💿🐜 Antkeeper source code https://antkeeper.com
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

45 lines
1.4 KiB

/*
* Copyright (C) 2020 Christopher J. Howard
*
* This file is part of Antkeeper source code.
*
* Antkeeper source code is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Antkeeper source code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
*/
#include "directional-light.hpp"
#include "configuration.hpp"
#include "math/math.hpp"
static float3 interpolate_direction(const float3& x, const float3& y, float a)
{
math::quaternion<float> q0 = math::rotation(global_forward, x);
math::quaternion<float> q1 = math::rotation(global_forward, y);
return math::normalize(math::slerp(q0, q1, a) * global_forward);
}
directional_light::directional_light():
direction(global_forward, interpolate_direction)
{}
void directional_light::update_tweens()
{
light::update_tweens();
direction.update();
}
void directional_light::transformed()
{
direction[1] = math::normalize(get_transform().rotation * global_forward);
}