godot/scene/3d/interpolated_camera.cpp

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/*************************************************************************/
/* interpolated_camera.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
/* 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_TREE: {
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if (get_tree()->is_editor_hint() && enabled)
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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();
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Transform target_xform = node->get_global_transform();
Transform local_transform = get_global_transform();
local_transform = local_transform.interpolate_with(target_xform, delta);
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set_global_transform(local_transform);
if (node->cast_to<Camera>()) {
Camera *cam = node->cast_to<Camera>();
if (cam->get_projection() == get_projection()) {
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float new_near = Math::lerp(get_znear(), cam->get_znear(), delta);
float new_far = Math::lerp(get_zfar(), cam->get_zfar(), delta);
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if (cam->get_projection() == PROJECTION_ORTHOGONAL) {
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float size = Math::lerp(get_size(), cam->get_size(), delta);
set_orthogonal(size, new_near, new_far);
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} else {
float fov = Math::lerp(get_fov(), cam->get_fov(), delta);
set_perspective(fov, new_near, new_far);
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}
}
}
}
} 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);
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}
void InterpolatedCamera::set_target_path(const NodePath &p_path) {
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target = p_path;
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}
NodePath InterpolatedCamera::get_target_path() const {
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return target;
}
void InterpolatedCamera::set_interpolation_enabled(bool p_enable) {
if (enabled == p_enable)
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return;
enabled = p_enable;
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if (p_enable) {
if (is_inside_tree() && get_tree()->is_editor_hint())
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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;
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}
real_t InterpolatedCamera::get_speed() const {
return speed;
}
void InterpolatedCamera::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_target_path", "target_path"), &InterpolatedCamera::set_target_path);
ClassDB::bind_method(D_METHOD("get_target_path"), &InterpolatedCamera::get_target_path);
ClassDB::bind_method(D_METHOD("set_target", "target:Camera"), &InterpolatedCamera::_set_target);
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ClassDB::bind_method(D_METHOD("set_speed", "speed"), &InterpolatedCamera::set_speed);
ClassDB::bind_method(D_METHOD("get_speed"), &InterpolatedCamera::get_speed);
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ClassDB::bind_method(D_METHOD("set_interpolation_enabled", "target_path"), &InterpolatedCamera::set_interpolation_enabled);
ClassDB::bind_method(D_METHOD("is_interpolation_enabled"), &InterpolatedCamera::is_interpolation_enabled);
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ADD_PROPERTY(PropertyInfo(Variant::NODE_PATH, "target"), "set_target_path", "get_target_path");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "speed"), "set_speed", "get_speed");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "enabled"), "set_interpolation_enabled", "is_interpolation_enabled");
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}
InterpolatedCamera::InterpolatedCamera() {
enabled = false;
speed = 1;
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}