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8bdb98736d
* clutter/cogl/gles/cogl.c: * clutter/cogl/gl/cogl.c: The clip planes are now set using the inverse projection matrix as the modelview matrix so that they can be specified in screen coordinates. * clutter/cogl/gles/cogl-context.h (CoglContext): * clutter/cogl/gl/cogl-context.h (CoglContext): Added a member to cache the inverse projection matrix * clutter/clutter-fixed.h: Added a constant for converting from radians to degrees. * clutter/clutter-fixed.c (clutter_atani, clutter_atan2i): Added fixed-point versions of atan and atan2. * tests/test-clip.c: Added a test for clipping with various rotations and depths. * tests/Makefile.am (noinst_PROGRAMS): Added test-clip
129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
#include <clutter/clutter.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <math.h>
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#include <stdlib.h>
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#include <string.h>
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#define TL_SCALE 5.0f
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typedef struct _CallbackData CallbackData;
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struct _CallbackData
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{
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ClutterActor *stage, *group, *rect, *hand;
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};
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static void
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on_new_frame (ClutterTimeline *tl, int frame_num, CallbackData *data)
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{
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int i;
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int stage_width = clutter_actor_get_width (data->stage);
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int stage_height = clutter_actor_get_height (data->stage);
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gdouble progress = clutter_timeline_get_progress (tl);
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gdouble angle = progress * 2 * M_PI * TL_SCALE;
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gdouble rotation[3];
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gdouble xpos = stage_width * 0.45 * sin (angle) + stage_width / 8;
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gdouble ypos = stage_height * 0.45 * sin (angle) + stage_height / 8;
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gdouble zpos = stage_width * cos (angle) - stage_width / 2;
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clutter_actor_set_position (data->hand, xpos, ypos);
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clutter_actor_set_depth (data->hand, zpos);
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clutter_actor_set_rotation (data->hand, CLUTTER_Y_AXIS,
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angle / M_PI * 180.0 * 3,
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clutter_actor_get_width (data->hand) / 2,
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clutter_actor_get_height (data->hand) / 2,
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0);
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memset (rotation, 0, sizeof (rotation));
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if (progress < 1 / 3.0)
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rotation[2] = 360 * progress * 3;
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else if (progress < 2 / 3.0)
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rotation[1] = 360 * progress * 3;
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else
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rotation[0] = 360 * progress * 3;
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for (i = 0; i < 3; i++)
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{
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clutter_actor_set_rotation (data->group, i,
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rotation[i],
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clutter_actor_get_width (data->rect) / 2,
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clutter_actor_get_height (data->rect) / 2,
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0);
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clutter_actor_set_rotation (data->rect, i,
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rotation[i],
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clutter_actor_get_width (data->rect) / 2,
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clutter_actor_get_height (data->rect) / 2,
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0);
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}
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}
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int
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main (int argc, char **argv)
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{
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ClutterGeometry geom;
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ClutterTimeline *tl;
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ClutterColor blue = { 0x40, 0x40, 0xff, 0xff };
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CallbackData data;
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ClutterActor *other_hand;
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int x, y;
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clutter_init (&argc, &argv);
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data.stage = clutter_stage_get_default ();
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data.group = clutter_group_new ();
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clutter_actor_get_geometry (data.stage, &geom);
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geom.x = geom.width / 4;
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geom.y = geom.height / 4;
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geom.width /= 2;
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geom.height /= 2;
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clutter_actor_set_geometry (data.group, &geom);
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data.rect = clutter_rectangle_new_with_color (&blue);
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clutter_actor_set_geometry (data.rect, &geom);
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clutter_container_add (CLUTTER_CONTAINER (data.stage), data.rect, NULL);
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clutter_container_add (CLUTTER_CONTAINER (data.stage), data.group, NULL);
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clutter_actor_set_clip (data.group, 0, 0, geom.width, geom.height);
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data.hand = clutter_texture_new_from_file ("redhand.png", NULL);
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if (data.hand == NULL)
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{
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g_critical ("pixbuf loading failed");
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exit (1);
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}
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clutter_container_add (CLUTTER_CONTAINER (data.group), data.hand, NULL);
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/* Add a hand at each of the four corners of the group */
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for (y = 0; y < 2; y++)
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for (x = 0; x < 2; x++)
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{
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other_hand = clutter_clone_texture_new (CLUTTER_TEXTURE (data.hand));
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clutter_actor_set_anchor_point_from_gravity
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(other_hand, CLUTTER_GRAVITY_CENTER);
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clutter_actor_set_position (other_hand,
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x * geom.width,
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y * geom.height);
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clutter_container_add (CLUTTER_CONTAINER (data.group),
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other_hand, NULL);
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}
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clutter_actor_raise_top (data.hand);
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tl = clutter_timeline_new (360 * TL_SCALE, 60);
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clutter_timeline_start (tl);
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clutter_timeline_set_loop (tl, TRUE);
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g_signal_connect (tl, "new-frame", G_CALLBACK (on_new_frame), &data);
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clutter_actor_show (data.stage);
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clutter_main ();
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return 0;
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}
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