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OLED 3-D Triangle |
| 6/18/08 |
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| void get_lines(uint8_t poly_num) { |
| This line starts the function. The variable poly_num tells it which polygon (in Poly_2D) to find the horizontal lines for. |
float slopetb,yinttb,slopes1,yints1; signed char topt=0,bott=0,side=0,ypt; |
| These lines initialize the variables used. "slopetb" is used to store the slope of the longest side, slope top bottom. "yinttb" is the y-intercept for the longest side. "slopes1" stores the slope of the shorter sides when they are needed. "yints1" stores the y-intercept for the shorter sides when they are needed. "topt", "bott", and "side" store the points location. For example if topt=0 then the first point in Poly_2D is the highest point. "ypt" stands for "y point" and it is used to count from the top point to the lowest point down the Y axis. |