Tool_ConvexVolume.h

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//
// Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
//
// This software is provided 'as-is', without any express or implied
// warranty.  In no event will the authors be held liable for any damages
// arising from the use of this software.
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 1. The origin of this software must not be misrepresented; you must not
//    claim that you wrote the original software. If you use this software
//    in a product, an acknowledgment in the product documentation would be
//    appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//    misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
//
 
#pragma once
 
#include "Sample.h"
 
class ConvexVolumeTool : public SampleTool
{
    Sample* sample = nullptr;
 
    int areaType = SAMPLE_POLYAREA_GRASS;
    float polyOffset = 0.0f;
    float boxHeight = 6.0f;
    float boxDescent = 1.0f;
 
    static constexpr int MAX_PTS = 12;
 
    int hull[MAX_PTS] {};
    int numHull = 0;
 
    std::vector<float> points;
    [[nodiscard]] int numPoints() const { return static_cast<int>(points.size()) / 3; }
 
public:
    SampleToolType type() override { return SampleToolType::CONVEX_VOLUME; }
    void init(Sample* sample) override { this->sample = sample; }
    void reset() override
    {
        points.clear();
        numHull = 0;
    }
 
    void singleStep() override {}
    void update(const float) override {}
    void render() override;
 
    void onClick(const float* s, const float* p, bool shift) override;
    void onToggle() override {}
 
    void drawMenuUI() override;
    void drawOverlayUI() override;
};