檢視 $pattern tri region 的原始碼


 $pattern_tri_region
 pattern_tri_num
 <math>x_{1}</math> <math>y_{1}</math>  <math>x_{2}</math> <math>y_{2}</math>  <math>x_{3}</math> <math>y_{3}</math>  <math>n_{r}</math> <math>\alpha</math> if_empty
 
 For a triangular shape, we need 3 points (x1,y1), (x2,y2), and (x3,y3) to define the triangular shape. Then the refractive index and the absorption coefficient is put in the simulation.