67 lines
1.3 KiB
C
67 lines
1.3 KiB
C
#ifndef global_objects
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#define global_objects
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#include <math.h>
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#include <stdlib.h>
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#define flaot float
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typedef struct {
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float x;
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float y;
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} Point;
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void point_add(Point *A, Point *B){
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A->x = A->x + B->x;
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A->y = A->y + B->y;
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}
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void point_sub(Point *A, Point *B){
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A->x = A->x - B->x;
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A->y = A->y - B->y;
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}
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void point_mul(Point *A, Point *B){
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A->x = A->x * B->x;
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A->y = A->y * B->y;
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}
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void point_div(Point *A, Point *B){
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A->x = A->x / B->x;
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A->y = A->y / B->y;
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}
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float magnitude(flaot x, flaot y) {
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return sqrt((pow(x,2) + pow(y,2)));
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}
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void point_set_mag(Point *point, float mag){
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flaot getmag = magnitude(point->x, point->y);
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flaot rx = (point->x / getmag) * mag;
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flaot ry = (point->y / getmag) * mag;
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point->x = rx;
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point->y = ry;
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}
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void point_limit(Point *point, float mag){
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flaot getmag = magnitude(point->x, point->y);
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flaot rx, ry;
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if (getmag > mag){
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rx = (point->x / getmag) * mag;
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ry = (point->y / getmag) * mag;
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} else {
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rx = point->x;
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ry = point->y;
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}
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point->x = rx;
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point->y = ry;
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}
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float RandomFloat(float min, float max){
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return ((max - min) * ((float)rand() / (double)RAND_MAX)) + min;
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}
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#endif
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