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godot/scene/3d/camera.cpp

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/*************************************************************************/
/* camera.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "camera.h"
#include "camera_matrix.h"
#include "scene/resources/material.h"
#include "scene/resources/surface_tool.h"
void Camera::_update_audio_listener_state() {
}
void Camera::_request_camera_update() {
_update_camera();
}
void Camera::_update_camera_mode() {
force_change=true;
switch(mode) {
case PROJECTION_PERSPECTIVE: {
set_perspective(fov,near,far);
} break;
case PROJECTION_ORTHOGONAL: {
set_orthogonal(size,near,far);
} break;
}
}
bool Camera::_set(const StringName& p_name, const Variant& p_value) {
bool changed_all=false;
if (p_name=="projection") {
int proj = p_value;
if (proj==PROJECTION_PERSPECTIVE)
mode=PROJECTION_PERSPECTIVE;
if (proj==PROJECTION_ORTHOGONAL)
mode=PROJECTION_ORTHOGONAL;
changed_all=true;
} else if (p_name=="fov" || p_name=="fovy" || p_name=="fovx")
fov=p_value;
else if (p_name=="size" || p_name=="sizex" || p_name=="sizey")
size=p_value;
else if (p_name=="near")
near=p_value;
else if (p_name=="far")
far=p_value;
else if (p_name=="keep_aspect")
set_keep_aspect_mode(KeepAspect(int(p_value)));
else if (p_name=="vaspect")
set_keep_aspect_mode(p_value?KEEP_WIDTH:KEEP_HEIGHT);
else if (p_name=="h_offset")
h_offset=p_value;
else if (p_name=="v_offset")
v_offset=p_value;
else if (p_name=="current") {
if (p_value.operator bool()) {
make_current();
} else {
clear_current();
}
} else if (p_name=="cull_mask") {
set_cull_mask(p_value);
} else if (p_name=="environment") {
set_environment(p_value);
} else
return false;
_update_camera_mode();
if (changed_all)
_change_notify();
return true;
}
bool Camera::_get(const StringName& p_name,Variant &r_ret) const {
if (p_name=="projection") {
r_ret= mode;
} else if (p_name=="fov" || p_name=="fovy" || p_name=="fovx")
r_ret= fov;
else if (p_name=="size" || p_name=="sizex" || p_name=="sizey")
r_ret= size;
else if (p_name=="near")
r_ret= near;
else if (p_name=="far")
r_ret= far;
else if (p_name=="keep_aspect")
r_ret= int(keep_aspect);
else if (p_name=="current") {
if (is_inside_tree() && get_tree()->is_node_being_edited(this)) {
r_ret=current;
} else {
r_ret=is_current();
}
} else if (p_name=="cull_mask") {
r_ret=get_cull_mask();
} else if (p_name=="h_offset") {
r_ret=get_h_offset();
} else if (p_name=="v_offset") {
r_ret=get_v_offset();
} else if (p_name=="environment") {
r_ret=get_environment();
} else
return false;
return true;
}
void Camera::_get_property_list( List<PropertyInfo> *p_list) const {
p_list->push_back( PropertyInfo( Variant::INT, "projection", PROPERTY_HINT_ENUM, "Perspective,Orthogonal") );
switch(mode) {
case PROJECTION_PERSPECTIVE: {
p_list->push_back( PropertyInfo( Variant::REAL, "fov" , PROPERTY_HINT_RANGE, "1,179,0.1",PROPERTY_USAGE_NOEDITOR) );
if (keep_aspect==KEEP_WIDTH)
p_list->push_back( PropertyInfo( Variant::REAL, "fovx" , PROPERTY_HINT_RANGE, "1,179,0.1",PROPERTY_USAGE_EDITOR) );
else
p_list->push_back( PropertyInfo( Variant::REAL, "fovy" , PROPERTY_HINT_RANGE, "1,179,0.1",PROPERTY_USAGE_EDITOR) );
} break;
case PROJECTION_ORTHOGONAL: {
p_list->push_back( PropertyInfo( Variant::REAL, "size" , PROPERTY_HINT_RANGE, "1,16384,0.01",PROPERTY_USAGE_NOEDITOR ) );
if (keep_aspect==KEEP_WIDTH)
p_list->push_back( PropertyInfo( Variant::REAL, "sizex" , PROPERTY_HINT_RANGE, "0.1,16384,0.01",PROPERTY_USAGE_EDITOR) );
else
p_list->push_back( PropertyInfo( Variant::REAL, "sizey" , PROPERTY_HINT_RANGE, "0.1,16384,0.01",PROPERTY_USAGE_EDITOR) );
} break;
}
p_list->push_back( PropertyInfo( Variant::REAL, "near" , PROPERTY_HINT_EXP_RANGE, "0.01,4096.0,0.01") );
p_list->push_back( PropertyInfo( Variant::REAL, "far" , PROPERTY_HINT_EXP_RANGE, "0.01,4096.0,0.01") );
p_list->push_back( PropertyInfo( Variant::INT, "keep_aspect",PROPERTY_HINT_ENUM,"Keep Width,Keep Height") );
p_list->push_back( PropertyInfo( Variant::BOOL, "current" ) );
p_list->push_back( PropertyInfo( Variant::INT, "cull_mask",PROPERTY_HINT_LAYERS_3D_RENDER ) );
p_list->push_back( PropertyInfo( Variant::OBJECT, "environment",PROPERTY_HINT_RESOURCE_TYPE,"Environment" ) );
p_list->push_back( PropertyInfo( Variant::REAL, "h_offset" ) );
p_list->push_back( PropertyInfo( Variant::REAL, "v_offset" ) );
}
void Camera::_update_camera() {
Transform tr = get_camera_transform();
tr.origin+=tr.basis.get_axis(1)*v_offset;
tr.origin+=tr.basis.get_axis(0)*h_offset;
VisualServer::get_singleton()->camera_set_transform( camera, tr );
// here goes listener stuff
// if (viewport_ptr && is_inside_scene() && is_current())
// get_viewport()->_camera_transform_changed_notify();
if (is_inside_tree() && is_current()) {
get_viewport()->_camera_transform_changed_notify();
}
if (is_current() && get_world().is_valid()) {
get_world()->_update_camera(this);
}
}
void Camera::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_ENTER_WORLD: {
bool first_camera = get_viewport()->_camera_add(this);
if (!get_tree()->is_node_being_edited(this) && (current || first_camera))
make_current();
} break;
case NOTIFICATION_TRANSFORM_CHANGED: {
_request_camera_update();
} break;
case NOTIFICATION_EXIT_WORLD: {
if (!get_tree()->is_node_being_edited(this)) {
if (is_current()) {
clear_current();
current=true; //keep it true
} else {
current=false;
}
}
get_viewport()->_camera_remove(this);
} break;
case NOTIFICATION_BECAME_CURRENT: {
if (get_world().is_valid()) {
get_world()->_register_camera(this);
}
} break;
case NOTIFICATION_LOST_CURRENT: {
if (get_world().is_valid()) {
get_world()->_remove_camera(this);
}
} break;
}
}
Transform Camera::get_camera_transform() const {
return get_global_transform().orthonormalized();
}
void Camera::set_perspective(float p_fovy_degrees, float p_z_near, float p_z_far) {
if (!force_change && fov==p_fovy_degrees && p_z_near==near && p_z_far==far && mode==PROJECTION_PERSPECTIVE)
return;
fov=p_fovy_degrees;
near=p_z_near;
far=p_z_far;
mode=PROJECTION_PERSPECTIVE;
VisualServer::get_singleton()->camera_set_perspective(camera,fov,near,far);
update_gizmo();
force_change=false;
}
void Camera::set_orthogonal(float p_size, float p_z_near, float p_z_far) {
if (!force_change && size==p_size && p_z_near==near && p_z_far==far && mode==PROJECTION_ORTHOGONAL)
return;
size = p_size;
near=p_z_near;
far=p_z_far;
mode=PROJECTION_ORTHOGONAL;
force_change=false;
VisualServer::get_singleton()->camera_set_orthogonal(camera,size,near,far);
update_gizmo();
}
RID Camera::get_camera() const {
return camera;
};
void Camera::make_current() {
current=true;
if (!is_inside_tree())
return;
get_viewport()->_camera_set(this);
//get_scene()->call_group(SceneMainLoop::GROUP_CALL_REALTIME,camera_group,"_camera_make_current",this);
}
void Camera::clear_current() {
current=false;
if (!is_inside_tree())
return;
if (get_viewport()->get_camera()==this) {
get_viewport()->_camera_set(NULL);
get_viewport()->_camera_make_next_current(this);
}
}
bool Camera::is_current() const {
if (is_inside_tree() && !get_tree()->is_node_being_edited(this)) {
return get_viewport()->get_camera()==this;
} else
return current;
return false;
}
bool Camera::_can_gizmo_scale() const {
return false;
}
Vector3 Camera::project_ray_normal(const Point2& p_pos) const {
Vector3 ray = project_local_ray_normal(p_pos);
return get_camera_transform().basis.xform(ray).normalized();
};
Vector3 Camera::project_local_ray_normal(const Point2& p_pos) const {
if (!is_inside_tree()) {
ERR_EXPLAIN("Camera is not inside scene.");
ERR_FAIL_COND_V(!is_inside_tree(),Vector3());
}
#if 0
Size2 viewport_size = get_viewport()->get_visible_rect().size;
Vector2 cpos = p_pos;
#else
Size2 viewport_size = get_viewport()->get_camera_rect_size();
Vector2 cpos = get_viewport()->get_camera_coords(p_pos);
#endif
Vector3 ray;
if (mode==PROJECTION_ORTHOGONAL) {
ray=Vector3(0,0,-1);
} else {
CameraMatrix cm;
cm.set_perspective(fov,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
float screen_w,screen_h;
cm.get_viewport_size(screen_w,screen_h);
ray=Vector3( ((cpos.x/viewport_size.width)*2.0-1.0)*screen_w, ((1.0-(cpos.y/viewport_size.height))*2.0-1.0)*screen_h,-near).normalized();
}
return ray;
};
Vector3 Camera::project_ray_origin(const Point2& p_pos) const {
if (!is_inside_tree()) {
ERR_EXPLAIN("Camera is not inside scene.");
ERR_FAIL_COND_V(!is_inside_tree(),Vector3());
}
#if 0
Size2 viewport_size = get_viewport()->get_visible_rect().size;
Vector2 cpos = p_pos;
#else
Size2 viewport_size = get_viewport()->get_camera_rect_size();
Vector2 cpos = get_viewport()->get_camera_coords(p_pos);
#endif
ERR_FAIL_COND_V( viewport_size.y == 0, Vector3() );
// float aspect = viewport_size.x / viewport_size.y;
if (mode == PROJECTION_PERSPECTIVE) {
return get_camera_transform().origin;
} else {
Vector2 pos = cpos / viewport_size;
float vsize,hsize;
if (keep_aspect==KEEP_WIDTH) {
vsize = size/viewport_size.get_aspect();
hsize = size;
} else {
hsize = size*viewport_size.get_aspect();
vsize = size;
}
Vector3 ray;
ray.x = pos.x * (hsize) - hsize/2;
ray.y = (1.0 - pos.y) * (vsize) - vsize/2;
ray.z = -near;
ray = get_camera_transform().xform(ray);
return ray;
};
};
bool Camera::is_position_behind(const Vector3& p_pos) const {
Transform t = get_global_transform();
Vector3 eyedir = -get_global_transform().basis.get_axis(2).normalized();
return eyedir.dot(p_pos) < (eyedir.dot(t.origin)+near);
}
Point2 Camera::unproject_position(const Vector3& p_pos) const {
if (!is_inside_tree()) {
ERR_EXPLAIN("Camera is not inside scene.");
ERR_FAIL_COND_V(!is_inside_tree(),Vector2());
}
Size2 viewport_size = get_viewport()->get_visible_rect().size;
CameraMatrix cm;
if (mode==PROJECTION_ORTHOGONAL)
cm.set_orthogonal(size,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
else
cm.set_perspective(fov,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
Plane p(get_camera_transform().xform_inv(p_pos),1.0);
p=cm.xform4(p);
p.normal/=p.d;
Point2 res;
res.x = (p.normal.x * 0.5 + 0.5) * viewport_size.x;
res.y = (-p.normal.y * 0.5 + 0.5) * viewport_size.y;
return res;
}
Vector3 Camera::project_position(const Point2& p_point) const {
if (!is_inside_tree()) {
ERR_EXPLAIN("Camera is not inside scene.");
ERR_FAIL_COND_V(!is_inside_tree(),Vector3());
}
Size2 viewport_size = get_viewport()->get_visible_rect().size;
CameraMatrix cm;
if (mode==PROJECTION_ORTHOGONAL)
cm.set_orthogonal(size,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
else
cm.set_perspective(fov,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
Size2 vp_size;
cm.get_viewport_size(vp_size.x,vp_size.y);
Vector2 point;
point.x = (p_point.x/viewport_size.x) * 2.0 - 1.0;
point.y = (1.0-(p_point.y/viewport_size.y)) * 2.0 - 1.0;
point*=vp_size;
Vector3 p(point.x,point.y,-near);
return get_camera_transform().xform(p);
}
/*
void Camera::_camera_make_current(Node *p_camera) {
if (p_camera==this) {
VisualServer::get_singleton()->viewport_attach_camera(viewport_id,camera);
active=true;
} else {
if (active && p_camera==NULL) {
//detech camera because no one else will claim it
VisualServer::get_singleton()->viewport_attach_camera(viewport_id,RID());
}
active=false;
}
}
*/
void Camera::set_environment(const Ref<Environment>& p_environment) {
environment=p_environment;
if (environment.is_valid())
VS::get_singleton()->camera_set_environment(camera,environment->get_rid());
else
VS::get_singleton()->camera_set_environment(camera,RID());
}
Ref<Environment> Camera::get_environment() const {
return environment;
}
void Camera::set_keep_aspect_mode(KeepAspect p_aspect) {
keep_aspect=p_aspect;
VisualServer::get_singleton()->camera_set_use_vertical_aspect(camera,p_aspect==KEEP_WIDTH);
_change_notify();
}
Camera::KeepAspect Camera::get_keep_aspect_mode() const{
return keep_aspect;
}
void Camera::_bind_methods() {
ClassDB::bind_method( _MD("project_ray_normal","screen_point"), &Camera::project_ray_normal);
ClassDB::bind_method( _MD("project_local_ray_normal","screen_point"), &Camera::project_local_ray_normal);
ClassDB::bind_method( _MD("project_ray_origin","screen_point"), &Camera::project_ray_origin);
ClassDB::bind_method( _MD("unproject_position","world_point"), &Camera::unproject_position);
ClassDB::bind_method( _MD("is_position_behind","world_point"), &Camera::is_position_behind);
ClassDB::bind_method( _MD("project_position","screen_point"), &Camera::project_position);
ClassDB::bind_method( _MD("set_perspective","fov","z_near","z_far"),&Camera::set_perspective );
ClassDB::bind_method( _MD("set_orthogonal","size","z_near","z_far"),&Camera::set_orthogonal );
ClassDB::bind_method( _MD("make_current"),&Camera::make_current );
ClassDB::bind_method( _MD("clear_current"),&Camera::clear_current );
ClassDB::bind_method( _MD("is_current"),&Camera::is_current );
ClassDB::bind_method( _MD("get_camera_transform"),&Camera::get_camera_transform );
ClassDB::bind_method( _MD("get_fov"),&Camera::get_fov );
ClassDB::bind_method( _MD("get_size"),&Camera::get_size );
ClassDB::bind_method( _MD("get_zfar"),&Camera::get_zfar );
ClassDB::bind_method( _MD("get_znear"),&Camera::get_znear );
ClassDB::bind_method( _MD("get_projection"),&Camera::get_projection );
ClassDB::bind_method( _MD("set_h_offset","ofs"),&Camera::set_h_offset );
ClassDB::bind_method( _MD("get_h_offset"),&Camera::get_h_offset );
ClassDB::bind_method( _MD("set_v_offset","ofs"),&Camera::set_v_offset );
ClassDB::bind_method( _MD("get_v_offset"),&Camera::get_v_offset );
ClassDB::bind_method( _MD("set_cull_mask","mask"),&Camera::set_cull_mask );
ClassDB::bind_method( _MD("get_cull_mask"),&Camera::get_cull_mask );
ClassDB::bind_method( _MD("set_environment","env:Environment"),&Camera::set_environment );
ClassDB::bind_method( _MD("get_environment:Environment"),&Camera::get_environment );
ClassDB::bind_method( _MD("set_keep_aspect_mode","mode"),&Camera::set_keep_aspect_mode );
ClassDB::bind_method( _MD("get_keep_aspect_mode"),&Camera::get_keep_aspect_mode );
//ClassDB::bind_method( _MD("_camera_make_current"),&Camera::_camera_make_current );
BIND_CONSTANT( PROJECTION_PERSPECTIVE );
BIND_CONSTANT( PROJECTION_ORTHOGONAL );
BIND_CONSTANT( KEEP_WIDTH );
BIND_CONSTANT( KEEP_HEIGHT );
}
float Camera::get_fov() const {
return fov;
}
float Camera::get_size() const {
return size;
}
float Camera::get_znear() const {
return near;
}
float Camera::get_zfar() const {
return far;
}
Camera::Projection Camera::get_projection() const {
return mode;
}
void Camera::set_cull_mask(uint32_t p_layers) {
layers=p_layers;
VisualServer::get_singleton()->camera_set_cull_mask(camera,layers);
}
uint32_t Camera::get_cull_mask() const{
return layers;
}
Vector<Plane> Camera::get_frustum() const {
ERR_FAIL_COND_V(!is_inside_world(),Vector<Plane>());
Size2 viewport_size = get_viewport()->get_visible_rect().size;
CameraMatrix cm;
if (mode==PROJECTION_PERSPECTIVE)
cm.set_perspective(fov,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
else
cm.set_orthogonal(size,viewport_size.get_aspect(),near,far,keep_aspect==KEEP_WIDTH);
return cm.get_projection_planes(get_camera_transform());
}
void Camera::set_v_offset(float p_offset) {
v_offset=p_offset;
_update_camera();;
}
float Camera::get_v_offset() const {
return v_offset;
}
void Camera::set_h_offset(float p_offset) {
h_offset=p_offset;
_update_camera();
}
float Camera::get_h_offset() const {
return h_offset;
}
Camera::Camera() {
camera = VisualServer::get_singleton()->camera_create();
size=1;
fov=0;
near=0;
far=0;
current=false;
force_change=false;
mode=PROJECTION_PERSPECTIVE;
set_perspective(60.0,0.1,100.0);
keep_aspect=KEEP_HEIGHT;
layers=0xfffff;
v_offset=0;
h_offset=0;
VisualServer::get_singleton()->camera_set_cull_mask(camera,layers);
//active=false;
set_notify_transform(true);
}
Camera::~Camera() {
VisualServer::get_singleton()->free(camera);
}
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