godot/scene/3d/interpolated_camera.cpp

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2014-02-10 09:10:30 +08:00
/*************************************************************************/
/* interpolated_camera.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2014 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 "interpolated_camera.h"
void InterpolatedCamera::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_ENTER_SCENE: {
if (get_scene()->is_editor_hint() && enabled)
set_fixed_process(false);
} break;
case NOTIFICATION_PROCESS: {
if (!enabled)
break;
if (has_node(target)) {
Spatial *node = get_node(target)->cast_to<Spatial>();
if (!node)
break;
float delta = speed*get_process_delta_time();
Transform target_xform = node->get_global_transform();
Transform local_transform = get_global_transform();
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local_transform = local_transform.interpolate_with(target_xform,delta);
set_global_transform(local_transform);
if (node->cast_to<Camera>()) {
Camera *cam = node->cast_to<Camera>();
if (cam->get_projection()==get_projection()) {
float new_near = Math::lerp(get_znear(),cam->get_znear(),delta);
float new_far = Math::lerp(get_zfar(),cam->get_zfar(),delta);
if (cam->get_projection()==PROJECTION_ORTHOGONAL) {
float size = Math::lerp(get_size(),cam->get_size(),delta);
set_orthogonal(size,new_near,new_far);
} else {
float fov = Math::lerp(get_fov(),cam->get_fov(),delta);
set_perspective(fov,new_near,new_far);
}
}
}
}
} break;
}
}
void InterpolatedCamera::_set_target(const Object *p_target) {
ERR_FAIL_NULL(p_target);
set_target(p_target->cast_to<Spatial>());
}
void InterpolatedCamera::set_target(const Spatial *p_target) {
ERR_FAIL_NULL(p_target);
target=get_path_to(p_target);
}
void InterpolatedCamera::set_target_path(const NodePath& p_path){
target=p_path;
}
NodePath InterpolatedCamera::get_target_path() const{
return target;
}
void InterpolatedCamera::set_interpolation_enabled(bool p_enable) {
if (enabled==p_enable)
return;
enabled=p_enable;
if (p_enable) {
if (is_inside_scene() && get_scene()->is_editor_hint())
return;
set_process(true);
} else
set_process(false);
}
bool InterpolatedCamera::is_interpolation_enabled() const {
return enabled;
}
void InterpolatedCamera::set_speed(real_t p_speed) {
speed=p_speed;
}
real_t InterpolatedCamera::get_speed() const {
return speed;
}
void InterpolatedCamera::_bind_methods() {
ObjectTypeDB::bind_method(_MD("set_target_path","target_path"),&InterpolatedCamera::set_target_path);
ObjectTypeDB::bind_method(_MD("get_target_path"),&InterpolatedCamera::get_target_path);
ObjectTypeDB::bind_method(_MD("set_target","target:Camera"),&InterpolatedCamera::_set_target);
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ObjectTypeDB::bind_method(_MD("set_speed","speed"),&InterpolatedCamera::set_speed);
ObjectTypeDB::bind_method(_MD("get_speed"),&InterpolatedCamera::get_speed);
ObjectTypeDB::bind_method(_MD("set_interpolation_enabled","target_path"),&InterpolatedCamera::set_interpolation_enabled);
ObjectTypeDB::bind_method(_MD("is_interpolation_enabled"),&InterpolatedCamera::is_interpolation_enabled);
ADD_PROPERTY( PropertyInfo(Variant::NODE_PATH,"target"), _SCS("set_target_path"), _SCS("get_target_path") );
ADD_PROPERTY( PropertyInfo(Variant::REAL,"speed"), _SCS("set_speed"), _SCS("get_speed") );
ADD_PROPERTY( PropertyInfo(Variant::BOOL,"enabled"), _SCS("set_interpolation_enabled"), _SCS("is_interpolation_enabled") );
}
InterpolatedCamera::InterpolatedCamera() {
enabled=false;
speed=1;
}