package sdl3

import "core:c"

Point  :: distinct [2]c.int
FPoint :: distinct [2]f32

Rect :: struct {
	x, y: c.int,
	w, h: c.int,
}

FRect :: struct {
	x, y: f32,
	w, h: f32,
}

RectToFRect :: #force_inline proc "c" (rect: Rect, frect: ^FRect) {
	frect.x = f32(rect.x)
	frect.y = f32(rect.y)
	frect.w = f32(rect.w)
	frect.h = f32(rect.h)
}


@(require_results)
PointInRect :: proc "c" (p: Point, r: Rect) -> bool {
	return ( (p.x >= r.x) && (p.x < (r.x + r.w)) &&
	        (p.y >= r.y) && (p.y < (r.y + r.h)) )
}

@(require_results)
PointInRectFloat :: proc "c" (p: FPoint, r: FRect) -> bool {
	return ( (p.x >= r.x) && (p.x <= (r.x + r.w)) &&
	        (p.y >= r.y) && (p.y <= (r.y + r.h)) )
}

@(require_results)
RectEmpty :: proc "c" (r: Rect) -> bool {
	return r.w <= 0 || r.h <= 0
}


@(require_results)
RectEqual :: proc "c" (a, b: Rect) -> bool {
	return a == b
}

@(default_calling_convention="c", link_prefix="SDL_", require_results)
foreign lib {
	HasRectIntersection             :: proc(#by_ptr A, B: Rect)                                                   -> bool ---
	GetRectIntersection             :: proc(#by_ptr A, B: Rect, result: ^Rect)                                    -> bool ---
	GetRectUnion                    :: proc(#by_ptr A, B: Rect, result: ^Rect)                                    -> bool ---
	GetRectEnclosingPoints          :: proc(points: [^]Point, count: c.int, #by_ptr clip: Rect, result: ^Rect)    -> bool ---
	GetRectAndLineIntersection      :: proc(#by_ptr rect: Rect, X1, Y1, X2, Y2: ^c.int)                           -> bool ---
	HasRectIntersectionFloat        :: proc(#by_ptr A, B: FRect)                                                  -> bool ---
	GetRectIntersectionFloat        :: proc(#by_ptr A, B: FRect, result: ^FRect)                                  -> bool ---
	GetRectUnionFloat               :: proc(#by_ptr A, B: FRect, result: ^FRect)                                  -> bool ---
	GetRectEnclosingPointsFloat     :: proc(points: [^]FPoint, count: c.int, #by_ptr clip: FRect, result: ^FRect) -> bool ---
	GetRectAndLineIntersectionFloat :: proc(#by_ptr rect: FRect, X1, Y1, X2, Y2: ^f32)                            -> bool ---
}