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37 lines
834 B
37 lines
834 B
7 years ago
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#include <limits.h>
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#include <stdlib.h>
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#include <math.h>
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#include <wlr/types/wlr_geometry.h>
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static double get_distance(double x1, double y1, double x2, double y2) {
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double distance;
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distance = sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
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return distance;
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}
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void wlr_geometry_closest_boundary(struct wlr_geometry *geo, double x, double y,
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int *dest_x, int *dest_y, double *distance) {
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// find the closest x point
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if (x < geo->x) {
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*dest_x = geo->x;
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} else if (x > geo->x + geo->width) {
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*dest_x = geo->x + geo->width;
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} else {
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*dest_x = x;
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}
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// find closest y point
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if (y < geo->y) {
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*dest_y = geo->y;
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} else if (y > geo->y + geo->height) {
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*dest_y = geo->y + geo->height;
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} else {
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*dest_y = y;
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}
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// calculate distance
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if (distance) {
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*distance = get_distance(*dest_x, *dest_y, x, y);
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}
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}
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