💿🐜 Antkeeper source code
https://antkeeper.com
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168 lines
4.4 KiB
168 lines
4.4 KiB
/*
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* Copyright (C) 2017-2019 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 "brush.hpp"
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#include "camera-rig.hpp"
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#include <stdexcept>
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Brush::Brush(const Model* model, Animator* animator):
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wasActive(false)
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{
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// Setup model instance
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modelInstance.setModel(model);
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pressedDistance = -0.25f;
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releasedDistance = 0.5f;
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pressDuration = 0.25f;
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releaseDuration = 0.175f;
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tipDistance = releasedDistance;
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lastTipDistance = tipDistance;
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painting = false;
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speed = 0.0f;
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mousePosition = Vector2(0.0f);
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lastMousePosition = mousePosition;
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screenDimensions = Vector2(1.0f);
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// Construct press animation clip
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AnimationChannel<float>* channel;
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pressClip.setInterpolator(easeOutCubic<float>);
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channel = pressClip.addChannel(0);
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channel->insertKeyframe(0.0f, 0.0f);
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channel->insertKeyframe(pressDuration, 1.0f);
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// Construct release animation clip
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releaseClip.setInterpolator(easeOutCubic<float>);
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channel = releaseClip.addChannel(0);
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channel->insertKeyframe(0.0f, 0.0f);
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channel->insertKeyframe(releaseDuration, 1.0f);
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// Setup press animation callbacks
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pressAnimation.setTimeFrame(pressClip.getTimeFrame());
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pressAnimation.setClip(&pressClip);
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pressAnimation.setAnimateCallback
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(
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[this](std::size_t id, float t)
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{
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this->tipDistance = lerp(lastTipDistance, pressedDistance, t);
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}
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);
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pressAnimation.setEndCallback
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(
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[this]()
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{
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this->painting = true;
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}
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);
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// Setup release animation callbacks
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releaseAnimation.setTimeFrame(releaseClip.getTimeFrame());
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releaseAnimation.setClip(&releaseClip);
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releaseAnimation.setAnimateCallback
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(
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[this](std::size_t id, float t)
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{
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this->tipDistance = lerp(lastTipDistance, releasedDistance, t);
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}
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);
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// Add animations to animator
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animator->addAnimation(&pressAnimation);
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animator->addAnimation(&releaseAnimation);
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}
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Brush::~Brush()
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{}
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void Brush::update(float dt)
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{
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Vector2 screenCenter = Vector2(screenDimensions.x * 0.5f, screenDimensions.y * 0.5f);
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// Calculate mouse movement speed
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Vector2 mouseDifference = (mousePosition - lastMousePosition) / std::min<float>(screenDimensions.x, screenDimensions.y);
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Vector2 mouseDirection(0.0f);
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float mouseSpeed = glm::length2(mouseDifference);
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if (mouseSpeed != 0.0f)
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{
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mouseSpeed = std::sqrt(mouseSpeed);
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mouseDirection = mouseDifference * (1.0f / mouseSpeed);
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}
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this->lastMousePosition = this->mousePosition;
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Vector3 tiltDirection = Vector3(mouseDirection.x, 0.0f, mouseDirection.y);
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float tiltMagnitude = std::min<float>(0.5f, mouseSpeed * 10.0f);
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if (!tiltMagnitude)
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{
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tiltDirection = Vector3(0, 1, 0);
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}
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Vector2 tiltForce = mouseDirection * mouseSpeed;
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velocity += tiltForce;
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Quaternion tilt = glm::normalize(glm::slerp(Quaternion(1, 0, 0, 0), glm::normalize(glm::rotation(Vector3(0, 1, 0), tiltDirection)), tiltMagnitude * 0.0f));
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Quaternion alignment = glm::angleAxis(orbitCam->getAzimuth(), Vector3(0, 1, 0));
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Quaternion rotation = glm::normalize(alignment * tilt);
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Vector3 translation = pick + rotation * Vector3(0, tipDistance, 0);
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// Set tool position
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modelInstance.setTranslation(translation);
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modelInstance.setRotation(rotation);
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if (active && !wasActive)
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{
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modelInstance.resetTweens();
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modelInstance.setActive(true);
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}
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else if (!active && wasActive)
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{
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modelInstance.setActive(false);
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}
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wasActive = active;
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}
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void Brush::press()
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{
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lastTipDistance = tipDistance;
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releaseAnimation.stop();
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pressAnimation.rewind();
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pressAnimation.play();
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}
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void Brush::release()
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{
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lastTipDistance = tipDistance;
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pressAnimation.stop();
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releaseAnimation.rewind();
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releaseAnimation.play();
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painting = false;
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}
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void Brush::setTiltParams(const Vector2& mousePosition, const Vector2& screenDimensions)
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{
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this->mousePosition = mousePosition;
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this->screenDimensions = screenDimensions;
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}
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