CodePudding user response:
Please see a picture only, no thought to the red line,CodePudding user response:
Be A0 minus A0, A1 points to the direction vector of A1, using the vector (1, 0) and vector dot product,CodePudding user response:
Can start from simple two point detection, assumptions about a line a and b two endpoints, they are the height difference of h, and all points on the line between two points "is the highest" and "minimum" difference is h, so what do you use the h/h can be a value to determine the degree of folds, the more powerful the closer to zero said ruffle (horizontal) h is very small, the more close to 1, the representation is straight on straight down (oblique on the),