113 lines
3.5 KiB
C++
113 lines
3.5 KiB
C++
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 5 End-User License
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Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
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27th April 2017).
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End User License Agreement: www.juce.com/juce-5-licence
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Privacy Policy: www.juce.com/juce-5-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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Box2DRenderer::Box2DRenderer() noexcept : graphics (nullptr)
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{
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SetFlags (e_shapeBit);
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}
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void Box2DRenderer::render (Graphics& g, b2World& world,
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float left, float top, float right, float bottom,
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const Rectangle<float>& target)
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{
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graphics = &g;
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g.addTransform (AffineTransform::fromTargetPoints (left, top, target.getX(), target.getY(),
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right, top, target.getRight(), target.getY(),
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left, bottom, target.getX(), target.getBottom()));
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world.SetDebugDraw (this);
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world.DrawDebugData();
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}
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Colour Box2DRenderer::getColour (const b2Color& c) const
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{
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return Colour::fromFloatRGBA (c.r, c.g, c.b, 1.0f);
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}
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float Box2DRenderer::getLineThickness() const
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{
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return 0.1f;
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}
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static void createPath (Path& p, const b2Vec2* vertices, int32 vertexCount)
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{
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p.startNewSubPath (vertices[0].x, vertices[0].y);
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for (int i = 1; i < vertexCount; ++i)
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p.lineTo (vertices[i].x, vertices[i].y);
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p.closeSubPath();
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}
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void Box2DRenderer::DrawPolygon (const b2Vec2* vertices, int32 vertexCount, const b2Color& color)
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{
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graphics->setColour (getColour (color));
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Path p;
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createPath (p, vertices, vertexCount);
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graphics->strokePath (p, PathStrokeType (getLineThickness()));
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}
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void Box2DRenderer::DrawSolidPolygon (const b2Vec2* vertices, int32 vertexCount, const b2Color& color)
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{
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graphics->setColour (getColour (color));
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Path p;
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createPath (p, vertices, vertexCount);
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graphics->fillPath (p);
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}
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void Box2DRenderer::DrawCircle (const b2Vec2& center, float32 radius, const b2Color& color)
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{
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graphics->setColour (getColour (color));
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graphics->drawEllipse (center.x - radius, center.y - radius,
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radius * 2.0f, radius * 2.0f,
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getLineThickness());
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}
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void Box2DRenderer::DrawSolidCircle (const b2Vec2& center, float32 radius, const b2Vec2& /*axis*/, const b2Color& colour)
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{
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graphics->setColour (getColour (colour));
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graphics->fillEllipse (center.x - radius, center.y - radius,
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radius * 2.0f, radius * 2.0f);
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}
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void Box2DRenderer::DrawSegment (const b2Vec2& p1, const b2Vec2& p2, const b2Color& color)
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{
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graphics->setColour (getColour (color));
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graphics->drawLine (p1.x, p1.y, p2.x, p2.y, getLineThickness());
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}
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void Box2DRenderer::DrawTransform (const b2Transform&)
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{
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}
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} // namespace juce
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