irrlicht/source/Irrlicht/CImage.h

76 lines
2.8 KiB
C
Raw Normal View History

// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#pragma once
#include "IImage.h"
#include "rect.h"
namespace irr
{
namespace video
{
//! check sanity of image dimensions to prevent issues later, for use by CImageLoaders
inline bool checkImageDimensions(u32 width, u32 height)
{
// 4 * 23000 * 23000 is just under S32_MAX
return width <= 23000 && height <= 23000;
}
//! IImage implementation with a lot of special image operations for
//! 16 bit A1R5G5B5/32 Bit A8R8G8B8 images, which are used by the SoftwareDevice.
class CImage : public IImage
{
public:
//! constructor from raw image data
/** \param useForeignMemory: If true, the image will use the data pointer
directly and own it from now on, which means it will also try to delete [] the
data when the image will be destructed. If false, the memory will by copied. */
CImage(ECOLOR_FORMAT format, const core::dimension2d<u32>& size, void* data,
bool ownForeignMemory = true, bool deleteMemory = true);
//! constructor for empty image
CImage(ECOLOR_FORMAT format, const core::dimension2d<u32>& size);
//! returns a pixel
SColor getPixel(u32 x, u32 y) const override;
//! sets a pixel
void setPixel(u32 x, u32 y, const SColor &color, bool blend = false ) override;
//! copies this surface into another, if it has the exact same size and format.
bool copyToNoScaling(void *target, u32 width, u32 height, ECOLOR_FORMAT format, u32 pitch=0) const override;
//! copies this surface into another, scaling it to fit.
void copyToScaling(void* target, u32 width, u32 height, ECOLOR_FORMAT format, u32 pitch=0) override;
//! copies this surface into another, scaling it to fit.
void copyToScaling(IImage* target) override;
//! copies this surface into another
void copyTo(IImage* target, const core::position2d<s32>& pos=core::position2d<s32>(0,0)) override;
//! copies this surface into another
void copyTo(IImage* target, const core::position2d<s32>& pos, const core::rect<s32>& sourceRect, const core::rect<s32>* clipRect=0) override;
//! copies this surface into another, using the alpha mask, an cliprect and a color to add with
virtual void copyToWithAlpha(IImage* target, const core::position2d<s32>& pos,
const core::rect<s32>& sourceRect, const SColor &color,
const core::rect<s32>* clipRect = 0, bool combineAlpha=false) override;
//! copies this surface into another, scaling it to fit, applying a box filter
void copyToScalingBoxFilter(IImage* target, s32 bias = 0, bool blend = false) override;
//! fills the surface with given color
void fill(const SColor &color) override;
private:
inline SColor getPixelBox ( s32 x, s32 y, s32 fx, s32 fy, s32 bias ) const;
};
} // end namespace video
} // end namespace irr