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/* See LICENSE file for copyright and license details. */
#include "common.h"
USAGE("[-r | -s] plane-stream")
static int level = 1;
#define PROCESS(TYPE, SUFFIX)\
static void\
process_##SUFFIX(struct stream *left, struct stream *right, size_t n)\
{\
size_t i;\
TYPE *lx, *ly, *lz, *la, rx, ry, rz, ra, x, y, z, a, norm;\
for (i = 0; i < n; i += 4 * sizeof(TYPE)) {\
lx = ((TYPE *)(left->buf + i)) + 0, rx = ((TYPE *)(right->buf + i))[0];\
ly = ((TYPE *)(left->buf + i)) + 1, ry = ((TYPE *)(right->buf + i))[1];\
lz = ((TYPE *)(left->buf + i)) + 2, rz = ((TYPE *)(right->buf + i))[2];\
la = ((TYPE *)(left->buf + i)) + 3, ra = ((TYPE *)(right->buf + i))[3];\
norm = rx * rx + ry * ry + rz * rz + ra * ra;\
norm = sqrt(norm);\
x = y = z = a = *lx * rx + *ly * ry + *lz * rz + *la * ra;\
if (level) {\
x *= rx;\
y *= ry;\
z *= rz;\
a *= rz;\
if (level > 1) {\
x = *lx - x;\
y = *ly - y;\
z = *lz - z;\
a = *la - a;\
}\
}\
*lx = x;\
*ly = y;\
*lz = z;\
*la = a;\
}\
}
PROCESS(double, lf)
PROCESS(float, f)
int
main(int argc, char *argv[])
{
struct stream left, right;
void (*process)(struct stream *left, struct stream *right, size_t n);
ARGBEGIN {
case 'r':
if (level == 0)
usage();
level = 2;
break;
case 's':
if (level == 2)
usage();
level = 0;
break;
default:
usage();
} ARGEND;
if (argc != 1)
usage();
eopen_stream(&left, NULL);
eopen_stream(&right, argv[0]);
if (!strcmp(left.pixfmt, "xyza"))
process = process_lf;
else if (!strcmp(left.pixfmt, "xyza f"))
process = process_f;
else
eprintf("pixel format %s is not supported, try xyza\n", left.pixfmt);
fprint_stream_head(stdout, &left);
efflush(stdout, "<stdout>");
process_two_streams(&left, &right, STDOUT_FILENO, "<stdout>", process);
return 0;
}
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