kc3-lang/kc3/libc3_window/sdl2/vec2.c

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• Hash : f23d563b
  Author : Thomas de Grivel
  Date : 2024-03-24T14:53:08
  

  move libc3/window to libc3_window, shorter build messages and build log for libc3 (see configure)

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• libc3_window/sdl2/vec2.c

• /* c3
   * Copyright 2022-2024 kmx.io <contact@kmx.io>
   *
   * Permission is hereby granted to use this software granted the above
   * copyright notice and this permission paragraph are included in all
   * copies and substantial portions of this software.
   *
   * THIS SOFTWARE IS PROVIDED "AS-IS" WITHOUT ANY GUARANTEE OF
   * PURPOSE AND PERFORMANCE. IN NO EVENT WHATSOEVER SHALL THE
   * AUTHOR BE CONSIDERED LIABLE FOR THE USE AND PERFORMANCE OF
   * THIS SOFTWARE.
   */
  #include <math.h>
  #include <libc3/c3.h>
  #include "vec2.h"
  
  s_vec2 * vec2_init (s_vec2 *p, f32 x, f32 y)
  {
    assert(p);
    p->x = x;
    p->y = y;
    return p;
  }
  
  s_vec2 * vec2_init_copy (s_vec2 *p, const s_vec2 *src)
  {
    assert(p);
    assert(src);
    p->x = src->x;
    p->y = src->y;
    return p;
  }
  
  s_vec2 *
  vec2_init_product (s_vec2 *p, const s_mat3 *m, const s_vec2 *s)
  {
    assert(p);
    assert(m);
    assert(s);
    p->x = s->x * m->xx + s->y * m->xy + m->xz;
    p->y = s->x * m->yx + s->y * m->yy + m->yz;
    return p;
  }
  
  s_vec2 * vec2_init_zero (s_vec2 *p)
  {
    assert(p);
    p->x = 0.0;
    p->y = 0.0;
    return p;
  }
  
  void vec2_delete (s_vec2 *p)
  {
    free(p);
  }
  
  s_vec2 * vec2_new (f32 x, f32 y)
  {
    s_vec2 *p;
    p = calloc(1, sizeof(s_vec2));
    if (! p) {
      err_puts("vec2_new: failed to allocate memory");
      return NULL;
    }
    vec2_init(p, x, y);
    return p;
  }
  
  s_vec2 * vec2_new_copy (const s_vec2 *src)
  {
    s_vec2 *p;
    p = calloc(1, sizeof(s_vec2));
    if (! p) {
      err_puts("vec2_new: failed to allocate memory");
      return NULL;
    }
    vec2_init_copy(p, src);
    return p;
  }
  
  s_vec2 * vec2_new_zero (void)
  {
    s_vec2 *p;
    p = calloc(1, sizeof(s_vec2));
    if (! p) {
      err_puts("vec2_new: failed to allocate memory");
      return NULL;
    }
    vec2_init_zero(p);
    return p;
  }
  

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