56 lines
1.2 KiB
R
56 lines
1.2 KiB
R
#include "qwaq-rect.h"
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Rect
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clipRect (Rect clipRect, Rect rect)
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{
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if (rect.offset.x < clipRect.offset.x) {
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int dist = clipRect.offset.x - rect.offset.x;
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rect.offset.x += dist;
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rect.extent.width -= dist;
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}
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if (rect.offset.y < clipRect.offset.y) {
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int dist = clipRect.offset.y - rect.offset.y;
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rect.offset.y += dist;
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rect.extent.height -= dist;
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}
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if (rect.offset.x + rect.extent.width > clipRect.extent.width) {
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rect.extent.width = clipRect.extent.width - rect.offset.x;
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}
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if (rect.offset.y + rect.extent.height > clipRect.extent.height) {
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rect.extent.height = clipRect.extent.height - rect.offset.y;
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}
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return rect;
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}
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Rect
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makeRect (int xpos, int ypos, int xlen, int ylen)
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{
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Rect rect = {{xpos, ypos}, {xlen, ylen}};
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return rect;
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}
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Point makePoint (int x, int y)
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{
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return {x, y};
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}
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Extent makeExtent (int width, int height)
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{
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return {width, height};
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}
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Extent mergeExtents (Extent a, Extent b)
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{
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return { a.width < b.width ? b.width : a.width,
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a.height < b.height ? b.height : a.height };
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}
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int
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rectContainsPoint (Rect rect, Point point)
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{
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return ((point.x >= rect.offset.x
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&& point.x < rect.offset.x + rect.extent.width)
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&& (point.y >= rect.offset.y
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&& point.y < rect.offset.y + rect.extent.height));
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}
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