RNTime
RNCurrentTime(void)
{
RNTime tm;
tm.Read();
return tm;
}
RNScalar RNTime::
Elapsed (void) const
{
// Return number of seconds elapsed since time
RNTime tm; tm.Read();
return tm.Elapsed(*this);
}
void GLUTMouse(int button, int state, int x, int y)
{
// Invert y coordinate
y = GLUTwindow_height - y;
// Mouse is going down
if (state == GLUT_DOWN) {
// Reset mouse drag
GLUTmouse_drag = 0;
}
else {
// Check for double click
static RNBoolean double_click = FALSE;
static RNTime last_mouse_up_time;
double_click = (!double_click) && (last_mouse_up_time.Elapsed() < 0.4);
last_mouse_up_time.Read();
// Check for click (rather than drag)
if (GLUTmouse_drag < 100) {
// Check for double click
if (double_click) {
// Set viewing center point
R3Ray ray = viewer->WorldRay(x, y);
R3Point intersection_point;
if (scene->Intersects(ray, NULL, NULL, NULL, &intersection_point)) {
center = intersection_point;
}
}
}
}
// Remember button state
int b = (button == GLUT_LEFT_BUTTON) ? 0 : ((button == GLUT_MIDDLE_BUTTON) ? 1 : 2);
GLUTbutton[b] = (state == GLUT_DOWN) ? 1 : 0;
// Remember modifiers
GLUTmodifiers = glutGetModifiers();
// Remember mouse position
GLUTmouse[0] = x;
GLUTmouse[1] = y;
// Redraw
glutPostRedisplay();
}
void GLUTMouse(int button, int state, int x, int y)
{
// Invert y coordinate
y = GLUTwindow_height - y;
// Process mouse button event
if ((button == GLUT_LEFT_BUTTON) && (state == GLUT_DOWN)) {
// Check for double click
static RNTime click_time;
const RNScalar max_double_click_elapsed = 0.5;
RNBoolean double_click = (click_time.Elapsed() < max_double_click_elapsed);
click_time.Read();
// Select closest point to cursor
if (double_click) {
selected_point = NULL;
RNLength closest_distance = 10;
R2Point cursor_position(x, y);
for (int i = 0; i < all_points.NEntries(); i++) {
TestPoint *point = all_points[i];
const R3Point& world_position = point->position;
R2Point screen_position = viewer->ViewportPoint(world_position);
RNLength distance = R2Distance(screen_position, cursor_position);
if (distance < closest_distance) {
selected_point = point;
closest_distance = distance;
}
}
// Find closest points
closest_point = NULL;
nearby_points.Empty();
if (selected_point) {
if (max_nearby_points > 0) {
kdtree->FindClosest(selected_point, min_nearby_distance, max_nearby_distance, max_nearby_points, nearby_points);
closest_point = (nearby_points.NEntries() > 0) ? nearby_points.Head() : NULL;
if (print_debug) printf("Found %d points\n", nearby_points.NEntries());
}
else {
kdtree->FindAll(selected_point, min_nearby_distance, max_nearby_distance, nearby_points);
closest_point = kdtree->FindClosest(selected_point);
if (print_debug) printf("Found %d points\n", nearby_points.NEntries());
}
}
}
}
// Remember button state
int b = (button == GLUT_LEFT_BUTTON) ? 0 : ((button == GLUT_MIDDLE_BUTTON) ? 1 : 2);
GLUTbutton[b] = (state == GLUT_DOWN) ? 1 : 0;
// Remember modifiers
GLUTmodifiers = glutGetModifiers();
// Remember mouse position
GLUTmouse[0] = x;
GLUTmouse[1] = y;
// Redraw
glutPostRedisplay();
}
void GLUTRedraw(void)
{
// Check scene
if (!scene) return;
// Set viewing transformation
viewer->Camera().Load();
// Clear window
RNRgb background = scene->Background();
glClearColor(background.R(), background.G(), background.B(), 1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Load lights
LoadLights(scene);
// Draw camera
if (show_camera) {
glDisable(GL_LIGHTING);
glColor3d(1.0, 1.0, 1.0);
glLineWidth(5);
DrawCamera(scene);
glLineWidth(1);
}
// Draw lights
if (show_lights) {
glDisable(GL_LIGHTING);
glColor3d(1.0, 1.0, 1.0);
glLineWidth(5);
DrawLights(scene);
glLineWidth(1);
}
// Draw rays
if (show_rays) {
glDisable(GL_LIGHTING);
glColor3d(0.0, 1.0, 0.0);
glLineWidth(3);
DrawRays(scene);
glLineWidth(1);
}
// Draw rays
if (show_photons) {
glDisable(GL_LIGHTING);
glColor3d(1.0, 1.0, 1.0);
glLineWidth(1);
DrawPhotonPaths(scene);
glLineWidth(1);
}
// Draw rays
if (show_global_samples) {
glDisable(GL_LIGHTING);
glColor3d(1.0, 1.0, 1.0);
glLineWidth(1);
DrawGlobalSamples(scene);
glLineWidth(1);
}
// Draw rays
if (show_caustic_samples) {
glDisable(GL_LIGHTING);
glColor3d(1.0, 1.0, 1.0);
glLineWidth(1);
DrawCausticSamples(scene);
glLineWidth(1);
}
// Draw scene nodes
if (show_shapes) {
glEnable(GL_LIGHTING);
R3null_material.Draw();
DrawShapes(scene, scene->Root());
R3null_material.Draw();
}
// Draw bboxes
if (show_bboxes) {
glDisable(GL_LIGHTING);
glColor3d(1.0, 0.0, 0.0);
DrawBBoxes(scene, scene->Root());
}
// Draw frame time
if (show_frame_rate) {
char buffer[128];
static RNTime last_time;
double frame_time = last_time.Elapsed();
last_time.Read();
if ((frame_time > 0) && (frame_time < 10)) {
glDisable(GL_LIGHTING);
glColor3d(1.0, 1.0, 1.0);
sprintf(buffer, "%.1f fps", 1.0 / frame_time);
DrawText(R2Point(100, 100), buffer);
}
}
// Capture screenshot image
if (screenshot_image_name) {
if (print_verbose) printf("Creating image %s\n", screenshot_image_name);
R2Image image(GLUTwindow_width, GLUTwindow_height, 3);
image.Capture();
image.Write(screenshot_image_name);
screenshot_image_name = NULL;
}
// Swap buffers
glutSwapBuffers();
}