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// 242.eclipse02 -- does meta-imaging on two input images.
// by r. luke dubois (luke@music.columbia.edu),
// computer music center, columbia university, 2001.
// grid quantization algorithm massively improved by jeremy bernstein, bootsquadresearch.
//
// 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: eclipse02 <red> <green> <blue> <rows> <columns>
//
#include <stdio.h>
#include <string.h>
#include "plugin.h"
// the process image routines work like this:
//
// two pointers (src and src2) access the pixels in the input image
// src controls the output of the smaller grids, src2 controls the tinting from
// the upper-left corner of the point in the image that the grid is supposed to represent.
//
// the grid dimensions are computed by the size of the input image and are used to define
// the size of each pixel in the grid (which is why some row and columns combinations
// leave orphaned pixels on the edges).
// the loop goes like this:
//
// do each row {
// do each column {
// get the 'tint pixel' for that frame;
//
// do the height within each meta-frame {
// do the width within each meta-frame {
// output the pixels for each frame, tinting it;
// }
// }
// }
// }
//
//
void perform_effect(struct frame f, struct args a) // color tints color
{
printf("Using eclipse02 as effect does nothing!\n");
}
void perform_copy(struct frame f1, struct frame f2, struct args a)
{
short i, i1, j, j1, r, c, src1[2], w, h;
short rows, columns, rowstep, colstep, rowoffset, coloffset;
byte red, green, blue, check, r1, g1, b1;
byte bits = f1.pixelformat/8;
byte redpix, greenpix, bluepix; // the color values
pixel16 *pix2_16, *pix1_16;
pixel24 *pix2_24, *pix1_24;
pixel32 *pix2_32, *pix1_32;
char *t;
w = f1.width<f2.width ? f1.width : f2.width;
h = f1.height<f2.height ? f1.height : f2.height;
// get r g b and fuzzy params
if(!a.s) return;
red = atoi(a.s);
if(!(t = strstr(a.s, " "))) return;
green = atoi(t+1);
if(!(t = strstr(t+1, " "))) return;
blue = atoi(t+1);
if(!(t = strstr(t+1, " "))) return;
rows = atoi(t+1);
if(!(t = strstr(t+1, " "))) return;
columns = atoi(t+1);
rowstep = (h / rows) + .5;
colstep = (w / columns) + .5;
// printf("red is %ld green is %ld blue is %ld", red, green, blue);
if ( rows > (h * .1) )
rowoffset = rows - (h * .1);
else
rowoffset = 1;
if ( columns > (w * .1) )
coloffset = columns - (w * .1);
else
coloffset = 1;
for(r = 0; r <= ( rows + rowoffset ); r++ )
{
for(i = 0, i1 = ( r * rowstep ); i < h; i += rows, i1++)
{
for( c = 0; c <= columns + coloffset; c++ )
{
switch(f1.pixelformat)
{
case 16:
src1[0] = c * colstep;
src1[1] = r * rowstep;
pix1_16 = scanline16(f1, src1[1]);
r1 = r16(pix1_16[src1[0]]);
g1 = g16(pix1_16[src1[0]]);
b1 = b16(pix1_16[src1[0]]);
for(j = 0, j1 = c * colstep; j < w; j += columns, j1++)
{
if ( j1 >= w )
goto dink;
if ( i1 >= h )
goto yoink;
pix2_16 = scanline16(f2, i1);
redpix = r16(pix2_16[j1]) + r1 + red;
greenpix = g16(pix2_16[j1]) + g1 + green;
bluepix = b16(pix2_16[j1]) + b1 + blue;
pix2_16[j1] = rgbtocolor16(redpix, greenpix, bluepix);
}
break;
case 24:
src1[0] = c * colstep;
src1[1] = r * rowstep;
pix1_24 = scanline24(f1, src1[1]);
r1 = r24(pix1_24[src1[0]]);
g1 = g24(pix1_24[src1[0]]);
b1 = b24(pix1_24[src1[0]]);
for(j = 0, j1 = c * colstep; j < w; j += columns, j1++)
{
if ( j1 >= w )
goto dink;
if ( i1 >= h )
goto yoink;
pix2_24 = scanline24(f2, i1);
redpix = r24(pix2_24[j1]) + r1 + red;
greenpix = g24(pix2_24[j1]) + g1 + green;
bluepix = b24(pix2_24[j1]) + b1 + blue;
pix2_24[j1] = rgbtocolor24(redpix, greenpix, bluepix);
}
break;
case 32:
src1[0] = c * colstep;
src1[1] = r * rowstep;
pix1_32 = scanline32(f1, src1[1]);
r1 = r32(pix1_32[src1[0]]);
g1 = g32(pix1_32[src1[0]]);
b1 = b32(pix1_32[src1[0]]);
for(j = 0, j1 = c * colstep; j < w; j += columns, j1++)
{
if ( j1 >= w )
goto dink;
if ( i1 >= h )
goto yoink;
pix2_32 = scanline32(f2, i1);
redpix = r32(pix2_32[j1]) + r1 + red;
greenpix = g32(pix2_32[j1]) + g1 + green;
bluepix = b32(pix2_32[j1]) + b1 + blue;
pix2_32[j1] = rgbtocolor32(redpix, greenpix, bluepix);
}
break;
}
}
dink:
;
}
}
yoink:
;
}
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