void PointCloudApplication::render_camera_frame() {
switch_to_ortho();
//glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(/*GL_COLOR_BUFFER_BIT | */GL_DEPTH_BUFFER_BIT);
glBindTexture(GL_TEXTURE_2D, video_texture);
glEnable(GL_TEXTURE_2D);
glDisable(GL_DEPTH_TEST);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState( GL_TEXTURE_COORD_ARRAY );
glColor4f(1.0, 1.0, 1.0, 1.0);
glVertexPointer(2, GL_FLOAT, 0, video_vertices);
glTexCoordPointer( 2, GL_FLOAT, 0, video_texcoords);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glDisable(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
}
/*
* Draws the required (for the free SDK) logo in the bottom-left corner of the visible camera feed
*/
void PointCloudApplication::draw_logo() {
int h = context.viewport_height;
int w = context.viewport_width;
double scale_factor = w == 320 ? 0.5 : 1.0;
switch_to_ortho();
draw_image(logo_texture, 10, h-(140+54)*scale_factor, 262*scale_factor, 54*scale_factor, 0, 0, 1, 1);
}
void PointCloudApplication::setup_graphics() {
// Define Viewport
glViewport(0,
0,
context.viewport_width * ui_scale_factor,
context.viewport_height * ui_scale_factor);
setup_video_texture();
logo_texture = read_png_texture("pointcloud-logo.png");
point_texture = read_png_texture("trackpoint.png");
switch_to_ortho();
}
/*
* Renders the tracked points
*/
void PointCloudApplication::render_point_cloud() {
pointcloud_state state = pointcloud_get_state();
if (state == POINTCLOUD_INITIALIZING ||
state == POINTCLOUD_TRACKING_SLAM_MAP) {
pointcloud_point_cloud* points = pointcloud_get_points();
if (points) {
switch_to_camera();
disable_lighting();
glDisable(GL_DEPTH_TEST);
glColor4f(0.9, 0.95, 1.0, 0.6);
glEnable(GL_POINT_SPRITE_OES);
glEnable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBindTexture(GL_TEXTURE_2D, point_texture);
glTexEnvi(GL_POINT_SPRITE_OES, GL_COORD_REPLACE_OES, GL_TRUE);
glPointParameterf(GL_POINT_SIZE_MAX, 64.0f);
glPointSize(32.0);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3,GL_FLOAT,0, (float *)points->points);
glDrawArrays(GL_POINTS,0, points->size);
glDisableClientState(GL_VERTEX_ARRAY);
glColor4f(1, 1, 1, 1);
glPointSize(1);
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glDisable(GL_POINT_SPRITE_OES);
pointcloud_destroy_point_cloud(points);
switch_to_ortho();
}
}
}
//TODO: ES2ify
void App::render_content(double time_since_last_frame) {
pointcloud_state state = pointcloud_get_state();
// Draw the content if we have SLAM or image tracking
if (state == POINTCLOUD_TRACKING_SLAM_MAP || state == POINTCLOUD_TRACKING_IMAGES) {
switch_to_camera();
// // Set light position
// static const float light_position[4] = {1, 6, 0.5, 1.0f};
// glLightfv(GL_LIGHT0, GL_POSITION, light_position);
//
// glColor4f(1,0,0,1);
//
// glDisable(GL_TEXTURE_2D);
// glEnable(GL_COLOR_MATERIAL);
// glShadeModel(GL_FLAT);
//
// glEnableClientState(GL_VERTEX_ARRAY);
// glEnableClientState(GL_NORMAL_ARRAY);
//
// glVertexPointer(3, GL_FLOAT, 0, (float *)cuboid_vertices);
// glNormalPointer(GL_FLOAT, 0, (float *)cuboid_normals);
// glDrawArrays(GL_TRIANGLE_STRIP, 0, 19);
//
// glDisableClientState(GL_NORMAL_ARRAY);
// glDisableClientState(GL_VERTEX_ARRAY);
//
// glShadeModel(GL_SMOOTH);
// glDisable(GL_COLOR_MATERIAL);
// glColor4f(1, 1, 1, 1);
}
// Draw the UI on top of the content
switch_to_ortho();
draw_ui();
}