Difference between revisions of "Targa.c"
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// Default Targa image header | // Default Targa image header | ||
| − | typedef struct | + | typedef struct { |
char idlength; | char idlength; | ||
char colourmaptype; | char colourmaptype; | ||
| Line 16: | Line 16: | ||
char imagedescriptor; | char imagedescriptor; | ||
} targaHeader; | } targaHeader; | ||
| − | |||
char* image = targa( 100, 200 ); | char* image = targa( 100, 200 ); | ||
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// Create a new targa image in memory | // Create a new targa image in memory | ||
char* targa(short int width, height) { | char* targa(short int width, height) { | ||
| − | targaHeader* image = malloc( | + | targaHeader* image; |
| + | image = malloc(sizeOf(targaHeader)+width*height*4); | ||
image = {0,0,0,0,0,0,0,0,width,height,8,' '}; | image = {0,0,0,0,0,0,0,0,width,height,8,' '}; | ||
return (char*)ℑ | return (char*)ℑ | ||
| Line 32: | Line 32: | ||
void getPixel(char* image, short int x, y, int colour) { | void getPixel(char* image, short int x, y, int colour) { | ||
targaHeader* header = (targaHeader*)image; | targaHeader* header = (targaHeader*)image; | ||
| − | char* addr = image+ | + | char* addr = image+sizeOf(header)+4*(x+header->width*y); |
return *addr; | return *addr; | ||
} | } | ||
Revision as of 10:20, 3 July 2006
main() {
// Default Targa image header typedef struct { char idlength; char colourmaptype; char datatypecode; short int colourmaporigin; short int colourmaplength; char colourmapdepth; short int x_origin; short int y_origin; short width; short height; char bitsperpixel; char imagedescriptor; } targaHeader;
char* image = targa( 100, 200 ); fillRect( image, 10, 20, 30, 40, 0xff0000ff );
// Create a new targa image in memory char* targa(short int width, height) { targaHeader* image; image = malloc(sizeOf(targaHeader)+width*height*4); image = {0,0,0,0,0,0,0,0,width,height,8,' '}; return (char*)ℑ }
void getPixel(char* image, short int x, y, int colour) { targaHeader* header = (targaHeader*)image; char* addr = image+sizeOf(header)+4*(x+header->width*y); return *addr; }
void setPixel(char* image, short int x, y, int colour) { }
void fillRect( char* image, short int x1,y1,x2,y2, int colour) { int x,y; for (y=y1; y<y2; y++) for (x=x1; x<x2; x++) setPixel(image,x,y,colour); } }
