Basic.c

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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 */
 
#include "Basic.h"
 
int min_i(int a, int b)
{
  return (a < b) ? a : b;
}
int max_i(int a, int b)
{
  return (b < a) ? a : b;
}
int clamp_i(int val, int min, int max)
{
  return min_i(max_i(val, min), max);
}
 
float min_f(float a, float b)
{
  return (a < b) ? a : b;
}
float max_f(float a, float b)
{
  return (b < a) ? a : b;
}
float clamp_f(float val, float min, float max)
{
  return min_f(max_f(val, min), max);
}
 
void rect_copy(int dst[2][2], int src[2][2])
{
  dst[0][0] = src[0][0], dst[0][1] = src[0][1];
  dst[1][0] = src[1][0], dst[1][1] = src[1][1];
}
int rect_contains_pt(int rect[2][2], int pt[2])
{
  return ((rect[0][0] <= pt[0] && pt[0] <= rect[1][0]) &&
          (rect[0][1] <= pt[1] && pt[1] <= rect[1][1]));
}
int rect_width(int rect[2][2])
{
  return (rect[1][0] - rect[0][0]);
}
int rect_height(int rect[2][2])
{
  return (rect[1][1] - rect[0][1]);
}