void camerahdl::view(canvashdl *canvas)
{
canvas->load_identity();
if (focus == NULL)
{
canvas->rotate(-orientation[0], vec3f(1.0, 0.0, 0.0));
canvas->rotate(-orientation[1], vec3f(0.0, 1.0, 0.0));
canvas->rotate(-orientation[2], vec3f(0.0, 0.0, 1.0));
canvas->translate(-position);
}
else
{
position = focus->position + ror3(vec3f(0.0, 0.0, radius), orientation);
canvas->look_at(position,
focus->position,
ror3(vec3f(0.0, 1.0, 0.0), orientation));
}
if (model != NULL)
{
model->position = position;
model->orientation = orientation;
model->orientation[0] *= -1;
}
}
void idlefunc()
{
bool change = false;
if (scene.active_camera_valid() && scene.cameras[scene.active_camera]->focus == NULL)
{
if (keys['w'])
{
scene.cameras[scene.active_camera]->position += -0.25f*ror3(vec3f(0.0, 0.0, 1.0), scene.cameras[scene.active_camera]->orientation);
change = true;
}
if (keys['s'])
{
scene.cameras[scene.active_camera]->position += 0.25f*ror3(vec3f(0.0, 0.0, 1.0), scene.cameras[scene.active_camera]->orientation);
change = true;
}
if (keys['a'])
{
scene.cameras[scene.active_camera]->position += -0.25f*ror3(vec3f(1.0, 0.0, 0.0), scene.cameras[scene.active_camera]->orientation);
change = true;
}
if (keys['d'])
{
scene.cameras[scene.active_camera]->position += 0.25f*ror3(vec3f(1.0, 0.0, 0.0), scene.cameras[scene.active_camera]->orientation);
change = true;
}
if (keys['q'])
{
scene.cameras[scene.active_camera]->position += -0.25f*ror3(vec3f(0.0, 1.0, 0.0), scene.cameras[scene.active_camera]->orientation);
change = true;
}
if (keys['e'])
{
scene.cameras[scene.active_camera]->position += 0.25f*ror3(vec3f(0.0, 1.0, 0.0), scene.cameras[scene.active_camera]->orientation);
change = true;
}
}
else if (scene.active_camera_valid() && scene.cameras[scene.active_camera]->focus != NULL)
{
if (keys['w'])
{
scene.cameras[scene.active_camera]->radius -= 0.25;
change = true;
}
if (keys['s'])
{
scene.cameras[scene.active_camera]->radius += 0.25;
change = true;
}
}
if (change)
glutPostRedisplay();
}
void pmotionfunc(int x, int y)
{
if (bound)
{
glutSetMenu(canvas_menu_id);
int deltax = x - mousex;
int deltay = y - mousey;
mousex = x;
mousey = y;
bool warp = false;
if (mousex > 3*canvas.get_width()/4 || mousex < canvas.get_width()/4)
{
mousex = canvas.get_width()/2;
warp = true;
}
if (mousey > 3*canvas.get_height()/4 || mousey < canvas.get_height()/4)
{
mousey = canvas.get_height()/2;
warp = true;
}
if (warp)
glutWarpPointer(mousex, mousey);
if (scene.active_camera_valid())
{
scene.cameras[scene.active_camera]->orientation[1] -= (float)deltax/500.0;
scene.cameras[scene.active_camera]->orientation[0] -= (float)deltay/500.0;
}
glutPostRedisplay();
}
else if (scene.active_camera_valid())
{
vec3f direction;
vec3f position;
if (scene.active_camera_valid())
{
if (scene.cameras[scene.active_camera]->type == "ortho")
{
position = canvas.unproject(canvas.to_window(vec2i(x, y)));
direction = ror3(vec3f(0.0f, 0.0f, 1.0f), scene.cameras[scene.active_camera]->orientation);
}
else
{
position = scene.cameras[scene.active_camera]->position;
direction = norm(canvas.unproject(canvas.to_window(vec2i(x, y))));
}
}
int old_active_object = scene.active_object;
scene.active_object = -1;
for (int i = 0; i < scene.objects.size(); i++)
{
if (scene.objects[i] != NULL && scene.cameras[scene.active_camera]->model != scene.objects[i])
{
bool is_light = false;
bool is_camera = false;
// TODO Assignment 3: uncomment this
//for (int j = 0; j < scene.lights.size() && !is_light; j++)
// if (scene.lights[j] != NULL && scene.lights[j]->model == scene.objects[i])
// is_light = true;
for (int j = 0; j < scene.cameras.size() && !is_camera; j++)
if (scene.cameras[j] != NULL && scene.cameras[j]->model == scene.objects[i])
is_camera = true;
if ((!is_light && !is_camera) || (is_light && scene.render_lights) || (is_camera && scene.render_cameras))
{
vec3f invdir = 1.0f/direction;
vec3i sign((int)(invdir[0] < 0), (int)(invdir[1] < 0), (int)(invdir[2] < 0));
vec3f origin = position - scene.objects[i]->position;
float tmin, tmax, tymin, tymax, tzmin, tzmax;
tmin = (scene.objects[i]->bound[0 + sign[0]]*scene.objects[i]->scale - origin[0])*invdir[0];
tmax = (scene.objects[i]->bound[0 + 1-sign[0]]*scene.objects[i]->scale - origin[0])*invdir[0];
tymin = (scene.objects[i]->bound[2 + sign[1]]*scene.objects[i]->scale - origin[1])*invdir[1];
tymax = (scene.objects[i]->bound[2 + 1-sign[1]]*scene.objects[i]->scale - origin[1])*invdir[1];
if ((tmin <= tymax) && (tymin <= tmax))
{
if (tymin > tmin)
tmin = tymin;
if (tymax < tmax)
tmax = tymax;
tzmin = (scene.objects[i]->bound[4 + sign[2]]*scene.objects[i]->scale - origin[2])*invdir[2];
tzmax = (scene.objects[i]->bound[4 + 1-sign[2]]*scene.objects[i]->scale - origin[2])*invdir[2];
if ((tmin <= tzmax) && (tzmin <= tmax))
{
scene.active_object = i;
i = scene.objects.size();
}
}
}
}
}
if (scene.active_object != old_active_object)
{
bool is_light = false;
bool is_camera = false;
// TODO Assignment 3: uncomment this
//for (int i = 0; i < scene.lights.size() && !is_light; i++)
// if (scene.lights[i] != NULL && scene.active_object_valid() && scene.lights[i]->model == scene.objects[scene.active_object])
// is_light = true;
for (int i = 0; i < scene.cameras.size() && !is_camera; i++)
if (scene.cameras[i] != NULL && scene.active_object_valid() && scene.cameras[i]->model == scene.objects[scene.active_object])
is_camera = true;
glutDetachMenu(GLUT_RIGHT_BUTTON);
if (scene.active_object == -1)
glutSetMenu(canvas_menu_id);
else if (is_light)
glutSetMenu(light_menu_id);
else if (is_camera)
glutSetMenu(camera_menu_id);
else
glutSetMenu(object_menu_id);
glutAttachMenu(GLUT_RIGHT_BUTTON);
glutPostRedisplay();
}
}
}
void motionfunc(int x, int y)
{
if (!bound && !menu)
{
int deltax = x - mousex;
int deltay = mousey - y;
mousex = x;
mousey = y;
vec3f direction;
vec3f position;
if (scene.active_camera_valid())
{
if (scene.cameras[scene.active_camera]->type == "ortho")
{
position = canvas.unproject(canvas.to_window(vec2i(x, y)));
direction = ror3(vec3f(0.0f, 0.0f, 1.0f), scene.cameras[scene.active_camera]->orientation);
}
else
{
position = scene.cameras[scene.active_camera]->position;
direction = norm(canvas.unproject(canvas.to_window(vec2i(x, y))));
}
}
if (scene.active_object_valid() && scene.active_camera_valid())
{
if (manipulator == manipulate::translate)
{
float d = mag(scene.objects[scene.active_object]->position - position);
scene.objects[scene.active_object]->position = d*direction + position;
}
else if (manipulator == manipulate::rotate)
scene.objects[scene.active_object]->orientation += vec3f(-(float)deltay/100.0, (float)deltax/100.0, 0.0);
else if (manipulator == manipulate::scale)
scene.objects[scene.active_object]->scale += (float)deltay/100.0;
for (int i = 0; i < scene.cameras.size(); i++)
if (scene.cameras[i]->model == scene.objects[scene.active_object])
{
scene.cameras[i]->position = scene.objects[scene.active_object]->position;
scene.cameras[i]->orientation = scene.objects[scene.active_object]->orientation;
}
}
if (scene.active_camera_valid())
{
if (manipulator == manipulate::fovy && scene.cameras[scene.active_camera]->type == "perspective")
((perspectivehdl*)scene.cameras[scene.active_camera])->fovy += (float)deltay/100.0;
else if (manipulator == manipulate::aspect && scene.cameras[scene.active_camera]->type == "perspective")
((perspectivehdl*)scene.cameras[scene.active_camera])->aspect += (float)deltay/100.0;
else if (manipulator == manipulate::width && scene.cameras[scene.active_camera]->type == "ortho")
{
((orthohdl*)scene.cameras[scene.active_camera])->right += (float)deltay/200.0;
((orthohdl*)scene.cameras[scene.active_camera])->left -= (float)deltay/200.0;
}
else if (manipulator == manipulate::width && scene.cameras[scene.active_camera]->type == "frustum")
{
((frustumhdl*)scene.cameras[scene.active_camera])->right += (float)deltay/200.0;
((frustumhdl*)scene.cameras[scene.active_camera])->left -= (float)deltay/200.0;
}
else if (manipulator == manipulate::height && scene.cameras[scene.active_camera]->type == "ortho")
{
((orthohdl*)scene.cameras[scene.active_camera])->top += (float)deltay/200.0;
((orthohdl*)scene.cameras[scene.active_camera])->bottom -= (float)deltay/200.0;
}
else if (manipulator == manipulate::height && scene.cameras[scene.active_camera]->type == "frustum")
{
((frustumhdl*)scene.cameras[scene.active_camera])->top += (float)deltay/200.0;
((frustumhdl*)scene.cameras[scene.active_camera])->bottom -= (float)deltay/200.0;
}
else if (manipulator == manipulate::front && scene.cameras[scene.active_camera]->type == "ortho")
((orthohdl*)scene.cameras[scene.active_camera])->front += (float)deltay/100.0;
else if (manipulator == manipulate::front && scene.cameras[scene.active_camera]->type == "frustum")
((frustumhdl*)scene.cameras[scene.active_camera])->front += (float)deltay/100.0;
else if (manipulator == manipulate::front && scene.cameras[scene.active_camera]->type == "perspective")
((perspectivehdl*)scene.cameras[scene.active_camera])->front += (float)deltay/100.0;
else if (manipulator == manipulate::back && scene.cameras[scene.active_camera]->type == "ortho")
((orthohdl*)scene.cameras[scene.active_camera])->back += (float)deltay/100.0;
else if (manipulator == manipulate::back && scene.cameras[scene.active_camera]->type == "frustum")
((frustumhdl*)scene.cameras[scene.active_camera])->back += (float)deltay/100.0;
else if (manipulator == manipulate::back && scene.cameras[scene.active_camera]->type == "perspective")
((perspectivehdl*)scene.cameras[scene.active_camera])->back += (float)deltay/100.0;
if (manipulator == manipulate::fovy ||
manipulator == manipulate::aspect ||
manipulator == manipulate::width ||
manipulator == manipulate::height ||
manipulator == manipulate::front ||
manipulator == manipulate::back)
scene.cameras[scene.active_camera]->project(&canvas);
}
glutPostRedisplay();
}
else if (!bound)
{
menu = false;
pmotionfunc(x, y);
}
}
void motionfunc(int x, int y)
{
if (!bound && !menu)
{
int deltax = x - mousex;
int deltay = mousey - y;
mousex = x;
mousey = y;
vec3f direction;
vec3f position;
if (scene.active_camera_valid())
{
if (scene.cameras[scene.active_camera]->type == "ortho")
{
GLdouble model[16];
GLdouble proj[16];
GLint view[4];
glGetDoublev(GL_MODELVIEW_MATRIX, model);
glGetDoublev(GL_PROJECTION_MATRIX, proj);
glGetIntegerv(GL_VIEWPORT, view);
vec<double, 3> p;
gluUnProject(x, height-y, 0.0, model, proj, view, &p[0], &p[1], &p[2]);
position = p;
direction = ror3(vec3f(0.0f, 0.0f, 1.0f), scene.cameras[scene.active_camera]->orientation);
}
else
{
GLdouble model[16];
GLdouble proj[16];
GLint view[4];
glGetDoublev(GL_MODELVIEW_MATRIX, model);
glGetDoublev(GL_PROJECTION_MATRIX, proj);
glGetIntegerv(GL_VIEWPORT, view);
vec<double, 3> p;
gluUnProject(x, height-y, 0.0, model, proj, view, &p[0], &p[1], &p[2]);
position = scene.cameras[scene.active_camera]->position;
direction = norm(p - position);
}
}
if (scene.active_object_valid() && scene.active_camera_valid())
{
if (manipulator == manipulate::translate)
{
float d = mag(scene.objects[scene.active_object]->position - position);
scene.objects[scene.active_object]->position = d*direction + position;
}
else if (manipulator == manipulate::rotate)
scene.objects[scene.active_object]->orientation += vec3f(-(float)deltay/100.0, (float)deltax/100.0, 0.0);
else if (manipulator == manipulate::scale)
scene.objects[scene.active_object]->scale += (float)deltay/100.0;
else if (manipulator == manipulate::stepsize)
{
scene.objects[scene.active_object]->minstep += (float)deltay/100.0;
if (scene.objects[scene.active_object]->minstep < 0.0)
scene.objects[scene.active_object]->minstep = 0.0;
}
for (int i = 0; i < scene.cameras.size(); i++)
if (scene.cameras[i]->model == scene.objects[scene.active_object])
{
scene.cameras[i]->position = scene.objects[scene.active_object]->position;
scene.cameras[i]->orientation = scene.objects[scene.active_object]->orientation;
}
}
if (scene.active_camera_valid())
{
if (manipulator == manipulate::fovy && scene.cameras[scene.active_camera]->type == "perspective")
((perspectivehdl*)scene.cameras[scene.active_camera])->fovy += (float)deltay/100.0;
else if (manipulator == manipulate::aspect && scene.cameras[scene.active_camera]->type == "perspective")
((perspectivehdl*)scene.cameras[scene.active_camera])->aspect += (float)deltay/100.0;
else if (manipulator == manipulate::width && scene.cameras[scene.active_camera]->type == "ortho")
{
((orthohdl*)scene.cameras[scene.active_camera])->right += (float)deltay/200.0;
((orthohdl*)scene.cameras[scene.active_camera])->left -= (float)deltay/200.0;
}
else if (manipulator == manipulate::width && scene.cameras[scene.active_camera]->type == "frustum")
{
((frustumhdl*)scene.cameras[scene.active_camera])->right += (float)deltay/200.0;
((frustumhdl*)scene.cameras[scene.active_camera])->left -= (float)deltay/200.0;
}
else if (manipulator == manipulate::height && scene.cameras[scene.active_camera]->type == "ortho")
{
((orthohdl*)scene.cameras[scene.active_camera])->top += (float)deltay/200.0;
((orthohdl*)scene.cameras[scene.active_camera])->bottom -= (float)deltay/200.0;
}
else if (manipulator == manipulate::height && scene.cameras[scene.active_camera]->type == "frustum")
{
((frustumhdl*)scene.cameras[scene.active_camera])->top += (float)deltay/200.0;
((frustumhdl*)scene.cameras[scene.active_camera])->bottom -= (float)deltay/200.0;
}
else if (manipulator == manipulate::front && scene.cameras[scene.active_camera]->type == "ortho")
((orthohdl*)scene.cameras[scene.active_camera])->front += (float)deltay/100.0;
else if (manipulator == manipulate::front && scene.cameras[scene.active_camera]->type == "frustum")
((frustumhdl*)scene.cameras[scene.active_camera])->front += (float)deltay/100.0;
else if (manipulator == manipulate::front && scene.cameras[scene.active_camera]->type == "perspective")
((perspectivehdl*)scene.cameras[scene.active_camera])->front += (float)deltay/100.0;
else if (manipulator == manipulate::back && scene.cameras[scene.active_camera]->type == "ortho")
((orthohdl*)scene.cameras[scene.active_camera])->back += (float)deltay/100.0;
else if (manipulator == manipulate::back && scene.cameras[scene.active_camera]->type == "frustum")
((frustumhdl*)scene.cameras[scene.active_camera])->back += (float)deltay/100.0;
else if (manipulator == manipulate::back && scene.cameras[scene.active_camera]->type == "perspective")
((perspectivehdl*)scene.cameras[scene.active_camera])->back += (float)deltay/100.0;
if (manipulator == manipulate::fovy ||
manipulator == manipulate::aspect ||
manipulator == manipulate::width ||
manipulator == manipulate::height ||
manipulator == manipulate::front ||
manipulator == manipulate::back)
scene.cameras[scene.active_camera]->project();
}
glutPostRedisplay();
}
else if (!bound)
{
menu = false;
pmotionfunc(x, y);
}
}
void pmotionfunc(int x, int y)
{
if (bound)
{
glutSetMenu(canvas_menu_id);
int deltax = x - mousex;
int deltay = y - mousey;
mousex = x;
mousey = y;
bool set_warp = false;
if (mousex > 3*width/4 || mousex < width/4)
{
mousex = width/2;
set_warp = true;
}
if (mousey > 3*height/4 || mousey < height/4)
{
mousey = height/2;
set_warp = true;
}
if (!set_warp)
warp = false;
if (scene.active_camera_valid() && !warp)
{
scene.cameras[scene.active_camera]->orientation[1] -= (float)deltax/500.0;
scene.cameras[scene.active_camera]->orientation[0] -= (float)deltay/500.0;
}
if (set_warp)
{
glutWarpPointer(mousex, mousey);
warp = true;
}
glutPostRedisplay();
}
else if (scene.active_camera_valid())
{
vec3f direction;
vec3f position;
if (scene.cameras[scene.active_camera]->type == "ortho")
{
GLdouble model[16];
GLdouble proj[16];
GLint view[4];
glGetDoublev(GL_MODELVIEW_MATRIX, model);
glGetDoublev(GL_PROJECTION_MATRIX, proj);
glGetIntegerv(GL_VIEWPORT, view);
vec<double, 3> p;
gluUnProject(x, height-y, 0.0f, model, proj, view, &p[0], &p[1], &p[2]);
position = p;
direction = ror3(vec3f(0.0f, 0.0f, 1.0f), scene.cameras[scene.active_camera]->orientation);
}
else
{
GLdouble model[16];
GLdouble proj[16];
GLint view[4];
glGetDoublev(GL_MODELVIEW_MATRIX, model);
glGetDoublev(GL_PROJECTION_MATRIX, proj);
glGetIntegerv(GL_VIEWPORT, view);
vec<double, 3> p;
gluUnProject(x, height-y, 0.0f, model, proj, view, &p[0], &p[1], &p[2]);
position = scene.cameras[scene.active_camera]->position;
direction = norm(p - position);
}
int old_active_object = scene.active_object;
scene.active_object = -1;
for (int i = 0; i < scene.objects.size(); i++)
{
if (scene.objects[i] != NULL && scene.cameras[scene.active_camera]->model != scene.objects[i])
{
bool is_light = false;
bool is_camera = false;
for (int j = 0; j < scene.lights.size() && !is_light; j++)
if (scene.lights[j] != NULL && scene.lights[j]->model == scene.objects[i])
is_light = true;
for (int j = 0; j < scene.cameras.size() && !is_camera; j++)
if (scene.cameras[j] != NULL && scene.cameras[j]->model == scene.objects[i])
is_camera = true;
if ((!is_light && !is_camera) || (is_light && scene.render_lights) || (is_camera && scene.render_cameras))
{
vec3f invdir = 1.0f/direction;
vec3i sign((int)(invdir[0] < 0), (int)(invdir[1] < 0), (int)(invdir[2] < 0));
vec3f origin = position - scene.objects[i]->position;
float tmin, tmax, tymin, tymax, tzmin, tzmax;
tmin = (scene.objects[i]->bound[0 + sign[0]]*scene.objects[i]->scale - origin[0])*invdir[0];
tmax = (scene.objects[i]->bound[0 + 1-sign[0]]*scene.objects[i]->scale - origin[0])*invdir[0];
tymin = (scene.objects[i]->bound[2 + sign[1]]*scene.objects[i]->scale - origin[1])*invdir[1];
tymax = (scene.objects[i]->bound[2 + 1-sign[1]]*scene.objects[i]->scale - origin[1])*invdir[1];
if ((tmin <= tymax) && (tymin <= tmax))
{
if (tymin > tmin)
tmin = tymin;
if (tymax < tmax)
tmax = tymax;
tzmin = (scene.objects[i]->bound[4 + sign[2]]*scene.objects[i]->scale - origin[2])*invdir[2];
tzmax = (scene.objects[i]->bound[4 + 1-sign[2]]*scene.objects[i]->scale - origin[2])*invdir[2];
if ((tmin <= tzmax) && (tzmin <= tmax))
{
scene.active_object = i;
i = scene.objects.size();
}
}
}
}
}
if (scene.active_object != old_active_object)
{
bool is_light = false;
bool is_camera = false;
for (int i = 0; i < scene.lights.size() && !is_light; i++)
if (scene.lights[i] != NULL && scene.active_object_valid() && scene.lights[i]->model == scene.objects[scene.active_object])
is_light = true;
for (int i = 0; i < scene.cameras.size() && !is_camera; i++)
if (scene.cameras[i] != NULL && scene.active_object_valid() && scene.cameras[i]->model == scene.objects[scene.active_object])
is_camera = true;
glutDetachMenu(GLUT_RIGHT_BUTTON);
if (scene.active_object == -1)
glutSetMenu(canvas_menu_id);
else if (is_light)
glutSetMenu(light_menu_id);
else if (is_camera)
glutSetMenu(camera_menu_id);
else
glutSetMenu(object_menu_id);
glutAttachMenu(GLUT_RIGHT_BUTTON);
glutPostRedisplay();
}
}
}
