Provided by: libsdl3-doc_3.2.8+ds-1_all 

NAME
SDL_GetRectAndLineIntersection - Calculate the intersection of a rectangle and line segment.
HEADER FILE
Defined in SDL3/SDL_rect.h
SYNOPSIS
#include "SDL3/SDL.h" bool SDL_GetRectAndLineIntersection(const SDL_Rect *rect, int *X1, int *Y1, int *X2, int *Y2);
DESCRIPTION
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 SDL_Rect structure representing the rectangle to intersect. 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.
AVAILABILITY
This function is available since SDL 3.2.0. Simple Directmedia Layer SDL 3.2.8 SDL_GetRectAndLineIntersection(3)