/*
  ==============================================================================

   This file is part of the JUCE framework.
   Copyright (c) Raw Material Software Limited

   JUCE is an open source framework subject to commercial or open source
   licensing.

   By downloading, installing, or using the JUCE framework, or combining the
   JUCE framework with any other source code, object code, content or any other
   copyrightable work, you agree to the terms of the JUCE End User Licence
   Agreement, and all incorporated terms including the JUCE Privacy Policy and
   the JUCE Website Terms of Service, as applicable, which will bind you. If you
   do not agree to the terms of these agreements, we will not license the JUCE
   framework to you, and you must discontinue the installation or download
   process and cease use of the JUCE framework.

   JUCE End User Licence Agreement: https://juce.com/legal/juce-9-licence/
   JUCE Privacy Policy: https://juce.com/juce-privacy-policy
   JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/

   Or:

   You may also use this code under the terms of the AGPLv3:
   https://www.gnu.org/licenses/agpl-3.0.en.html

   THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
   WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.

  ==============================================================================
*/

namespace juce
{

//==============================================================================
/** A simple implementation of the b2Draw class, used to draw a Box2D world.

    To use it, simply create an instance of this class in your paint() method,
    and call its render() method.

    @tags{Box2D}
*/
class Box2DRenderer   : public b2Draw

{
public:
    Box2DRenderer() noexcept;

    /** Renders the world.

        @param g        the context to render into
        @param world    the world to render
        @param box2DWorldLeft   the left coordinate of the area of the world to be drawn
        @param box2DWorldTop    the top coordinate of the area of the world to be drawn
        @param box2DWorldRight  the right coordinate of the area of the world to be drawn
        @param box2DWorldBottom the bottom coordinate of the area of the world to be drawn
        @param targetArea   the area within the target context onto which the source
                            world rectangle should be mapped
    */
    void render (Graphics& g,
                 b2World& world,
                 float box2DWorldLeft, float box2DWorldTop,
                 float box2DWorldRight, float box2DWorldBottom,
                 const Rectangle<float>& targetArea);

    // b2Draw methods:
    void DrawPolygon (const b2Vec2*, int32, const b2Color&) override;
    void DrawSolidPolygon (const b2Vec2*, int32, const b2Color&) override;
    void DrawCircle (const b2Vec2& center, float32 radius, const b2Color&) override;
    void DrawSolidCircle (const b2Vec2& center, float32 radius, const b2Vec2& axis, const b2Color&) override;
    void DrawSegment (const b2Vec2& p1, const b2Vec2& p2, const b2Color&) override;
    void DrawTransform (const b2Transform& xf) override;

    /** Converts a b2Color to a juce Colour. */
    virtual Colour getColour (const b2Color&) const;
    /** Returns the thickness to use for drawing outlines. */
    virtual float getLineThickness() const;

protected:
    Graphics* graphics;

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (Box2DRenderer)
};

} // namespace juce
