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#include "pluginst.h"
char evalstr[]="Fancy lines";
/* input parameters
image is the image object.
*/
unsigned char
static
saturate(int in) {
if (in>255) { return 255; }
else if (in>0) return in;
return 0;
}
void
flines(void *INP) {
i_img *im;
i_color vl;
int x,y;
if ( !getOBJ("image","Imager::ImgRaw",&im) ) {
fprintf(stderr,"Error: image is missing\n");
return;
}
fprintf(stderr, "flines: parameters: (im %p)\n",im);
fprintf(stderr, "flines: image info:\n size (%d,%d)\n channels (%d)\n",
im->xsize,im->ysize,im->channels);
for(y = 0; y < im->ysize; y ++) {
for(x = 0; x < im->xsize; x ++ ) {
i_gpix(im,x,y,&vl);
if (!(y%2)) {
float yf = y/(float)im->ysize;
float mf = 1.2-0.8*yf;
vl.rgb.r = saturate(vl.rgb.r*mf);
vl.rgb.g = saturate(vl.rgb.g*mf);
vl.rgb.b = saturate(vl.rgb.b*mf);
} else {
float yf = (im->ysize-y)/(float)im->ysize;
float mf = 1.2-0.8*yf;
vl.rgb.r = saturate(vl.rgb.r*mf);
vl.rgb.g = saturate(vl.rgb.g*mf);
vl.rgb.b = saturate(vl.rgb.b*mf);
}
i_ppix(im,x,y,&vl);
}
}
}
func_ptr function_list[]={
{
"flines",
flines,
"callseq => ['image'], \
callsub => sub { my %hsh=@_; DSO_call($DSO_handle,0,\\%hsh); } \
"
},
{NULL,NULL,NULL}};
/* Remember to double backslash backslashes within Double quotes in C */
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