You are required to implement a simple c++ realistic rendering engine using Monte Carlo Path Tracing.
Some requirements and hints of this course project are listed below:
- Camera:
- A standard pinhole perspective camera is placed in right-handed world coordinate system.
- We store some necessary parameters to uniquely define a perspective camera in .xml file:
- eye: The camera position is in world space.
- lookat: The target position in world space that the camera points to.
- up: The up axis of camera in world space.
- fovy: The field-of-view on the y-axis of camera, the unit is degree.
- width/height: The resolution of camera film and result image.
- Geometry:
- We use standard .obj file to store scene geometry data in triangle mesh.
- All geometries are also placed in right-handed world coordinate system.
- You can parse scenes with tinyobj for conveniently.
- View or edit .mb scenes using Maya or other tools as you like.
- For bonus, you can implement other geometry shapes like quad, sphere, box, cylinder and cone.
- Material: We use standard .mtl file to store phong material parameters.The relationships between specified materials and geometries are described in .obj file using usemtl. A Phong model basically has the following parameters:
- Kd: the diffuse reflectance of material, map_Kd is the texture file path.
- Ks: the specular reflectance of material.
- Tr: the transmittance of material.
- Ns: shiness, the exponent of phong lobe.
- Ni: the Index of Refraction(IOR) of transparent object like glass and water.
- Light: The three scenes are illuminated by different numbers of area light. An area light emits energy uniformly from geometry surface. We store the radiance rgb value of area light in the .xml file, the mtlname is corresponding to .mtl.
