💿🐜 Antkeeper source code
https://antkeeper.com
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88 lines
2.5 KiB
88 lines
2.5 KiB
/*
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* Copyright (C) 2021 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "screen-transition.hpp"
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#include "renderer/material-flags.hpp"
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#include <functional>
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screen_transition::screen_transition()
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{
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// Setup material
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material.set_flags(MATERIAL_FLAG_TRANSLUCENT | MATERIAL_FLAG_X_RAY);
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progress = material.add_property<float>("progress");
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// Setup billboard
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billboard.set_material(&material);
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billboard.set_active(false);
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// Add single channel to transition animation
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channel = animation.add_channel(0);
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// Setup animation start callback to show transition billboard
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animation.set_start_callback
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(
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std::bind(&scene_object_base::set_active, &billboard, true)
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);
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// Setup animation end callback to hide transition billboard
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animation.set_end_callback
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(
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std::bind(&scene_object_base::set_active, &billboard, false)
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);
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// Setup animation frame callback to update transition progress material property
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animation.set_frame_callback
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(
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[this](int channel, float progress)
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{
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this->progress->set_value(progress);
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}
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);
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// Setup animation frame callback to update transition progress material property
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animation.set_frame_callback
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(
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[this](int channel, float progress)
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{
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this->progress->set_value(progress);
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}
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);
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}
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void screen_transition::transition(float duration, bool reverse, ::animation<float>::interpolator_type interpolator)
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{
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float initial_state = (reverse) ? 1.0f : 0.0f;
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float final_state = (reverse) ? 0.0f : 1.0f;
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// Build transition animation
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channel->remove_keyframes();
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channel->insert_keyframe({0.0f, initial_state});
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channel->insert_keyframe({duration, final_state});
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// Set transition animation interpolator
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animation.set_interpolator(interpolator);
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// Update tweens
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progress->set_value(initial_state);
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material.update_tweens();
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// Reset and play transition animation
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animation.stop();
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animation.play();
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}
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