97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
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#pragma once
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#include <graphene.h>
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static inline void
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gsk_rect_init (graphene_rect_t *r,
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float x,
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float y,
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float width,
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float height)
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{
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r->origin.x = x;
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r->origin.y = y;
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r->size.width = width;
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r->size.height = height;
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}
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static inline void
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gsk_rect_init_from_rect (graphene_rect_t *r,
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const graphene_rect_t *r1)
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{
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gsk_rect_init (r, r1->origin.x, r1->origin.y, r1->size.width, r1->size.height);
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}
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static inline gboolean G_GNUC_PURE
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gsk_rect_contains_rect (const graphene_rect_t *r1,
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const graphene_rect_t *r2)
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{
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return r2->origin.x >= r1->origin.x &&
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(r2->origin.x + r2->size.width) <= (r1->origin.x + r1->size.width) &&
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r2->origin.y >= r1->origin.y &&
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(r2->origin.y + r2->size.height) <= (r1->origin.y + r1->size.height);
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}
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static inline gboolean G_GNUC_PURE
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gsk_rect_intersects (const graphene_rect_t *r1,
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const graphene_rect_t *r2)
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{
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float x1, y1, x2, y2;
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/* Assume both rects are already normalized, as they usually are */
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x1 = MAX (r1->origin.x, r2->origin.x);
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y1 = MAX (r1->origin.y, r2->origin.y);
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x2 = MIN (r1->origin.x + r1->size.width, r2->origin.x + r2->size.width);
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y2 = MIN (r1->origin.y + r1->size.height, r2->origin.y + r2->size.height);
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if (x1 >= x2 || y1 >= y2)
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return FALSE;
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else
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return TRUE;
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}
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static inline gboolean
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gsk_rect_intersection (const graphene_rect_t *r1,
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const graphene_rect_t *r2,
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graphene_rect_t *res)
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{
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float x1, y1, x2, y2;
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/* Assume both rects are already normalized, as they usually are */
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x1 = MAX (r1->origin.x, r2->origin.x);
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y1 = MAX (r1->origin.y, r2->origin.y);
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x2 = MIN (r1->origin.x + r1->size.width, r2->origin.x + r2->size.width);
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y2 = MIN (r1->origin.y + r1->size.height, r2->origin.y + r2->size.height);
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if (x1 >= x2 || y1 >= y2)
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{
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gsk_rect_init (res, 0.f, 0.f, 0.f, 0.f);
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return FALSE;
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}
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else
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{
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gsk_rect_init (res, x1, y1, x2 - x1, y2 - y1);
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return TRUE;
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}
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}
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static inline void
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gsk_rect_to_float (const graphene_rect_t *rect,
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float values[4])
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{
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values[0] = rect->origin.x;
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values[1] = rect->origin.y;
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values[2] = rect->size.width;
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values[3] = rect->size.height;
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}
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static inline gboolean
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gsk_rect_equal (const graphene_rect_t *r1,
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const graphene_rect_t *r2)
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{
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return r1->origin.x == r2->origin.x &&
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r1->origin.y == r2->origin.y &&
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r1->size.width == r2->size.width &&
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r1->size.height == r2->size.height;
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}
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