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/*******************************************************************************
* imageutil.h
*
* This module contains all defines, typedefs, and prototypes for imageutil.cpp.
*
* ---------------------------------------------------------------------------
* Persistence of Vision Ray Tracer ('POV-Ray') version 3.7.
* Copyright 1991-2013 Persistence of Vision Raytracer Pty. Ltd.
*
* POV-Ray is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* POV-Ray 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* ---------------------------------------------------------------------------
* POV-Ray is based on the popular DKB raytracer version 2.12.
* DKBTrace was originally written by David K. Buck.
* DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
* ---------------------------------------------------------------------------
* $File: //depot/public/povray/3.x/source/backend/support/imageutil.h $
* $Revision: #1 $
* $Change: 6069 $
* $DateTime: 2013/11/06 11:59:40 $
* $Author: chrisc $
*******************************************************************************/
#ifndef IMAGE_H
#define IMAGE_H
#include "base/image/image.h"
namespace pov
{
using namespace pov_base;
/*****************************************************************************
* Global preprocessor defines
******************************************************************************/
// Image/Bump Map projection types.
enum
{
PLANAR_MAP = 0,
SPHERICAL_MAP = 1,
CYLINDRICAL_MAP = 2,
PARABOLIC_MAP = 3,
HYPERBOLIC_MAP = 4,
TORUS_MAP = 5,
PIRIFORM_MAP = 6,
OLD_MAP = 7
};
// Bit map interpolation types.
enum
{
// NO_INTERPOLATION = 0, // already in pattern.h
NEAREST_NEIGHBOR = 1, // currently not supported; would be essentially the same as NO_INTERPOLATION
BILINEAR = 2,
BICUBIC = 3,
NORMALIZED_DIST = 4
};
enum
{
USE_NONE = 0,
USE_COLOUR = 1,
USE_INDEX = 2,
USE_ALPHA = 3
};
class ImageData
{
public:
int References; // Keeps track of number of pointers to this structure
int Map_Type;
int Interpolation_Type;
bool Once_Flag;
char Use;
VECTOR Gradient;
int iwidth, iheight;
SNGL width, height;
UV_VECT Offset;
DBL AllFilter, AllTransmit;
void *Object;
Image *data;
// it would have been a lot cleaner if POV_VIDCAP_IMPL was a subclass of pov::Image,
// since we could just assign it to data above and the following would not be needed.
// however at this point pov::Image doesn't allow the default constructor to be used,
// and we don't know our capture size or data type until after we talk to the hardware.
#ifdef POV_VIDCAP_IMPL
POV_VIDCAP_IMPL *VidCap;
#endif
};
class Parser;
class SceneData;
DBL image_pattern(const VECTOR EPoint, const TPATTERN *TPattern);
bool image_map(const VECTOR EPoint, const PIGMENT *Pigment, Colour& colour);
TEXTURE *material_map(const VECTOR IPoint, const TEXTURE *Texture);
void bump_map(const VECTOR EPoint, const TNORMAL *Tnormal, VECTOR normal);
HF_VAL image_height_at(const ImageData *image, int x, int y);
bool is_image_opaque(const ImageData *image);
ImageData *Copy_Image(ImageData *old);
ImageData *Create_Image(void);
void Destroy_Image(ImageData *image);
Image *Read_Image(Parser *p, shared_ptr<SceneData>& sd, int filetype, const UCS2 *filename, const Image::ReadOptions& options);
}
#endif
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