92 lines
1.9 KiB
C
92 lines
1.9 KiB
C
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#include "undar.h"
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typedef struct Point Point;
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struct Point {
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unsigned int x;
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unsigned int y;
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};
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Point *
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Point_new(Arena *a, unsigned int x, unsigned int y)
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{
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Point *this = (Point *)aalloc(a, sizeof(Point));
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this->x = x;
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this->y = y;
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return this;
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}
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char*
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Point_toS(Arena *a, Point *this)
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{
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unsigned int ckpt = a->count;
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char *s = (char*)&a->tape[a->count];
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int len = sprintf(s, "[x:%d, y:%d]",
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this->x,
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this->y);
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s[len] = '\0';
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a->count += len + 1;
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ARENA_RETURN_ARRAY(a, ckpt, s, char, len + 1);
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}
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typedef struct Rect Rect;
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struct Rect {
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Point top_left;
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Point bottom_right;
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unsigned int width;
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unsigned int height;
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};
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Rect *
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Rect_new(Arena *a, Point *tl, Point *br, unsigned int width, unsigned int height)
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{
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Rect *this = (Rect *)aalloc(a, sizeof(Rect));
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memcpy(&this->top_left, tl, sizeof(Point));
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memcpy(&this->bottom_right, br, sizeof(Point));
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this->width = width;
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this->height = height;
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return this;
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}
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char*
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Rect_toS(Arena *a, Rect *this)
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{
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unsigned int ckpt = a->count;
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char *s1 = Point_toS(a, &this->top_left);
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char *s2 = Point_toS(a, &this->bottom_right);
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char *s = (char*)&a->tape[a->count];
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int len = sprintf(s, "[top_left: %s, bottom_right: %s, width:%d, height:%d]",
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s1,
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s2,
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this->width,
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this->height);
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s[len] = '\0';
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a->count += len + 1;
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ARENA_RETURN_ARRAY(a, ckpt, s, char, len + 1);
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}
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Rect *
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create_geometry(Arena *a)
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{
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unsigned int ckpt = a->count;
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Rect *final_rect;
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Point *temp_tl;
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Point *temp_br;
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temp_tl = Point_new(a, 10, 20);
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temp_br = Point_new(a, 100, 200);
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final_rect = Rect_new(a, temp_tl, temp_br, 90, 180);
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ARENA_RETURN(a, ckpt, final_rect, Rect);
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}
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int main() {
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unsigned char tape[64000];
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Arena a = {tape, 0, 64000};
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Rect *r = create_geometry(&a);
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printf("%s\n", Rect_toS(&a, r));
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return 0;
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}
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