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5.8 Changing the color of a pixel
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You can modify the colors of an image with :

C++ : TCODColor TCODImage::putPixel(int x, int y, const TCODColor col)
C   : void TCOD_image_put_pixel(TCOD_image_t image,int x, int y,TCOD_color_t col)
Py  : image_put_pixel(image,x, y,col)

Parameter	Description
image	In the C version, the image handler, obtained with the load function.
x,y	The pixel coordinates inside the image. 0 <= x < width 0 <= y < height
col	The new color of the pixel.

Example :

C++ : TCODImage *pix = new TCODImage(80,50);
      pix->putPixel(40,25,TCODColor::white);
C   : TCOD_image_t pix = TCOD_image_new(80,50);
      TCOD_image_put_pixel(pix,40,25,TCOD_white);
Py  : pix = libtcod.image_new(80,50)
      libtcod.image_put_pixel(pix,40,25,libtcod.white)

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