313 lines
9.6 KiB
C
313 lines
9.6 KiB
C
/*
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* This example illustrating use of shadows in the scene.
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*
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* @see evas_3d_scene_shadows_enable_set(Eina_Bool _shadows_enabled)
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*
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* Compile with "gcc -o evas-3d-shadows evas-3d-shadows.c `pkg-config --libs --cflags efl evas ecore ecore-evas eo` -lm"
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*/
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#define EFL_EO_API_SUPPORT
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#define EFL_BETA_API_SUPPORT
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#include <Eo.h>
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#include <Evas.h>
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#include <Ecore.h>
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#include <Ecore_Evas.h>
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#include <math.h>
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#define WIDTH 1024
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#define HEIGHT 1024
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Ecore_Evas *ecore_evas = NULL;
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Evas *evas = NULL;
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Eo *background = NULL;
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Eo *image = NULL;
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Eo *scene = NULL;
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Eo *root_node = NULL;
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Eo *camera_node = NULL;
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Eo *light_node = NULL;
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Eo *camera = NULL;
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Eo *mesh_node = NULL;
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Eo *mesh_node1 = NULL;
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Eo *mesh = NULL;
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Eo *mesh1 = NULL;
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Eo *material = NULL;
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Eo *material1 = NULL;
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Eo *texture = NULL;
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Eo *light = NULL;
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Ecore_Animator *anim = NULL;
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static Eina_Bool
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_animate_scene(void *data)
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{
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static int frame = 0;
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eo_do((Evas_3D_Node *)data, evas_3d_node_mesh_frame_set(mesh, frame));
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frame += 32;
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if (frame > 256 * 50) frame = 0;
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return EINA_TRUE;
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}
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static void
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_on_delete(Ecore_Evas *ee EINA_UNUSED)
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{
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ecore_main_loop_quit();
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}
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static void
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_on_canvas_resize(Ecore_Evas *ee)
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{
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int w, h;
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ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
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eo_do(background, evas_obj_size_set(w, h));
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eo_do(image, evas_obj_size_set(w, h));
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}
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static double pi = 3.14159265359;
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typedef struct _vec3
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{
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float x;
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float y;
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float z;
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} vec3;
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typedef struct _vec4
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{
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float x;
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float y;
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float z;
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float w;
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} vec4;
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static void
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_set_ball(Eo *mesh, double r, double x, double y, double z, int p, Evas_3D_Material *material)
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{
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int vcount, icount, vccount, i, j;
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double dtheta, dfi, sinth, costh, fi, theta, sinfi, cosfi;
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unsigned short *indices, *index;
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icount = p * p * 6;
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vccount = p + 1;
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vcount = vccount * vccount;
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dtheta = pi / p;
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dfi = 2 * pi / p;
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vec3 *vertices = malloc(sizeof(vec3) * vcount);
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vec3 *normals = malloc(sizeof(vec3) * vcount);
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for (j = 0; j < vccount; j++)
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{
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theta = j * dtheta;
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sinth = sin(theta);
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costh = cos(theta);
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for (i = 0; i < vccount; i++)
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{
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fi = i * dfi;
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sinfi = sin(fi);
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cosfi = cos(fi);
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vertices[i + j * vccount].x = r * sinth * cosfi + x;
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vertices[i + j * vccount].y = r * sinth * sinfi + y;
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vertices[i + j * vccount].z = r * costh + z;
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normals[i + j * vccount].x = sinth * cosfi;
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normals[i + j * vccount].y = sinth * sinfi;
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normals[i + j * vccount].z = costh;
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}
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}
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indices = malloc(sizeof(short) * icount);
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index = &indices[0];
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for(j = 0; j < p; j++)
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for(i = 0; i < p; i++)
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{
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*index++ = (unsigned short)(i + vccount * j);
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*index++ = i + vccount * (j + 1);
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*index++ = i + 1 + vccount * (j + 1);
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*index++ = i + vccount * j;
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*index++ = i + 1 + vccount * j;
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*index++ = i + vccount * (j + 1) + 1;
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}
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eo_do(mesh, evas_3d_mesh_vertex_count_set(vcount),
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evas_3d_mesh_frame_add(0);
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evas_3d_mesh_frame_vertex_data_copy_set(0, EVAS_3D_VERTEX_POSITION,
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sizeof(vec3), &vertices[0]);
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evas_3d_mesh_frame_vertex_data_copy_set(0, EVAS_3D_VERTEX_NORMAL,
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sizeof(vec3), &normals[0]);
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evas_3d_mesh_index_data_copy_set(EVAS_3D_INDEX_FORMAT_UNSIGNED_SHORT,
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icount , &indices[0]);
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evas_3d_mesh_vertex_assembly_set(EVAS_3D_VERTEX_ASSEMBLY_TRIANGLES);
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evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_PHONG);
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evas_3d_mesh_frame_material_set(0, material));
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free(vertices);
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free(normals);
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free(indices);
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}
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int
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main(void)
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{
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//Unless Evas 3D supports Software renderer, we set gl backened forcely.
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setenv("ECORE_EVAS_ENGINE", "opengl_x11", 1);
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if (!ecore_evas_init()) return 0;
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ecore_evas = ecore_evas_new(NULL, 10, 10, WIDTH, HEIGHT, NULL);
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if (!ecore_evas) return 0;
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ecore_evas_callback_delete_request_set(ecore_evas, _on_delete);
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ecore_evas_callback_resize_set(ecore_evas, _on_canvas_resize);
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ecore_evas_show(ecore_evas);
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evas = ecore_evas_get(ecore_evas);
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/* Add a scene object .*/
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scene = eo_add(EVAS_3D_SCENE_CLASS, evas);
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/* Add the root node for the scene. */
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root_node = eo_add(EVAS_3D_NODE_CLASS, evas,
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evas_3d_node_constructor(EVAS_3D_NODE_TYPE_NODE));
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/* Add the camera. */
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camera = eo_add(EVAS_3D_CAMERA_CLASS, evas);
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eo_do(camera,
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evas_3d_camera_projection_perspective_set(60.0, 1.0, 1.0, 1000.0));
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camera_node =
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eo_add(EVAS_3D_NODE_CLASS, evas,
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evas_3d_node_constructor(EVAS_3D_NODE_TYPE_CAMERA));
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eo_do(camera_node,
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evas_3d_node_camera_set(camera));
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eo_do(root_node,
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evas_3d_node_member_add(camera_node));
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eo_do(camera_node,
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evas_3d_node_position_set(100.0, 0.0, 20.0),
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evas_3d_node_look_at_set(EVAS_3D_SPACE_PARENT, 0.0, 0.0, 20.0,
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EVAS_3D_SPACE_PARENT, 0.0, 0.0, 1.0));
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/* Add the light. */
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light = eo_add(EVAS_3D_LIGHT_CLASS, evas);
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eo_do(light,
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evas_3d_light_ambient_set(0.2, 0.2, 0.2, 1.0),
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evas_3d_light_diffuse_set(1.0, 1.0, 1.0, 1.0),
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evas_3d_light_specular_set(1.0, 1.0, 1.0, 1.0),
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evas_3d_light_projection_perspective_set(45.0, 1.0, 2.0, 1000.0));
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light_node =
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eo_add(EVAS_3D_NODE_CLASS, evas,
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evas_3d_node_constructor(EVAS_3D_NODE_TYPE_LIGHT));
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eo_do(light_node,
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evas_3d_node_light_set(light),
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evas_3d_node_position_set(100.0, 30.0, 20.0),
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evas_3d_node_look_at_set(EVAS_3D_SPACE_PARENT, 0.0, 0.0, 20.0,
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EVAS_3D_SPACE_PARENT, 0.0, 0.0, 1.0));
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eo_do(root_node,
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evas_3d_node_member_add(light_node));
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/* Add the mesh. */
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mesh = eo_add(EVAS_3D_MESH_CLASS, evas);
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material = eo_add(EVAS_3D_MATERIAL_CLASS, evas);
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eo_do(mesh,
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efl_file_set("sonic.md2", NULL),
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evas_3d_mesh_frame_material_set(0, material),
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evas_3d_mesh_shade_mode_set(EVAS_3D_SHADE_MODE_PHONG));
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texture = eo_add(EVAS_3D_TEXTURE_CLASS, evas);
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eo_do(texture,
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evas_3d_texture_file_set("sonic.png", NULL),
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evas_3d_texture_filter_set(EVAS_3D_TEXTURE_FILTER_NEAREST,
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EVAS_3D_TEXTURE_FILTER_NEAREST),
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evas_3d_texture_wrap_set(EVAS_3D_WRAP_MODE_REPEAT,
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EVAS_3D_WRAP_MODE_REPEAT));
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eo_do(material,
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evas_3d_material_texture_set(EVAS_3D_MATERIAL_DIFFUSE, texture),
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evas_3d_material_texture_set(EVAS_3D_MATERIAL_AMBIENT, texture),
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evas_3d_material_enable_set(EVAS_3D_MATERIAL_AMBIENT, EINA_TRUE),
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evas_3d_material_enable_set(EVAS_3D_MATERIAL_DIFFUSE, EINA_TRUE),
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evas_3d_material_enable_set(EVAS_3D_MATERIAL_SPECULAR, EINA_TRUE),
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evas_3d_material_enable_set(EVAS_3D_MATERIAL_NORMAL, EINA_TRUE),
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evas_3d_material_color_set(EVAS_3D_MATERIAL_AMBIENT,
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1.0, 1.0, 1.0, 1.0),
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evas_3d_material_color_set(EVAS_3D_MATERIAL_DIFFUSE,
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1.0, 1.0, 1.0, 1.0),
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evas_3d_material_color_set(EVAS_3D_MATERIAL_SPECULAR,
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1.0, 1.0, 1.0, 1.0),
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evas_3d_material_shininess_set(50.0));
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mesh_node = eo_add(EVAS_3D_NODE_CLASS, evas,
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evas_3d_node_constructor(EVAS_3D_NODE_TYPE_MESH));
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eo_do(root_node,
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evas_3d_node_member_add(mesh_node));
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eo_do(mesh_node,
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evas_3d_node_mesh_add(mesh));
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material1 = eo_add(EVAS_3D_MATERIAL_CLASS, evas);
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eo_do(material1,
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evas_3d_material_enable_set(EVAS_3D_MATERIAL_AMBIENT, EINA_TRUE),
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evas_3d_material_enable_set(EVAS_3D_MATERIAL_DIFFUSE, EINA_TRUE),
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evas_3d_material_enable_set(EVAS_3D_MATERIAL_SPECULAR, EINA_TRUE),
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evas_3d_material_color_set(EVAS_3D_MATERIAL_AMBIENT, 1.0, 1.0, 1.0, 1.0),
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evas_3d_material_color_set(EVAS_3D_MATERIAL_DIFFUSE, 0.8, 0.8, 0.8, 1.0),
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evas_3d_material_color_set(EVAS_3D_MATERIAL_SPECULAR, 1.0, 1.0, 1.0, 1.0),
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evas_3d_material_shininess_set(100.0));
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mesh1 = eo_add(EVAS_3D_MESH_CLASS, evas);
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_set_ball(mesh1, 100, -200, 0, 0, 100, material1);
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mesh_node1 =
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eo_add(EVAS_3D_NODE_CLASS, evas,
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evas_3d_node_constructor(EVAS_3D_NODE_TYPE_MESH));
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eo_do(root_node, evas_3d_node_member_add(mesh_node1));
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eo_do(mesh_node1, evas_3d_node_mesh_add(mesh1));
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/* Set up scene. */
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eo_do(scene,
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evas_3d_scene_root_node_set(root_node),
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evas_3d_scene_camera_node_set(camera_node),
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evas_3d_scene_size_set(WIDTH, HEIGHT),
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evas_3d_scene_shadows_enable_set(EINA_TRUE));
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/* Add a background rectangle objects. */
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background = eo_add(EVAS_RECTANGLE_CLASS, evas);
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eo_do(background,
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evas_obj_color_set(0, 0, 0, 255),
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evas_obj_size_set(WIDTH, HEIGHT),
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evas_obj_visibility_set(EINA_TRUE));
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/* Add an image object for 3D scene rendering. */
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image = evas_object_image_filled_add(evas);
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eo_do(image,
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evas_obj_size_set(WIDTH, HEIGHT),
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evas_obj_visibility_set(EINA_TRUE));
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/* Set the image object as render target for 3D scene. */
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eo_do(image, evas_obj_image_scene_set(scene));
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/* Add animator. */
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ecore_animator_frametime_set(0.008);
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anim = ecore_animator_add(_animate_scene, mesh_node);
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/* Enter main loop. */
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ecore_main_loop_begin();
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ecore_evas_free(ecore_evas);
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ecore_evas_shutdown();
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return 0;
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}
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