= SDL_IntersectRectAndLine =
Calculate the intersection of a rectangle and line segment.
== Syntax ==
SDL_bool SDL_IntersectRectAndLine(const SDL_Rect *
rect, int *X1,
int *Y1, int *X2,
int *Y2);
== 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 [[SDL_TRUE]] if there is an intersection, [[SDL_FALSE]] otherwise.
== Remarks ==
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.
== Version ==
This function is available since SDL 2.0.0.
----
[[CategoryAPI]], [[CategoryRect]]