💿🐜 Antkeeper source code https://antkeeper.com
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/*
* 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 "spotlight.hpp"
#include "configuration.hpp"
#include "animation/ease.hpp"
#include <cmath>
using namespace vmq::operators;
static float3 interpolate_direction(const float3& x, const float3& y, float a)
{
quaternion<float> q0 = vmq::rotation(global_forward, x);
quaternion<float> q1 = vmq::rotation(global_forward, y);
return vmq::normalize(vmq::slerp(q0, q1, a) * global_forward);
}
spotlight::spotlight():
direction(global_forward, interpolate_direction),
attenuation(float3{1, 0, 0}, ease<float3>::linear),
cutoff(float2{vmq::pi<float>, vmq::pi<float>}, ease<float2>::linear),
cosine_cutoff(float2{std::cos(vmq::pi<float>), std::cos(vmq::pi<float>)}, ease<float2>::linear)
{}
void spotlight::set_attenuation(const float3& attenuation)
{
this->attenuation[1] = attenuation;
}
void spotlight::set_cutoff(const float2& cutoff)
{
this->cutoff[1] = cutoff;
this->cosine_cutoff[1] = {std::cos(cutoff.x), std::cos(cutoff.y)};
}
void spotlight::update_tweens()
{
light::update_tweens();
direction.update();
attenuation.update();
cutoff.update();
cosine_cutoff.update();
}
void spotlight::transformed()
{
direction[1] = vmq::normalize(get_transform().rotation * global_forward);
}