
    material.clippingPlanes!.isNotEmpty
    ) ||
    (material.displacementMap != null && material.displacementScale != 0 ) ||
			( material.alphaMap  != null && material.alphaTest > 0 ) ||
    (material.map != null && material.alphaTest > 0)
  ) {
    // in this case we need a unique material instance reflecting the
    // appropriate state

    final keyA = result.uuid;
    final keyB = material.uuid;

    Map? materialsForVariant = _materialCache[keyA];

    if (materialsForVariant == null) {
      materialsForVariant = {};
      _materialCache[keyA] = materialsForVariant;
    }

    Material? cachedMaterial = materialsForVariant[keyB];

    if (cachedMaterial == null) {
      cachedMaterial = result.clone();
      materialsForVariant[keyB] = cachedMaterial;
    }

    result = cachedMaterial;
  }

  result.visible = material.visible;
  result.wireframe = material.wireframe;

  if (type == VSMShadowMap) {
    result.side = (material.shadowSide != null) ? material.shadowSide! : material.side;
  }
  else {
    result.side = (material.shadowSide != null) ? material.shadowSide! : shadowSide[material.side]!;
  }

		result.alphaMap = material.alphaMap;
		result.alphaTest = material.alphaTest;
		result.map = material.map;

  result.clipShadows = material.clipShadows;
  result.clippingPlanes = material.clippingPlanes;
  result.clipIntersection = material.clipIntersection;

  result.wireframeLinewidth = material.wireframeLinewidth;
  result.linewidth = material.linewidth;

  if (light is PointLight == true && result is MeshDistanceMaterial) {
    result.referencePosition.setFromMatrixPosition(light.matrixWorld);
    result.nearDistance = shadowCameraNear;
    result.farDistance = shadowCameraFar;

    return result;
  }
  else {
    return result;
  }
}