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570 lines
20 KiB
570 lines
20 KiB
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2015 - ROLI Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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Details of these licenses can be found at: www.gnu.org/licenses
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.juce.com for more information.
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==============================================================================
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*/
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DrawablePath::DrawablePath()
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{
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}
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DrawablePath::DrawablePath (const DrawablePath& other)
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: DrawableShape (other)
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{
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if (other.relativePath != nullptr)
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setPath (*other.relativePath);
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else
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setPath (other.path);
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}
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DrawablePath::~DrawablePath()
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{
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}
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Drawable* DrawablePath::createCopy() const
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{
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return new DrawablePath (*this);
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}
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//==============================================================================
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void DrawablePath::setPath (const Path& newPath)
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{
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path = newPath;
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pathChanged();
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}
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const Path& DrawablePath::getPath() const
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{
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return path;
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}
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const Path& DrawablePath::getStrokePath() const
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{
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return strokePath;
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}
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void DrawablePath::applyRelativePath (const RelativePointPath& newRelativePath, Expression::Scope* scope)
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{
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Path newPath;
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newRelativePath.createPath (newPath, scope);
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if (path != newPath)
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{
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path.swapWithPath (newPath);
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pathChanged();
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}
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}
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//==============================================================================
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class DrawablePath::RelativePositioner : public RelativeCoordinatePositionerBase
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{
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public:
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RelativePositioner (DrawablePath& comp)
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: RelativeCoordinatePositionerBase (comp),
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owner (comp)
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{
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}
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bool registerCoordinates() override
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{
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bool ok = true;
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jassert (owner.relativePath != nullptr);
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const RelativePointPath& relPath = *owner.relativePath;
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for (int i = 0; i < relPath.elements.size(); ++i)
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{
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RelativePointPath::ElementBase* const e = relPath.elements.getUnchecked(i);
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int numPoints;
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RelativePoint* const points = e->getControlPoints (numPoints);
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for (int j = numPoints; --j >= 0;)
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ok = addPoint (points[j]) && ok;
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}
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return ok;
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}
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void applyToComponentBounds() override
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{
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jassert (owner.relativePath != nullptr);
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ComponentScope scope (getComponent());
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owner.applyRelativePath (*owner.relativePath, &scope);
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}
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void applyNewBounds (const Rectangle<int>&) override
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{
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jassertfalse; // drawables can't be resized directly!
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}
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private:
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DrawablePath& owner;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (RelativePositioner)
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};
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void DrawablePath::setPath (const RelativePointPath& newRelativePath)
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{
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if (newRelativePath.containsAnyDynamicPoints())
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{
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if (relativePath == nullptr || newRelativePath != *relativePath)
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{
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relativePath = new RelativePointPath (newRelativePath);
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RelativePositioner* const p = new RelativePositioner (*this);
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setPositioner (p);
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p->apply();
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}
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}
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else
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{
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relativePath = nullptr;
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applyRelativePath (newRelativePath, nullptr);
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}
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}
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//==============================================================================
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const Identifier DrawablePath::valueTreeType ("Path");
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const Identifier DrawablePath::ValueTreeWrapper::nonZeroWinding ("nonZeroWinding");
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const Identifier DrawablePath::ValueTreeWrapper::point1 ("p1");
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const Identifier DrawablePath::ValueTreeWrapper::point2 ("p2");
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const Identifier DrawablePath::ValueTreeWrapper::point3 ("p3");
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//==============================================================================
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DrawablePath::ValueTreeWrapper::ValueTreeWrapper (const ValueTree& state_)
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: FillAndStrokeState (state_)
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{
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jassert (state.hasType (valueTreeType));
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}
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ValueTree DrawablePath::ValueTreeWrapper::getPathState()
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{
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return state.getOrCreateChildWithName (path, nullptr);
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}
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bool DrawablePath::ValueTreeWrapper::usesNonZeroWinding() const
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{
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return state [nonZeroWinding];
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}
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void DrawablePath::ValueTreeWrapper::setUsesNonZeroWinding (bool b, UndoManager* undoManager)
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{
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state.setProperty (nonZeroWinding, b, undoManager);
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}
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void DrawablePath::ValueTreeWrapper::readFrom (const RelativePointPath& p, UndoManager* undoManager)
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{
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setUsesNonZeroWinding (p.usesNonZeroWinding, undoManager);
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ValueTree pathTree (getPathState());
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pathTree.removeAllChildren (undoManager);
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for (int i = 0; i < p.elements.size(); ++i)
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pathTree.addChild (p.elements.getUnchecked(i)->createTree(), -1, undoManager);
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}
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void DrawablePath::ValueTreeWrapper::writeTo (RelativePointPath& p) const
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{
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p.usesNonZeroWinding = usesNonZeroWinding();
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RelativePoint points[3];
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const ValueTree pathTree (state.getChildWithName (path));
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const int num = pathTree.getNumChildren();
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for (int i = 0; i < num; ++i)
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{
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const Element e (pathTree.getChild(i));
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const int numCps = e.getNumControlPoints();
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for (int j = 0; j < numCps; ++j)
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points[j] = e.getControlPoint (j);
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RelativePointPath::ElementBase* newElement = nullptr;
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const Identifier t (e.getType());
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if (t == Element::startSubPathElement) newElement = new RelativePointPath::StartSubPath (points[0]);
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else if (t == Element::closeSubPathElement) newElement = new RelativePointPath::CloseSubPath();
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else if (t == Element::lineToElement) newElement = new RelativePointPath::LineTo (points[0]);
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else if (t == Element::quadraticToElement) newElement = new RelativePointPath::QuadraticTo (points[0], points[1]);
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else if (t == Element::cubicToElement) newElement = new RelativePointPath::CubicTo (points[0], points[1], points[2]);
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else jassertfalse;
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p.addElement (newElement);
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}
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}
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//==============================================================================
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const Identifier DrawablePath::ValueTreeWrapper::Element::mode ("mode");
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const Identifier DrawablePath::ValueTreeWrapper::Element::startSubPathElement ("Move");
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const Identifier DrawablePath::ValueTreeWrapper::Element::closeSubPathElement ("Close");
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const Identifier DrawablePath::ValueTreeWrapper::Element::lineToElement ("Line");
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const Identifier DrawablePath::ValueTreeWrapper::Element::quadraticToElement ("Quad");
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const Identifier DrawablePath::ValueTreeWrapper::Element::cubicToElement ("Cubic");
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const char* DrawablePath::ValueTreeWrapper::Element::cornerMode = "corner";
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const char* DrawablePath::ValueTreeWrapper::Element::roundedMode = "round";
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const char* DrawablePath::ValueTreeWrapper::Element::symmetricMode = "symm";
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DrawablePath::ValueTreeWrapper::Element::Element (const ValueTree& state_)
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: state (state_)
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{
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}
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DrawablePath::ValueTreeWrapper::Element::~Element()
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{
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}
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DrawablePath::ValueTreeWrapper DrawablePath::ValueTreeWrapper::Element::getParent() const
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{
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return ValueTreeWrapper (state.getParent().getParent());
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}
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DrawablePath::ValueTreeWrapper::Element DrawablePath::ValueTreeWrapper::Element::getPreviousElement() const
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{
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return Element (state.getSibling (-1));
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}
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int DrawablePath::ValueTreeWrapper::Element::getNumControlPoints() const noexcept
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{
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const Identifier i (state.getType());
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if (i == startSubPathElement || i == lineToElement) return 1;
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if (i == quadraticToElement) return 2;
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if (i == cubicToElement) return 3;
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return 0;
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}
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RelativePoint DrawablePath::ValueTreeWrapper::Element::getControlPoint (const int index) const
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{
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jassert (index >= 0 && index < getNumControlPoints());
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return RelativePoint (state [index == 0 ? point1 : (index == 1 ? point2 : point3)].toString());
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}
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Value DrawablePath::ValueTreeWrapper::Element::getControlPointValue (int index, UndoManager* undoManager)
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{
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jassert (index >= 0 && index < getNumControlPoints());
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return state.getPropertyAsValue (index == 0 ? point1 : (index == 1 ? point2 : point3), undoManager);
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}
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void DrawablePath::ValueTreeWrapper::Element::setControlPoint (const int index, const RelativePoint& point, UndoManager* undoManager)
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{
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jassert (index >= 0 && index < getNumControlPoints());
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state.setProperty (index == 0 ? point1 : (index == 1 ? point2 : point3), point.toString(), undoManager);
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}
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RelativePoint DrawablePath::ValueTreeWrapper::Element::getStartPoint() const
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{
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const Identifier i (state.getType());
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if (i == startSubPathElement)
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return getControlPoint (0);
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jassert (i == lineToElement || i == quadraticToElement || i == cubicToElement || i == closeSubPathElement);
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return getPreviousElement().getEndPoint();
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}
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RelativePoint DrawablePath::ValueTreeWrapper::Element::getEndPoint() const
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{
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const Identifier i (state.getType());
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if (i == startSubPathElement || i == lineToElement) return getControlPoint (0);
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if (i == quadraticToElement) return getControlPoint (1);
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if (i == cubicToElement) return getControlPoint (2);
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jassert (i == closeSubPathElement);
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return RelativePoint();
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}
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float DrawablePath::ValueTreeWrapper::Element::getLength (Expression::Scope* scope) const
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{
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const Identifier i (state.getType());
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if (i == lineToElement || i == closeSubPathElement)
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return getEndPoint().resolve (scope).getDistanceFrom (getStartPoint().resolve (scope));
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if (i == cubicToElement)
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{
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Path p;
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p.startNewSubPath (getStartPoint().resolve (scope));
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p.cubicTo (getControlPoint (0).resolve (scope), getControlPoint (1).resolve (scope), getControlPoint (2).resolve (scope));
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return p.getLength();
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}
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if (i == quadraticToElement)
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{
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Path p;
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p.startNewSubPath (getStartPoint().resolve (scope));
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p.quadraticTo (getControlPoint (0).resolve (scope), getControlPoint (1).resolve (scope));
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return p.getLength();
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}
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jassert (i == startSubPathElement);
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return 0;
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}
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String DrawablePath::ValueTreeWrapper::Element::getModeOfEndPoint() const
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{
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return state [mode].toString();
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}
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void DrawablePath::ValueTreeWrapper::Element::setModeOfEndPoint (const String& newMode, UndoManager* undoManager)
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{
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if (state.hasType (cubicToElement))
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state.setProperty (mode, newMode, undoManager);
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}
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void DrawablePath::ValueTreeWrapper::Element::convertToLine (UndoManager* undoManager)
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{
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const Identifier i (state.getType());
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if (i == quadraticToElement || i == cubicToElement)
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{
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ValueTree newState (lineToElement);
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Element e (newState);
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e.setControlPoint (0, getEndPoint(), undoManager);
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state = newState;
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}
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}
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void DrawablePath::ValueTreeWrapper::Element::convertToCubic (Expression::Scope* scope, UndoManager* undoManager)
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{
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const Identifier i (state.getType());
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if (i == lineToElement || i == quadraticToElement)
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{
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ValueTree newState (cubicToElement);
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Element e (newState);
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const RelativePoint start (getStartPoint());
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const RelativePoint end (getEndPoint());
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const Point<float> startResolved (start.resolve (scope));
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const Point<float> endResolved (end.resolve (scope));
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e.setControlPoint (0, startResolved + (endResolved - startResolved) * 0.3f, undoManager);
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e.setControlPoint (1, startResolved + (endResolved - startResolved) * 0.7f, undoManager);
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e.setControlPoint (2, end, undoManager);
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state = newState;
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}
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}
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void DrawablePath::ValueTreeWrapper::Element::convertToPathBreak (UndoManager* undoManager)
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{
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const Identifier i (state.getType());
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if (i != startSubPathElement)
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{
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ValueTree newState (startSubPathElement);
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Element e (newState);
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e.setControlPoint (0, getEndPoint(), undoManager);
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state = newState;
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}
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}
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namespace DrawablePathHelpers
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{
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static Point<float> findCubicSubdivisionPoint (float proportion, const Point<float> points[4])
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{
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const Point<float> mid1 (points[0] + (points[1] - points[0]) * proportion),
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mid2 (points[1] + (points[2] - points[1]) * proportion),
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mid3 (points[2] + (points[3] - points[2]) * proportion);
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const Point<float> newCp1 (mid1 + (mid2 - mid1) * proportion),
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newCp2 (mid2 + (mid3 - mid2) * proportion);
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return newCp1 + (newCp2 - newCp1) * proportion;
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}
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static Point<float> findQuadraticSubdivisionPoint (float proportion, const Point<float> points[3])
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{
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const Point<float> mid1 (points[0] + (points[1] - points[0]) * proportion),
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mid2 (points[1] + (points[2] - points[1]) * proportion);
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return mid1 + (mid2 - mid1) * proportion;
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}
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}
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float DrawablePath::ValueTreeWrapper::Element::findProportionAlongLine (Point<float> targetPoint, Expression::Scope* scope) const
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{
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using namespace DrawablePathHelpers;
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const Identifier pointType (state.getType());
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float bestProp = 0;
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if (pointType == cubicToElement)
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{
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RelativePoint rp1 (getStartPoint()), rp2 (getControlPoint (0)), rp3 (getControlPoint (1)), rp4 (getEndPoint());
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const Point<float> points[] = { rp1.resolve (scope), rp2.resolve (scope), rp3.resolve (scope), rp4.resolve (scope) };
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float bestDistance = std::numeric_limits<float>::max();
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for (int i = 110; --i >= 0;)
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{
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float prop = i > 10 ? ((i - 10) / 100.0f) : (bestProp + ((i - 5) / 1000.0f));
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const Point<float> centre (findCubicSubdivisionPoint (prop, points));
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const float distance = centre.getDistanceFrom (targetPoint);
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if (distance < bestDistance)
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{
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bestProp = prop;
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bestDistance = distance;
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}
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}
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}
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else if (pointType == quadraticToElement)
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{
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RelativePoint rp1 (getStartPoint()), rp2 (getControlPoint (0)), rp3 (getEndPoint());
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const Point<float> points[] = { rp1.resolve (scope), rp2.resolve (scope), rp3.resolve (scope) };
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float bestDistance = std::numeric_limits<float>::max();
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for (int i = 110; --i >= 0;)
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{
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float prop = i > 10 ? ((i - 10) / 100.0f) : (bestProp + ((i - 5) / 1000.0f));
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const Point<float> centre (findQuadraticSubdivisionPoint ((float) prop, points));
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const float distance = centre.getDistanceFrom (targetPoint);
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if (distance < bestDistance)
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{
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bestProp = prop;
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bestDistance = distance;
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}
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}
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}
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else if (pointType == lineToElement)
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{
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RelativePoint rp1 (getStartPoint()), rp2 (getEndPoint());
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const Line<float> line (rp1.resolve (scope), rp2.resolve (scope));
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bestProp = line.findNearestProportionalPositionTo (targetPoint);
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}
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return bestProp;
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}
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ValueTree DrawablePath::ValueTreeWrapper::Element::insertPoint (Point<float> targetPoint, Expression::Scope* scope, UndoManager* undoManager)
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{
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ValueTree newTree;
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const Identifier pointType (state.getType());
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if (pointType == cubicToElement)
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{
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float bestProp = findProportionAlongLine (targetPoint, scope);
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RelativePoint rp1 (getStartPoint()), rp2 (getControlPoint (0)), rp3 (getControlPoint (1)), rp4 (getEndPoint());
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const Point<float> points[] = { rp1.resolve (scope), rp2.resolve (scope), rp3.resolve (scope), rp4.resolve (scope) };
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const Point<float> mid1 (points[0] + (points[1] - points[0]) * bestProp),
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mid2 (points[1] + (points[2] - points[1]) * bestProp),
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mid3 (points[2] + (points[3] - points[2]) * bestProp);
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const Point<float> newCp1 (mid1 + (mid2 - mid1) * bestProp),
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newCp2 (mid2 + (mid3 - mid2) * bestProp);
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const Point<float> newCentre (newCp1 + (newCp2 - newCp1) * bestProp);
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setControlPoint (0, mid1, undoManager);
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setControlPoint (1, newCp1, undoManager);
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setControlPoint (2, newCentre, undoManager);
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setModeOfEndPoint (roundedMode, undoManager);
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Element newElement (newTree = ValueTree (cubicToElement));
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newElement.setControlPoint (0, newCp2, nullptr);
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newElement.setControlPoint (1, mid3, nullptr);
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newElement.setControlPoint (2, rp4, nullptr);
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state.getParent().addChild (newTree, state.getParent().indexOf (state) + 1, undoManager);
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}
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else if (pointType == quadraticToElement)
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{
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float bestProp = findProportionAlongLine (targetPoint, scope);
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RelativePoint rp1 (getStartPoint()), rp2 (getControlPoint (0)), rp3 (getEndPoint());
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const Point<float> points[] = { rp1.resolve (scope), rp2.resolve (scope), rp3.resolve (scope) };
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const Point<float> mid1 (points[0] + (points[1] - points[0]) * bestProp),
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mid2 (points[1] + (points[2] - points[1]) * bestProp);
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const Point<float> newCentre (mid1 + (mid2 - mid1) * bestProp);
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setControlPoint (0, mid1, undoManager);
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setControlPoint (1, newCentre, undoManager);
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setModeOfEndPoint (roundedMode, undoManager);
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|
|
Element newElement (newTree = ValueTree (quadraticToElement));
|
|
newElement.setControlPoint (0, mid2, nullptr);
|
|
newElement.setControlPoint (1, rp3, nullptr);
|
|
|
|
state.getParent().addChild (newTree, state.getParent().indexOf (state) + 1, undoManager);
|
|
}
|
|
else if (pointType == lineToElement)
|
|
{
|
|
RelativePoint rp1 (getStartPoint()), rp2 (getEndPoint());
|
|
const Line<float> line (rp1.resolve (scope), rp2.resolve (scope));
|
|
const Point<float> newPoint (line.findNearestPointTo (targetPoint));
|
|
|
|
setControlPoint (0, newPoint, undoManager);
|
|
|
|
Element newElement (newTree = ValueTree (lineToElement));
|
|
newElement.setControlPoint (0, rp2, nullptr);
|
|
|
|
state.getParent().addChild (newTree, state.getParent().indexOf (state) + 1, undoManager);
|
|
}
|
|
else if (pointType == closeSubPathElement)
|
|
{
|
|
}
|
|
|
|
return newTree;
|
|
}
|
|
|
|
void DrawablePath::ValueTreeWrapper::Element::removePoint (UndoManager* undoManager)
|
|
{
|
|
state.getParent().removeChild (state, undoManager);
|
|
}
|
|
|
|
//==============================================================================
|
|
void DrawablePath::refreshFromValueTree (const ValueTree& tree, ComponentBuilder& builder)
|
|
{
|
|
ValueTreeWrapper v (tree);
|
|
setComponentID (v.getID());
|
|
|
|
refreshFillTypes (v, builder.getImageProvider());
|
|
setStrokeType (v.getStrokeType());
|
|
|
|
RelativePointPath newRelativePath;
|
|
v.writeTo (newRelativePath);
|
|
setPath (newRelativePath);
|
|
}
|
|
|
|
ValueTree DrawablePath::createValueTree (ComponentBuilder::ImageProvider* imageProvider) const
|
|
{
|
|
ValueTree tree (valueTreeType);
|
|
ValueTreeWrapper v (tree);
|
|
|
|
v.setID (getComponentID());
|
|
writeTo (v, imageProvider, nullptr);
|
|
|
|
if (relativePath != nullptr)
|
|
v.readFrom (*relativePath, nullptr);
|
|
else
|
|
v.readFrom (RelativePointPath (path), nullptr);
|
|
|
|
return tree;
|
|
}
|
|
|