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// 242.cutout -- does a rectangular mask really quickly.
// by r. luke dubois (luke@music.columbia.edu),
// computer music center, columbia university, 2001.
//
// Pd / Framestein port by Olaf Matthes <olaf.matthes@gmx.de>, June 2002
//
// objects and source are provided without warranty of any kind, express or implied.
//
// usage: cutout <x> <y> <width> <height> <flip>
//
#include <stdio.h>
#include <string.h>
#include "plugin.h"
void perform_effect(struct frame f, struct args a)
{
printf("Using cutout as effect does nothing!\n");
}
void perform_copy(struct frame f1, struct frame f2, struct args a)
{
short x, y, w, h, x_c, y_c, w_c, h_c, x_m, y_m, check, flip = 0;
byte pixelsize = f1.pixelformat/8;
pixel16 *pix1_16, *pix2_16;
pixel24 *pix1_24, *pix2_24;
pixel32 *pix1_32, *pix2_32;
char *t;
w = f1.width<f2.width ? f1.width : f2.width;
h = f1.height<f2.height ? f1.height : f2.height;
// get params
if(!a.s) return;
x_c = atoi(a.s);
if(!(t = strstr(a.s, " "))) return;
y_c = atoi(t+1);
if(!(t = strstr(t+1, " "))) return;
w_c = atoi(t+1);
if(!(t = strstr(t+1, " "))) return;
h_c = atoi(t+1);
if(!(t = strstr(t+1, " "))) return;
flip = atoi(t+1);
printf("cutout: x%d y%d w%d h%d - f%d\n", x_c, y_c, w_c, h_c, flip);
x_m = x_c + w_c; // figure out bounds of rectangle.
y_m = y_c + h_c;
switch(f1.pixelformat)
{
case 16:
for(y = 0; y < h; y++)
{
pix1_16 = scanline16(f1, y);
pix2_16 = scanline16(f2, y);
for(x = 0; x < w; x++)
{
if((x >= x_c) && (x <= x_m) && (y >= y_c) && (y <= y_m))
{
check = 0;
}
else
{
check = 1;
} // occlude or don't occlude
// sort out which image input goes over and which goes under
if(flip)check = !check;
if(!check)
{
pix2_16[x] = pix1_16[x]; // set output1
}
}
}
break;
case 24:
for(y = 0; y < h; y++)
{
pix1_24 = scanline24(f1, y);
pix2_24 = scanline24(f2, y);
for(x = 0; x < w; x++)
{
if((x >= x_c) && (x <= x_m) && (y >= y_c) && (y <= y_m))
{
check = 0;
}
else
{
check = 1;
} // occlude or don't occlude
// sort out which image input goes over and which goes under
if(flip)check = !check;
if(!check)
{
pix2_24[x] = pix1_24[x]; // set output1
}
}
}
break;
case 32:
for(y = 0; y < h; y++)
{
pix1_32 = scanline32(f1, y);
pix2_32 = scanline32(f2, y);
for(x = 0; x < w; x++)
{
if((x >= x_c) && (x <= x_m) && (y >= y_c) && (y <= y_m))
{
check = 0;
}
else
{
check = 1;
} // occlude or don't occlude
// sort out which image input goes over and which goes under
if(flip)check = !check;
if(!check)
{
pix2_32[x] = pix1_32[x]; // set output1
}
}
}
break;
}
}
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