Evas: 3D: Example: Rotating cube

diff --git a/src/examples/evas/Makefile.am b/src/examples/evas/Makefile.am
index 2b1a7c16d1d8daebf9f2ca91f6795d7360303138..f82308ea4a0a598b171f8ede7eaf696596b70065 100644 (file)
--- a/src/examples/evas/Makefile.am
+++ b/src/examples/evas/Makefile.am
@@ -170,6 +170,11 @@ evas_multi_touch_SOURCES = evas-multi-touch.c
 evas_multi_touch_LDADD = $(ECORE_EVAS_COMMON_LDADD)
 evas_multi_touch_CPPFLAGS = $(ECORE_EVAS_COMMON_CPPFLAGS)
 
+EXTRA_PROGRAMS += evas_3d_cube
+evas_3d_cube_SOURCES = evas-3d-cube.c
+evas_3d_cube_LDADD = $(ECORE_EVAS_COMMON_LDADD)
+evas_3d_cube_CPPFLAGS = $(ECORE_EVAS_COMMON_CPPFLAGS)
+
 .edc.edj:
        $(AM_V_EDJ)$(EDJE_CC) $(EDJE_CC_FLAGS) $< $(builddir)/$(@F)
 

diff --git a/src/examples/evas/evas-3d-cube.c b/src/examples/evas/evas-3d-cube.c
new file mode 100644 (file)
index 0000000..fddca28
--- /dev/null
+++ b/src/examples/evas/evas-3d-cube.c
@@ -0,0 +1,260 @@
+#include <Ecore.h>
+#include <Ecore_Evas.h>
+#include <stdio.h>
+#include <math.h>
+#include <Evas_3D.h>
+
+#define  WIDTH          1024
+#define  HEIGHT         1024
+
+typedef struct _Scene_Data
+{
+   Evas_3D_Scene    *scene;
+   Evas_3D_Node     *root_node;
+   Evas_3D_Node     *camera_node;
+   Evas_3D_Node     *light_node;
+   Evas_3D_Node     *mesh_node;
+
+   Evas_3D_Camera   *camera;
+   Evas_3D_Light    *light;
+   Evas_3D_Mesh     *mesh;
+   Evas_3D_Material *material;
+} Scene_Data;
+
+Ecore_Evas       *ecore_evas  = NULL;
+Evas             *evas        = NULL;
+Evas_Object      *background  = NULL;
+Evas_Object      *image       = NULL;
+
+static const float cube_vertices[] =
+{
+   /* Front */
+   -1.0,  1.0,  1.0,     0.0,  0.0,  1.0,     1.0, 0.0, 0.0, 1.0,     0.0,  1.0,
+    1.0,  1.0,  1.0,     0.0,  0.0,  1.0,     1.0, 0.0, 0.0, 1.0,     1.0,  1.0,
+   -1.0, -1.0,  1.0,     0.0,  0.0,  1.0,     1.0, 0.0, 0.0, 1.0,     0.0,  0.0,
+    1.0, -1.0,  1.0,     0.0,  0.0,  1.0,     1.0, 0.0, 0.0, 1.0,     1.0,  0.0,
+
+   /* Back */
+    1.0,  1.0, -1.0,     0.0,  0.0, -1.0,     0.0, 0.0, 1.0, 1.0,     0.0,  1.0,
+   -1.0,  1.0, -1.0,     0.0,  0.0, -1.0,     0.0, 0.0, 1.0, 1.0,     1.0,  1.0,
+    1.0, -1.0, -1.0,     0.0,  0.0, -1.0,     0.0, 0.0, 1.0, 1.0,     0.0,  0.0,
+   -1.0, -1.0, -1.0,     0.0,  0.0, -1.0,     0.0, 0.0, 1.0, 1.0,     1.0,  0.0,
+
+   /* Left */
+   -1.0,  1.0, -1.0,    -1.0,  0.0,  0.0,     0.0, 1.0, 0.0, 1.0,     0.0,  1.0,
+   -1.0,  1.0,  1.0,    -1.0,  0.0,  0.0,     0.0, 1.0, 0.0, 1.0,     1.0,  1.0,
+   -1.0, -1.0, -1.0,    -1.0,  0.0,  0.0,     0.0, 1.0, 0.0, 1.0,     0.0,  0.0,
+   -1.0, -1.0,  1.0,    -1.0,  0.0,  0.0,     0.0, 1.0, 0.0, 1.0,     1.0,  0.0,
+
+   /* Right */
+    1.0,  1.0,  1.0,     1.0,  0.0,  0.0,     1.0, 1.0, 0.0, 1.0,     0.0,  1.0,
+    1.0,  1.0, -1.0,     1.0,  0.0,  0.0,     1.0, 1.0, 0.0, 1.0,     1.0,  1.0,
+    1.0, -1.0,  1.0,     1.0,  0.0,  0.0,     1.0, 1.0, 0.0, 1.0,     0.0,  0.0,
+    1.0, -1.0, -1.0,     1.0,  0.0,  0.0,     1.0, 1.0, 0.0, 1.0,     1.0,  0.0,
+
+   /* Top */
+   -1.0,  1.0, -1.0,     0.0,  1.0,  0.0,     1.0, 0.0, 1.0, 1.0,     0.0,  1.0,
+    1.0,  1.0, -1.0,     0.0,  1.0,  0.0,     1.0, 0.0, 1.0, 1.0,     1.0,  1.0,
+   -1.0,  1.0,  1.0,     0.0,  1.0,  0.0,     1.0, 0.0, 1.0, 1.0,     0.0,  0.0,
+    1.0,  1.0,  1.0,     0.0,  1.0,  0.0,     1.0, 0.0, 1.0, 1.0,     1.0,  0.0,
+
+   /* Bottom */
+    1.0, -1.0, -1.0,     0.0, -1.0,  0.0,     0.0, 1.0, 1.0, 1.0,     0.0,  1.0,
+   -1.0, -1.0, -1.0,     0.0, -1.0,  0.0,     0.0, 1.0, 1.0, 1.0,     1.0,  1.0,
+    1.0, -1.0,  1.0,     0.0, -1.0,  0.0,     0.0, 1.0, 1.0, 1.0,     0.0,  0.0,
+   -1.0, -1.0,  1.0,     0.0, -1.0,  0.0,     0.0, 1.0, 1.0, 1.0,     1.0,  0.0,
+};
+
+static const unsigned short cube_indices[] =
+{
+   /* Front */
+   0,   1,  2,  2,  1,  3,
+
+   /* Back */
+   4,   5,  6,  6,  5,  7,
+
+   /* Left */
+   8,   9, 10, 10,  9, 11,
+
+   /* Right */
+   12, 13, 14, 14, 13, 15,
+
+   /* Top */
+   16, 17, 18, 18, 17, 19,
+
+   /* Bottom */
+   20, 21, 22, 22, 21, 23
+};
+
+static void
+_on_delete(Ecore_Evas *ee EINA_UNUSED)
+{
+   ecore_main_loop_quit();
+}
+
+static void
+_on_canvas_resize(Ecore_Evas *ee)
+{
+   int w, h;
+
+   ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
+
+   evas_object_resize(background, w, h);
+   evas_object_resize(image, w, h);
+   evas_object_move(image, 0, 0);
+}
+
+static Eina_Bool
+_animate_scene(void *data)
+{
+   static float angle = 0.0f;
+   Scene_Data *scene = (Scene_Data *)data;
+
+   angle += 0.5;
+
+   evas_3d_node_orientation_angle_axis_set(scene->mesh_node, angle, 1.0, 1.0, 1.0);
+
+   /* Rotate */
+   if (angle > 360.0)
+     angle -= 360.0f;
+
+   return EINA_TRUE;
+}
+
+static void
+_camera_setup(Scene_Data *data)
+{
+   data->camera = evas_3d_camera_add(evas);
+   evas_3d_camera_projection_perspective_set(data->camera, 60.0, 1.0, 2.0, 50.0);
+
+   data->camera_node = evas_3d_node_add(evas, EVAS_3D_NODE_TYPE_CAMERA);
+   evas_3d_node_camera_set(data->camera_node, data->camera);
+   evas_3d_node_member_add(data->root_node, data->camera_node);
+   evas_3d_node_position_set(data->camera_node, 0.0, 0.0, 10.0);
+   evas_3d_node_look_at_set(data->camera_node, EVAS_3D_SPACE_PARENT, 0.0, 0.0, 0.0,
+                           EVAS_3D_SPACE_PARENT, 0.0, 1.0, 0.0);
+}
+
+static void
+_light_setup(Scene_Data *data)
+{
+   data->light = evas_3d_light_add(evas);
+   evas_3d_light_ambient_set(data->light, 0.2, 0.2, 0.2, 1.0);
+   evas_3d_light_diffuse_set(data->light, 1.0, 1.0, 1.0, 1.0);
+   evas_3d_light_specular_set(data->light, 1.0, 1.0, 1.0, 1.0);
+
+   data->light_node = evas_3d_node_add(evas, EVAS_3D_NODE_TYPE_LIGHT);
+   evas_3d_node_light_set(data->light_node, data->light);
+   evas_3d_node_member_add(data->root_node, data->light_node);
+   evas_3d_node_position_set(data->light_node, 0.0, 0.0, 10.0);
+   evas_3d_node_look_at_set(data->light_node, EVAS_3D_SPACE_PARENT, 0.0, 0.0, 0.0,
+                           EVAS_3D_SPACE_PARENT, 0.0, 1.0, 0.0);
+}
+
+static void
+_mesh_setup(Scene_Data *data)
+{
+   /* Setup material. */
+   data->material = evas_3d_material_add(evas);
+
+   evas_3d_material_enable_set(data->material, EVAS_3D_MATERIAL_AMBIENT, EINA_TRUE);
+   evas_3d_material_enable_set(data->material, EVAS_3D_MATERIAL_DIFFUSE, EINA_TRUE);
+   evas_3d_material_enable_set(data->material, EVAS_3D_MATERIAL_SPECULAR, EINA_TRUE);
+
+   evas_3d_material_color_set(data->material, EVAS_3D_MATERIAL_AMBIENT, 0.2, 0.2, 0.2, 1.0);
+   evas_3d_material_color_set(data->material, EVAS_3D_MATERIAL_DIFFUSE, 0.8, 0.8, 0.8, 1.0);
+   evas_3d_material_color_set(data->material, EVAS_3D_MATERIAL_SPECULAR, 1.0, 1.0, 1.0, 1.0);
+   evas_3d_material_shininess_set(data->material, 100.0);
+
+   /* Setup mesh. */
+   data->mesh = evas_3d_mesh_add(evas);
+   evas_3d_mesh_vertex_count_set(data->mesh, 24);
+   evas_3d_mesh_frame_add(data->mesh, 0);
+
+   evas_3d_mesh_frame_vertex_data_set(data->mesh, 0, EVAS_3D_VERTEX_POSITION,
+                                     12 * sizeof(float), &cube_vertices[ 0]);
+   evas_3d_mesh_frame_vertex_data_set(data->mesh, 0, EVAS_3D_VERTEX_NORMAL,
+                                     12 * sizeof(float), &cube_vertices[ 3]);
+   evas_3d_mesh_frame_vertex_data_set(data->mesh, 0, EVAS_3D_VERTEX_COLOR,
+                                     12 * sizeof(float), &cube_vertices[ 6]);
+   evas_3d_mesh_frame_vertex_data_set(data->mesh, 0, EVAS_3D_VERTEX_TEXCOORD,
+                                     12 * sizeof(float), &cube_vertices[10]);
+
+   evas_3d_mesh_index_data_set(data->mesh, EVAS_3D_INDEX_FORMAT_UNSIGNED_SHORT,
+                               36, &cube_indices[0]);
+   evas_3d_mesh_vertex_assembly_set(data->mesh, EVAS_3D_VERTEX_ASSEMBLY_TRIANGLES);
+
+   evas_3d_mesh_shade_mode_set(data->mesh, EVAS_3D_SHADE_MODE_PHONG);
+
+   evas_3d_mesh_frame_material_set(data->mesh, 0, data->material);
+
+   data->mesh_node = evas_3d_node_add(evas, EVAS_3D_NODE_TYPE_MESH);
+   evas_3d_node_member_add(data->root_node, data->mesh_node);
+   evas_3d_node_mesh_add(data->mesh_node, data->mesh);
+}
+
+static void
+_scene_setup(Scene_Data *data)
+{
+   data->scene = evas_3d_scene_add(evas);
+   evas_3d_scene_size_set(data->scene, WIDTH, HEIGHT);
+   evas_3d_scene_background_color_set(data->scene, 0.0, 0.0, 0.0, 0.0);
+
+   data->root_node = evas_3d_node_add(evas, EVAS_3D_NODE_TYPE_NODE);
+
+   _camera_setup(data);
+   _light_setup(data);
+   _mesh_setup(data);
+
+   evas_3d_scene_root_node_set(data->scene, data->root_node);
+   evas_3d_scene_camera_node_set(data->scene, data->camera_node);
+}
+
+int
+main(void)
+{
+   Scene_Data data;
+
+   if (!ecore_evas_init())
+     return 0;
+
+   ecore_evas = ecore_evas_new(NULL, 10, 10, WIDTH, HEIGHT, NULL);
+
+   if (!ecore_evas)
+     return 0;
+
+   ecore_evas_callback_delete_request_set(ecore_evas, _on_delete);
+   ecore_evas_callback_resize_set(ecore_evas, _on_canvas_resize);
+   ecore_evas_show(ecore_evas);
+
+   evas = ecore_evas_get(ecore_evas);
+
+   _scene_setup(&data);
+
+   /* Add a background rectangle objects. */
+   background = evas_object_rectangle_add(evas);
+   evas_object_color_set(background, 0, 0, 0, 255);
+   evas_object_move(background, 0, 0);
+   evas_object_resize(background, WIDTH, HEIGHT);
+   evas_object_show(background);
+
+   /* Add an image object for 3D scene rendering. */
+   image = evas_object_image_filled_add(evas);
+   evas_object_move(image, 0, 0);
+   evas_object_resize(image, WIDTH, HEIGHT);
+   evas_object_show(image);
+
+   /* Set the image object as render target for 3D scene. */
+   evas_object_image_3d_scene_set(image, data.scene);
+
+   /* Add animation timer callback. */
+   ecore_timer_add(0.016, _animate_scene, &data);
+
+   /* Enter main loop. */
+   ecore_main_loop_begin();
+
+   ecore_evas_free(ecore_evas);
+   ecore_evas_shutdown();
+
+   return 0;
+}