Patent Document ID: 20110134121
Application ID: 12690259
Patent Flag: 0

Claim One:
1. A lighting environment simulation method implemented in a data processing device, the method comprising: (a) triangulating a three-dimensional (3D) model of an object obtained from a storage device into a plurality of triangles; (b) simulating a lighting environment for the 3D model, comprising determining a lighting range, a light source position, a lighting direction, a lighting depth, and attenuation coefficients of points on the lighting depth; (c) determining an actual display color for each triangle of the 3D model according to an original color of the 3D model, an intersection angle between a light ray S along the lighting direction and a normal vector of the triangle, and a distance between the triangle and the light source position; and (d) projecting the 3D model onto a display device according to coordinates and the actual display color of each triangle of the 3D model.