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Image.h File Reference
#include <SFML/Graphics/Export.h>
#include <SFML/Graphics/Color.h>
#include <SFML/Graphics/Rect.h>
#include <SFML/Graphics/Types.h>
#include <SFML/System/Buffer.h>
#include <SFML/System/InputStream.h>
#include <SFML/System/Vector2.h>
#include <stddef.h>

Go to the source code of this file.

Functions

sfImagesfImage_create (unsigned int width, unsigned int height)
 Create an image.
 
sfImagesfImage_createFromColor (unsigned int width, unsigned int height, sfColor color)
 Create an image and fill it with a unique color.
 
sfImagesfImage_createFromPixels (unsigned int width, unsigned int height, const sfUint8 *pixels)
 Create an image from an array of pixels.
 
sfImagesfImage_createFromFile (const char *filename)
 Create an image from a file on disk.
 
sfImagesfImage_createFromMemory (const void *data, size_t size)
 Create an image from a file in memory.
 
sfImagesfImage_createFromStream (sfInputStream *stream)
 Create an image from a custom stream.
 
sfImagesfImage_copy (const sfImage *image)
 Copy an existing image.
 
void sfImage_destroy (sfImage *image)
 Destroy an existing image.
 
sfBool sfImage_saveToFile (const sfImage *image, const char *filename)
 Save an image to a file on disk.
 
sfBool sfImage_saveToMemory (const sfImage *image, sfBuffer *output, const char *format)
 Save the image to a buffer in memory.
 
sfVector2u sfImage_getSize (const sfImage *image)
 Return the size of an image.
 
void sfImage_createMaskFromColor (sfImage *image, sfColor color, sfUint8 alpha)
 Create a transparency mask from a specified color-key.
 
void sfImage_copyImage (sfImage *image, const sfImage *source, unsigned int destX, unsigned int destY, sfIntRect sourceRect, sfBool applyAlpha)
 Copy pixels from an image onto another.
 
void sfImage_setPixel (sfImage *image, unsigned int x, unsigned int y, sfColor color)
 Change the color of a pixel in an image.
 
sfColor sfImage_getPixel (const sfImage *image, unsigned int x, unsigned int y)
 Get the color of a pixel in an image.
 
const sfUint8sfImage_getPixelsPtr (const sfImage *image)
 Get a read-only pointer to the array of pixels of an image.
 
void sfImage_flipHorizontally (sfImage *image)
 Flip an image horizontally (left <-> right)
 
void sfImage_flipVertically (sfImage *image)
 Flip an image vertically (top <-> bottom)
 

Function Documentation

◆ sfImage_copy()

sfImage * sfImage_copy ( const sfImage image)

Copy an existing image.

Parameters
imageImage to copy
Returns
Copied object

◆ sfImage_copyImage()

void sfImage_copyImage ( sfImage image,
const sfImage source,
unsigned int  destX,
unsigned int  destY,
sfIntRect  sourceRect,
sfBool  applyAlpha 
)

Copy pixels from an image onto another.

This function does a slow pixel copy and should not be used intensively. It can be used to prepare a complex static image from several others, but if you need this kind of feature in real-time you'd better use sfRenderTexture.

If sourceRect is empty, the whole image is copied. If applyAlpha is set to true, the transparency of source pixels is applied. If it is false, the pixels are copied unchanged with their alpha value.

Parameters
imageImage object
sourceSource image to copy
destXX coordinate of the destination position
destYY coordinate of the destination position
sourceRectSub-rectangle of the source image to copy
applyAlphaShould the copy take in account the source transparency?

◆ sfImage_create()

sfImage * sfImage_create ( unsigned int  width,
unsigned int  height 
)

Create an image.

This image is filled with black pixels.

Parameters
widthWidth of the image
heightHeight of the image
Returns
A new sfImage object

◆ sfImage_createFromColor()

sfImage * sfImage_createFromColor ( unsigned int  width,
unsigned int  height,
sfColor  color 
)

Create an image and fill it with a unique color.

Parameters
widthWidth of the image
heightHeight of the image
colorFill color
Returns
A new sfImage object

◆ sfImage_createFromFile()

sfImage * sfImage_createFromFile ( const char *  filename)

Create an image from a file on disk.

The supported image formats are bmp, png, tga, jpg, gif, psd, hdr and pic. Some format options are not supported, like progressive jpeg. If this function fails, the image is left unchanged.

Parameters
filenamePath of the image file to load
Returns
A new sfImage object, or NULL if it failed

◆ sfImage_createFromMemory()

sfImage * sfImage_createFromMemory ( const void *  data,
size_t  size 
)

Create an image from a file in memory.

The supported image formats are bmp, png, tga, jpg, gif, psd, hdr and pic. Some format options are not supported, like progressive jpeg. If this function fails, the image is left unchanged.

Parameters
dataPointer to the file data in memory
sizeSize of the data to load, in bytes
Returns
A new sfImage object, or NULL if it failed

◆ sfImage_createFromPixels()

sfImage * sfImage_createFromPixels ( unsigned int  width,
unsigned int  height,
const sfUint8 pixels 
)

Create an image from an array of pixels.

The pixel array is assumed to contain 32-bits RGBA pixels, and have the given width and height. If not, this is an undefined behaviour. If pixels is null, an empty image is created.

Parameters
widthWidth of the image
heightHeight of the image
pixelsArray of pixels to copy to the image
Returns
A new sfImage object

◆ sfImage_createFromStream()

sfImage * sfImage_createFromStream ( sfInputStream stream)

Create an image from a custom stream.

The supported image formats are bmp, png, tga, jpg, gif, psd, hdr and pic. Some format options are not supported, like progressive jpeg. If this function fails, the image is left unchanged.

Parameters
streamSource stream to read from
Returns
A new sfImage object, or NULL if it failed

◆ sfImage_createMaskFromColor()

void sfImage_createMaskFromColor ( sfImage image,
sfColor  color,
sfUint8  alpha 
)

Create a transparency mask from a specified color-key.

This function sets the alpha value of every pixel matching the given color to alpha (0 by default), so that they become transparent.

Parameters
imageImage object
colorColor to make transparent
alphaAlpha value to assign to transparent pixels

◆ sfImage_destroy()

void sfImage_destroy ( sfImage image)

Destroy an existing image.

Parameters
imageImage to delete

◆ sfImage_flipHorizontally()

void sfImage_flipHorizontally ( sfImage image)

Flip an image horizontally (left <-> right)

Parameters
imageImage object

◆ sfImage_flipVertically()

void sfImage_flipVertically ( sfImage image)

Flip an image vertically (top <-> bottom)

Parameters
imageImage object

◆ sfImage_getPixel()

sfColor sfImage_getPixel ( const sfImage image,
unsigned int  x,
unsigned int  y 
)

Get the color of a pixel in an image.

This function doesn't check the validity of the pixel coordinates, using out-of-range values will result in an undefined behaviour.

Parameters
imageImage object
xX coordinate of pixel to get
yY coordinate of pixel to get
Returns
Color of the pixel at coordinates (x, y)

◆ sfImage_getPixelsPtr()

const sfUint8 * sfImage_getPixelsPtr ( const sfImage image)

Get a read-only pointer to the array of pixels of an image.

The returned value points to an array of RGBA pixels made of 8 bits integers components. The size of the array is getWidth() * getHeight() * 4. Warning: the returned pointer may become invalid if you modify the image, so you should never store it for too long. If the image is empty, a null pointer is returned.

Parameters
imageImage object
Returns
Read-only pointer to the array of pixels

◆ sfImage_getSize()

sfVector2u sfImage_getSize ( const sfImage image)

Return the size of an image.

Parameters
imageImage object
Returns
Size in pixels

◆ sfImage_saveToFile()

sfBool sfImage_saveToFile ( const sfImage image,
const char *  filename 
)

Save an image to a file on disk.

The format of the image is automatically deduced from the extension. The supported image formats are bmp, png, tga and jpg. The destination file is overwritten if it already exists. This function fails if the image is empty.

Parameters
imageImage object
filenamePath of the file to save
Returns
sfTrue if saving was successful
See also
sfImage_saveToMemory

◆ sfImage_saveToMemory()

sfBool sfImage_saveToMemory ( const sfImage image,
sfBuffer output,
const char *  format 
)

Save the image to a buffer in memory.

The format of the image must be specified. The supported image formats are bmp, png, tga and jpg. This function fails if the image is empty, or if the format was invalid.

Parameters
imageImage object
outputBuffer to fill with encoded data
formatEncoding format to use
Returns
sfTrue if saving was successful
See also
sfImage_saveToFile

◆ sfImage_setPixel()

void sfImage_setPixel ( sfImage image,
unsigned int  x,
unsigned int  y,
sfColor  color 
)

Change the color of a pixel in an image.

This function doesn't check the validity of the pixel coordinates, using out-of-range values will result in an undefined behaviour.

Parameters
imageImage object
xX coordinate of pixel to change
yY coordinate of pixel to change
colorNew color of the pixel