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#include <gegl.h>
#include <glib/gprintf.h>
gint
main (gint argc,
gchar **argv)
{
gegl_init (&argc, &argv); /* initialize the GEGL library */
/* license for this application, needed by fractal-explorer */
g_object_set (gegl_config (),
"application-license", "GPL3",
NULL);
{
/* instantiate a graph */
GeglNode *gegl = gegl_node_new ();
/*
This is the graph we're going to construct:
.-----------.
| display |
`-----------'
|
.--------.
| crop |
`--------'
|
.----------------------.
| motion-blur-linear |
`----------------------'
|
.------------------.
| fractal-explorer |
`------------------'
*/
/*< The image nodes representing operations we want to perform */
GeglNode *display = gegl_node_create_child (gegl, "gegl:display");
GeglNode *crop = gegl_node_new_child (gegl,
"operation", "gegl:crop",
"width", 512.0,
"height", 384.0,
NULL);
GeglNode *pixelize = gegl_node_new_child (gegl,
"operation", "gegl:pixelize",
"norm", 1,
"ratio_x", 0.4,
"ratio_y", 0.4,
NULL);
GeglNode *mandelbrot = gegl_node_new_child (gegl,
"operation", "gegl:fractal-explorer",
"shiftx", -256.0,
"fractaltype", 1,
"redmode", 2,
"greenmode", 2,
"bluemode", 2,
"redinvert", TRUE,
"greeninvert", TRUE,
"blueinvert", TRUE,
NULL);
gegl_node_link_many (mandelbrot, pixelize, crop, display, NULL);
/* request that the save node is processed, all dependencies will
* be processed as well
*/
{
gint frame;
gint frames = 200;
for (frame=0; frame<frames; frame++)
{
gdouble t = frame * 1.0/frames;
#define INTERPOLATE(min,max) ((max)*(t)+(min)*(1.0-t))
gdouble shiftx = INTERPOLATE(-256.0, -512.0);
gdouble shifty = INTERPOLATE(0.0, -256.0);
gdouble zoom = INTERPOLATE(300.0, 400.0);
gegl_node_set (mandelbrot, "shiftx", shiftx,
"shifty", shifty,
"zoom", zoom,
NULL);
gegl_node_process (display);
}
}
/* free resources used by the graph and the nodes it owns */
g_object_unref (gegl);
}
/* free resources globally used by GEGL */
gegl_exit ();
return 0;
}
|
