Inheritance diagram for RayLight:
Public Member Functions | |
| virtual int | read (FILE *fp)=0 |
| virtual void | write (FILE *fp=stdout)=0 |
| virtual Point3D | getDiffuse (Point3D cameraPosition, struct RayIntersectionInfo &iInfo)=0 |
| virtual Point3D | getSpecular (Point3D cameraPosition, struct RayIntersectionInfo &iInfo)=0 |
| virtual int | isInShadow (struct RayIntersectionInfo &iInfo, class RayShape *shape, int &isectCount)=0 |
| virtual Point3D | transparency (struct RayIntersectionInfo &iInfo, class RayShape *shape, Point3D cLimit)=0 |
| virtual void | drawOpenGL (int index)=0 |
Public Attributes | |
| Point3D | color |
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This method calls the necessary OpenGL commands to render the light. index specifices the index of the light that is to be drawn. Implemented in RayDirectionalLight, RayPointLight, and RaySpotLight. |
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This virtual method returns the diffuse contribution of the light source to the specified hit location. It computes the amount of diffuse light reaching the hit location and scales that using the material properties of the hit location. The returned value is a 3D point whose coefficients should all be in the range [0,1]. Implemented in RayDirectionalLight, RayPointLight, and RaySpotLight. |
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This virtual method returns the specular contribution of the light source to the specified hit location. It computes the amount of diffuse light reaching the hit location, using the normal direction at the hit location (in iInfo), and scales that using the material properties of the hit location. The returned value is a 3D point whose coefficients should all be in the range [0,1]. Implemented in RayDirectionalLight, RayPointLight, and RaySpotLight. |
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This virtual method tests if the intersection point represented by iInfo is in shadow from the light source. The value of isectCount is incremented according to the number of intersection tests performed in order to detemine if the point of intersection is in shadow. The returned value is either 0 if the the intersection point is not in shadow or 1 if it is. Implemented in RayDirectionalLight, RayPointLight, and RaySpotLight. |
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This virtual method is responsible for reading in the light from a .ray file. Implemented in RayDirectionalLight, RayPointLight, and RaySpotLight. |
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This virtual method tests if the intersection point represented by iInfo is in partial shadow from the light source. A ray is cast from the hit location to the light source, and the transparency values are accumulated. If the transparency value falls below cLimit, the testing terminates. In computing the transparency value, isectCount is incremented according to the number of intersection tests performed and rayCount is incremented according to the number of rays that need to be cast. The returned value is a 3D point whose coefficients should all be in the range [0,1]. Implemented in RayDirectionalLight, RayPointLight, and RaySpotLight. |
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This virtual method is responsible for writing out the light source to a .ray file. If no file is specified, the light source is written out stdout. Implemented in RayDirectionalLight, RayPointLight, and RaySpotLight. |
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The color that the light source emits |
1.4.1