SDL_GetRectAndLineIntersection3
Calculate the intersection of a rectangle and line segment.
Usage
#include "SDL3/SDL.h"
bool SDL_GetRectAndLineIntersection(const SDL_Rect *rect, int *X1, int *Y1, int *X2, int *Y2);
Header file
Defined in SDL3/SDL_rect.h
Overview
This function is used to clip a line segment to a rectangle. A line segment contained entirely within the rectangle or that does not intersect will remain unchanged. A line segment that crosses the rectangle at either or both ends will be clipped to the boundary of the rectangle and the new coordinates saved in X1 , Y1 , X2 , and/or Y2 as necessary.
Function parameters
rect
|
an |
|---|---|
X1
|
a pointer to the starting X-coordinate of the line. |
Y1
|
a pointer to the starting Y-coordinate of the line. |
X2
|
a pointer to the ending X-coordinate of the line. |
Y2
|
a pointer to the ending Y-coordinate of the line. |
Return value
Returns true if there is an intersection, false otherwise.