pxCore.h

/*

 pxCore Copyright 2005-2018 John Robinson

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

*/

// pxCore.h

#ifndef PX_CORE_H
#define PX_CORE_H

#include "pxConfig.h"

// TODO eliminate pxError and PX* error codes
typedef int pxError;

#define PX_OK                   0
#define PX_FAIL                 1           // General Failure
#define PX_NOTINITIALIZED       2           // Object requires initialization before use

// Utility Functions

template <typename t> 
inline t pxMin(t a1, t a2)
{
  return (a1 < a2)?a1:a2;
}

template <typename t> 
inline t pxMax(t a1, t a2)
{
  return (a1 > a2)?a1:a2;
}

template <typename t> 
inline t pxClamp(t v, t min, t max)
{
  return pxMin<t>(max, pxMax<t>(min, v));
}

template <typename t> 
inline t pxClamp(t v, t max)
{
  return pxMin<t>(max, pxMax<t>(0, v));
}

template <typename t>
inline t pxAbs(t i)
{
  return (i < 0)?-i:i;
}

#if defined(PX_PLATFORM_WIN)
#include "win/pxConfigNative.h"
#elif defined(PX_PLATFORM_MAC)
#include "mac/pxConfigNative.h"
#elif defined(PX_PLATFORM_X11) || defined(PX_PLATFORM_GENERIC_DFB) || defined (PX_PLATFORM_DFB_NON_X11)
#include "x11/pxConfigNative.h"
#elif defined (PX_PLATFORM_GLUT)
#include "glut/pxConfigNative.h"
#elif defined(PX_PLATFORM_ESSOS)
#include "essos/pxConfigNative.h"
#elif defined(PX_PLATFORM_WAYLAND)
#include "wayland/pxConfigNative.h"
#elif defined(PX_PLATFORM_WAYLAND_EGL)
#include "wayland_egl/pxConfigNative.h"
#elif defined(PX_PLATFORM_GENERIC_EGL)
#include "gles/pxConfigNative.h"
#else
#error "PX_PLATFORM NOT HANDLED"
#endif

#include "pxPixel.h"


#endif