Improve node to svg conversion.

plugins/quantum_computing/src/visuals/BlochSphereNode.cpp

@@ -1,6 +1,7 @@
 #include "BlochSphereNode.h"
 
 #include "CircleNode.h"
+#include "LineNode.h"
 
 BlochSphereNode::BlochSphereNode(const Point& location)
 	: AbstractVisualNode(location, "BlochSphereNode")
@@ -32,9 +33,17 @@ void BlochSphereNode::update(SceneInfo* sceneInfo)
 
 	mChildren.clear();
 
-	auto loc = DiscretePoint(mSize / 2.0, mSize / 2.0);
+	auto loc = Point(mSize / 2.0, mSize / 2.0);
+	mInnerCircle = std::make_unique<CircleNode>(loc, mSize / 2.0);
+	mInnerCircle->setMinorRadius(mSize / 4.0);
+
 	mOuterCircle = std::make_unique<CircleNode>(loc, mSize/2.0);
 
-	addChild(mOuterCircle.get());
+	mCentreCircle = std::make_unique<CircleNode>(loc, mSize / 50.0);
+	mCentreCircle->setFillColor(Color(0, 0, 0));
+	mCentreCircle->setHasStrokeColor(false);
 
+	addChild(mInnerCircle.get());
+	addChild(mOuterCircle.get());
+	addChild(mCentreCircle.get());
 }

plugins/quantum_computing/test/TestBlochSphereNode.cpp

@@ -1,36 +1,23 @@
 #include "TestFramework.h"
 #include "TestUtils.h"
+#include "TestRenderUtils.h"
 
 #include "BlochSphereNode.h"
 #include "BlochSphere.h"
-#include "Scene.h"
-
-#include "SvgConverter.h"
-#include "SvgWriter.h"
-#include "SvgDocument.h"
-
-#include "File.h"
 
 TEST_CASE(TestBlochSphereNode, "quantum_computing")
 {
+	TestRenderer renderer(100, 100);
+
 	auto node = std::make_unique<BlochSphereNode>(Point(0.5, 0.5));
 
 	Qubit state({ 1.0, 0.0 }, { 0.0, 0.0 });
 
 	auto bloch_sphere = std::make_unique<BlochSphere>(state);
 	
+	node->setSize(100);
 	node->setContent(bloch_sphere.get());
 
-	auto scene = std::make_unique<Scene>();
-	scene->addNode(node.get());
-	scene->update();
-
-	SvgConverter converter;
-	auto svg_document = converter.convert(scene.get());
-
-	SvgWriter writer;
-	auto svg_content = writer.toString(svg_document.get());
-
-	File svg_file(TestUtils::getTestOutputDir(__FILE__) / "bloch_sphere.svg");
-	svg_file.writeText(svg_content);
+	renderer.getScene()->addNode(node.get());
+	renderer.writeSvg(TestUtils::getTestOutputDir(__FILE__) / "bloch_sphere.svg");
 }

src/geometry/AbstractGeometricItem.h

@@ -17,6 +17,7 @@ public:
         TRIANGLE,
         POINT,
         PATH,
+        CIRCLE,
         UNKNOWN
     };
 

src/geometry/Circle.cpp

@@ -0,0 +1,43 @@
+#include "Circle.h"
+
+Circle::Circle(const Point& centre, double radius)
+	: mCentre(centre),
+	mRadius(radius)
+{
+	mMinorRadius = mRadius;
+}
+
+const Point& Circle::getLocation() const
+{
+	return mCentre;
+}
+
+double Circle::getRadius() const
+{
+	return mRadius;
+}
+
+double Circle::getMinorRadius() const
+{
+	return mMinorRadius;
+}
+
+void Circle::setMinorRadius(double radius)
+{
+	mMinorRadius = radius;
+}
+
+void Circle::sample(Grid<unsigned char>* grid) const
+{
+
+}
+
+Circle::Bounds Circle::getSize() const
+{
+	return Bounds{ 2.0 * mRadius, 2.0 * mMinorRadius };
+}
+
+Circle::Type Circle::getType() const
+{
+	return Type::CIRCLE;
+}

src/geometry/Circle.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "AbstractGeometricItem.h"
+#include "Point.h"
+
+class Circle : public AbstractGeometricItem
+{
+public:
+	Circle(const Point& centre, double radius = 0.5);
+
+	const Point& getLocation() const override;
+
+	double getRadius() const;
+
+	double getMinorRadius() const;
+
+	void setMinorRadius(double radius);
+
+	void sample(Grid<unsigned char>* grid) const override;
+
+	Bounds getSize() const override;
+
+	Type getType() const override;
+
+private:
+	double mMinorRadius{ 0.5 };
+	double mRadius{ 0.5 };
+	Point mCentre;
+};

src/publishing/plotting/SvgConverter.cpp

@@ -5,16 +5,22 @@
 
 #include "SceneItem.h"
 #include "SceneModel.h"
+#include "SceneText.h"
 
+#include "AbstractGeometricItem.h"
 #include "AbstractMesh.h"
 #include "TriMesh.h"
 #include "AbstractFace.h"
 
-#include "SvgShapeElements.h"
+#include "Circle.h"
 
-std::unique_ptr<SvgDocument> SvgConverter::convert(Scene* scene)
+#include "SvgShapeElements.h"
+#include "XmlAttribute.h"
+
+std::unique_ptr<SvgDocument> SvgConverter::convert(Scene* scene, double width, double height) const
 {
     auto doc = std::make_unique<SvgDocument>();
+    doc->setViewBox(0.0, 0.0, width, height);
 
     scene->update();
 
@@ -22,44 +28,125 @@ std::unique_ptr<SvgDocument> SvgConverter::convert(Scene* scene)
     {
         if (item->getType() == SceneItem::Type::MODEL)
         {
-            auto mesh = dynamic_cast<SceneModel*>(item)->getMesh();
-            auto transform = item->getTransform();
+            auto model = dynamic_cast<SceneModel*>(item);
+            if (model->getGeometry())
+            {
+                convertPrimitive(doc.get(), model);
+            }
+            else
+            {
+                convertMesh(doc.get(), model, scene->shouldShowMeshOutline());
+            }
+        }
+        else
+        {
+            auto text = dynamic_cast<SceneText*>(item);
+            convertText(doc.get(), text);
+        }
+    }
+
+    return std::move(doc);
+}
+
+void SvgConverter::convertMesh(SvgDocument* document, SceneModel* model, bool showOutline) const
+{
+    auto mesh = model->getMesh();
+    auto transform = model->getTransform();
 
     if (mesh->getType() == AbstractMesh::MeshType::TRI)
     {
-                for(const auto& face : dynamic_cast<TriMesh*>(mesh)->getFaces())
+        for (const auto& face : dynamic_cast<TriMesh*>(mesh)->getFaces())
         {
             auto svg_tri = std::make_unique<SvgPolygon>();
 
-                    std::vector<DiscretePoint> points(3);
+            std::vector<Point> points(3);
             unsigned count = 0;
 
             auto face_locs = face->getNodeLocations();
-                    for(auto& loc : face_locs)
+            for (const auto& loc : face_locs)
             {
                 const auto x = loc.getX() * transform.getScaleX() + transform.getLocation().getX();
                 const auto y = loc.getY() * transform.getScaleY() + transform.getLocation().getY();
-                        points[count] = {static_cast<unsigned>(x), static_cast<unsigned>(y)};
+                points[count] = { x, y };
                 count++;
             }
             svg_tri->setPoints(points);
-                    svg_tri->setFill(item->getFillColor());
-                    doc->getRoot()->addChild(std::move(svg_tri));
+            svg_tri->setFill(model->getFillColor());
+            document->getRoot()->addChild(std::move(svg_tri));
 
-                    if (scene->shouldShowMeshOutline())
+            if (showOutline)
             {
                 auto mesh_outline = std::make_unique<SvgPolyline>();
                 points.push_back(points[0]);
                 mesh_outline->setPoints(points);
-                        mesh_outline->setStrokeColor({0, 0, 0});
+                mesh_outline->setStrokeColor({ 0, 0, 0 });
                 mesh_outline->setStrokeWidth(0.1);
-                        doc->getRoot()->addChild(std::move(mesh_outline));
+                document->getRoot()->addChild(std::move(mesh_outline));
             }
         }
     }
-        }
-    }
-
-
-    return std::move(doc);
+}
+
+void SvgConverter::setStyle(SceneModel* model, SvgShapeElement* element) const
+{
+    auto transform = model->getTransform();
+
+    if (model->hasFillColor())
+    {
+        element->setFill(model->getFillColor());
+    }
+    else
+    {
+        element->setNoFill();
+    }
+    if (model->hasOutlineColor())
+    {
+        element->setStrokeColor(model->getOutlineColor());
+        element->setStrokeWidth(1.0 / transform.getScaleX());
+    }
+    else
+    {
+        element->setNoStroke();
+    }
+    element->addAttribute(std::move(toTransform(transform)));
+}
+
+void SvgConverter::convertPrimitive(SvgDocument* document, SceneModel* model) const
+{
+    if (model->getGeometry()->getType() == AbstractGeometricItem::Type::RECTANGLE)
+    {
+        auto rect = std::make_unique<SvgRectangle>();
+        rect->setWidth(1.0);
+        rect->setHeight(1.0);
+
+        setStyle(model, rect.get());
+        document->getRoot()->addChild(std::move(rect));
+    }
+    else if (model->getGeometry()->getType() == AbstractGeometricItem::Type::CIRCLE)
+    {
+        auto model_circle = dynamic_cast<Circle*>(model->getGeometry());
+
+        auto circle = std::make_unique<SvgCircle>();
+        circle->setRadius(model_circle->getRadius());
+
+        setStyle(model, circle.get());
+        document->getRoot()->addChild(std::move(circle));
+    }
+}
+
+void SvgConverter::convertText(SvgDocument* document, SceneText* model) const
+{
+
+}
+
+std::unique_ptr<XmlAttribute> SvgConverter::toTransform(const Transform& transform) const
+{
+    auto svg_transform = std::make_unique<XmlAttribute>("transform");
+
+    std::string ops;
+    ops += "translate(" + std::to_string(transform.getLocation().getX()) + " " + std::to_string(transform.getLocation().getY()) + ") ";
+    ops += "scale(" + std::to_string(transform.getScaleX()) + " " + std::to_string(transform.getScaleY()) + ") ";
+    svg_transform->setValue(ops);
+
+    return std::move(svg_transform);
 }

src/publishing/plotting/SvgConverter.h

@@ -3,10 +3,28 @@
 #include <memory>
 
 class SvgDocument;
+class SvgShapeElement;
+class XmlAttribute;
+
 class Scene;
+class SceneModel;
+class SceneText;
+
+class Transform;
 
 class SvgConverter
 {
 public:
-    std::unique_ptr<SvgDocument> convert(Scene* scene);
+    std::unique_ptr<SvgDocument> convert(Scene* scene, double width = 800.0, double height = 800.0) const;
+
+private:
+    void convertMesh(SvgDocument* document, SceneModel* model, bool showOutline = false) const;
+
+    void convertPrimitive(SvgDocument* document, SceneModel* model) const;
+
+    void convertText(SvgDocument* document, SceneText* model) const;
+
+    void setStyle(SceneModel* model, SvgShapeElement* element) const;
+
+    std::unique_ptr<XmlAttribute> toTransform(const Transform& transform) const;
 };

src/visual_elements/basic_shapes/CircleNode.cpp

@@ -5,8 +5,7 @@
 #include "AbstractMesh.h"
 #include "MeshPrimitives.h"
 #include "SceneInfo.h"
-
-#include <iostream>
+#include "Circle.h"
 
 CircleNode::CircleNode(const Point& location, double radius)
 :    GeometryNode(location),
@@ -51,22 +50,53 @@ void CircleNode::setRadius(double radius)
     }
 }
 
+void CircleNode::setMinorRadius(double radius)
+{
+    if (mMinorRadius != radius)
+    {
+        mMinorRadius = radius;
+        mTransformIsDirty = true;
+    }
+}
+
+void CircleNode::createOrUpdateGeometry(SceneInfo* sceneInfo)
+{
+    if (sceneInfo->mSupportsGeometryPrimitives)
+    {
+        auto circle = std::make_unique<Circle>(Point{ 0, 0 }, 0.5);
+        circle->setMinorRadius(mMinorRadius);
+        mBackgroundItem = std::make_unique<SceneModel>(std::move(circle));
+    }
+    else
+    {
+        auto mesh = MeshPrimitives::buildCircleAsTriMesh();
+        mBackgroundItem = std::make_unique<SceneModel>(std::move(mesh));
+    }
+    mBackgroundItem->setName(mName + "_Model");
+}
+
+void CircleNode::updateMaterial()
+{
+    if (!mBackgroundItem)
+    {
+        return;
+    }
+
+    if (mHasFillColor)
+    {
+        mBackgroundItem->setFillColor(mFillColor);
+    }
+    if (mHasStrokeColor)
+    {
+        mBackgroundItem->setOutlineColor(mStrokeColor);
+    }
+}
+
 void CircleNode::update(SceneInfo* sceneInfo)
 {
     if (!mBackgroundItem || mGeometryIsDirty)
     {
-        auto mesh = MeshPrimitives::buildCircleAsTriMesh();
-
-        if (!mBackgroundItem)
-        {
-            mBackgroundItem = std::make_unique<SceneModel>(std::move(mesh));
-            mBackgroundItem->setName(mName + "_Model");
-            mBackgroundItem->setFillColor(mFillColor);
-        }
-        else
-        {
-            mBackgroundItem->updateMesh(std::move(mesh));
-        }
+        createOrUpdateGeometry(sceneInfo);
         mGeometryIsDirty = false;
     }
 
@@ -78,7 +108,7 @@ void CircleNode::update(SceneInfo* sceneInfo)
 
     if (mMaterialIsDirty)
     {
-        mBackgroundItem->setFillColor(mFillColor);
+        updateMaterial();
         mMaterialIsDirty = false;
     }
 }

src/visual_elements/basic_shapes/CircleNode.h

@@ -7,18 +7,22 @@ class CircleNode : public GeometryNode
 public:
     CircleNode(const Point& location, double radius);
 
-    Type getType();
+    Type getType() override;
 
     double getRadius() const;
 
     SceneItem* getSceneItem(std::size_t idx) const override;
     std::size_t getNumSceneItems() const override;
 
+    void setMinorRadius(double radius);
     void setRadius(double radius);
 
     void update(SceneInfo* sceneInfo) override;
 private:
-    double mRadius{1};
+    void createOrUpdateGeometry(SceneInfo* sceneInfo);
+    void updateMaterial();
+    double mRadius{1.0};
+    double mMinorRadius{ 1.0 };
 
     std::unique_ptr<SceneModel> mBackgroundItem;
     std::unique_ptr<SceneModel> mOutlineItem;

src/visual_elements/basic_shapes/LineNode.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "GeometryNode.h"
+
+class LineNode : public GeometryNode
+{
+public:
+    LineNode(const Point& location)
+        : GeometryNode(location)
+    {
+
+    }
+
+    Type getType()
+    {
+        return Type::Line;
+    }
+};

src/visual_elements/basic_shapes/RectangleNode.cpp

@@ -86,6 +86,23 @@ void RectangleNode::createOrUpdateGeometry(SceneInfo* sceneInfo)
     mBackgroundItem->setName(mName + "_Model");
 }
 
+void RectangleNode::updateMaterial()
+{
+    if (!mBackgroundItem)
+    {
+        return;
+    }
+
+    if (mHasFillColor)
+    {
+        mBackgroundItem->setFillColor(mFillColor);
+    }
+    if (mHasStrokeColor)
+    {
+        mBackgroundItem->setOutlineColor(mStrokeColor);
+    }
+}
+
 void RectangleNode::update(SceneInfo* sceneInfo)
 {
     if (!mBackgroundItem || mGeometryIsDirty)
@@ -96,20 +113,13 @@ void RectangleNode::update(SceneInfo* sceneInfo)
 
     if (mTransformIsDirty)
     {
-        mBackgroundItem->updateTransform({mLocation, static_cast<double>(mWidth), static_cast<double>(mHeight)});
+        mBackgroundItem->updateTransform({mLocation, mWidth, mHeight});
         mTransformIsDirty = false;
     }
 
     if (mMaterialIsDirty)
     {
-        if (mHasFillColor)
-        {
-            mBackgroundItem->setFillColor(mFillColor);
-        }
-        if (mHasStrokeColor)
-        {
-            mBackgroundItem->setOutlineColor(mStrokeColor);
-        }
+        updateMaterial();
         mMaterialIsDirty = false;
     }
 }

src/visual_elements/basic_shapes/RectangleNode.h

@@ -24,6 +24,7 @@ public:
 
 private:
     void createOrUpdateGeometry(SceneInfo* sceneInfo);
+    void updateMaterial();
     double mWidth{1};
     double mHeight{1};
 

src/visual_elements/nodes/GeometryNode.h

@@ -27,23 +27,7 @@ public:
 protected:
     unsigned mStrokeThickness{0};
     Type mType;
-
     bool mGeometryIsDirty{true};
 };
 
-class LineNode : public GeometryNode
-{
-public:
-    LineNode(const Point& location)
-    :    GeometryNode(location)
-    {
-
-    }
-
-    Type getType()
-    {
-        return Type::Line;
-    }
-};
-
 using GeometryNodePtr = std::unique_ptr<GeometryNode>;

src/visual_elements/nodes/MaterialNode.cpp

@@ -20,8 +20,19 @@ const Color& MaterialNode::getStrokeColor() const
     return mStrokeColor;
 }
 
+void MaterialNode::setHasStrokeColor(bool hasStroke)
+{
+    if (mHasStrokeColor != hasStroke)
+    {
+        mHasStrokeColor = hasStroke;
+        mMaterialIsDirty = true;
+    }
+}
+
 void MaterialNode::setFillColor(const Color& color)
 {
+    mHasFillColor = true;
+
     if (mFillColor != color)
     {
         mMaterialIsDirty = true;
@@ -31,6 +42,8 @@ void MaterialNode::setFillColor(const Color& color)
 
 void MaterialNode::setStrokeColor(const Color&  color)
 {
+    mHasStrokeColor = true;
+
     if (mStrokeColor != color)
     {
         mMaterialIsDirty = true;

src/visual_elements/nodes/MaterialNode.h

@@ -12,6 +12,8 @@ public:
     const Color& getFillColor() const;
     const Color& getStrokeColor() const;
 
+    void setHasStrokeColor(bool hasStroke);
+
     void setFillColor(const Color& color);
     void setStrokeColor(const Color& color);
 

src/visual_elements/scene/Scene.cpp

@@ -47,6 +47,8 @@ void Scene::setBackgroundColor(const Color& color)
 
 void Scene::updateNode(AbstractVisualNode* node)
 {
+    node->update(mSceneInfo.get());
+
     for (auto child : node->getChildren())
     {
         if (child->getIsVisible())
@@ -55,8 +57,6 @@ void Scene::updateNode(AbstractVisualNode* node)
         }
     }
 
-    node->update(mSceneInfo.get());
-
     for (std::size_t idx=0; idx< node->getNumSceneItems(); idx++)
     {
         if (auto item = node->getSceneItem(idx))

src/web/CMakeLists.txt

@@ -27,6 +27,11 @@ list(APPEND web_LIB_INCLUDES
     html/elements/HtmlHeadElement.cpp
     html/elements/HtmlBodyElement.cpp
     html/elements/HtmlParagraphElement.cpp
+    svg/SvgDocument.h
+    svg/SvgWriter.h
+    svg/SvgShapeElement.h
+    svg/SvgElement.h
+    svg/elements/SvgShapeElements.h
     svg/SvgDocument.cpp
     svg/SvgWriter.cpp
     svg/SvgShapeElement.cpp

src/web/svg/SvgShapeElement.cpp

@@ -10,6 +10,20 @@ SvgShapeElement::SvgShapeElement(const std::string& tagName)
 
 }
 
+void SvgShapeElement::setNoFill()
+{
+    auto attr = std::make_unique<XmlAttribute>("fill");
+    attr->setValue("none");
+    addAttribute(std::move(attr));
+}
+
+void SvgShapeElement::setNoStroke()
+{
+    auto attr = std::make_unique<XmlAttribute>("stroke");
+    attr->setValue("none");
+    addAttribute(std::move(attr));
+}
+
 void SvgShapeElement::setFill(const Color& fill)
 {
     auto attr = std::make_unique<XmlAttribute>("fill");

src/web/svg/SvgShapeElement.h

@@ -10,8 +10,11 @@ public:
 
     void setFill(const Color& fill);
 
+    void setNoFill();
+
     void setStrokeWidth(double width);
 
     void setStrokeColor(const Color& stroke);
 
+    void setNoStroke();
 };

src/web/svg/elements/SvgShapeElements.cpp

@@ -8,19 +8,19 @@ SvgCircle::SvgCircle()
 
 }
 
-void SvgCircle::setLocation(const DiscretePoint& loc)
+void SvgCircle::setLocation(const Point& loc)
 {
     auto cx = std::make_unique<XmlAttribute>("cx");
     auto cy = std::make_unique<XmlAttribute>("cy");
 
-    cx->setValue(std::to_string(loc.GetX()));
-    cy->setValue(std::to_string(loc.GetY()));
+    cx->setValue(std::to_string(loc.getX()));
+    cy->setValue(std::to_string(loc.getY()));
 
     addAttribute(std::move(cx));
     addAttribute(std::move(cy));
 }
 
-void SvgCircle::setRadius(unsigned rad)
+void SvgCircle::setRadius(double rad)
 {
     auto r = std::make_unique<XmlAttribute>("r");
     r->setValue(std::to_string(rad));
@@ -33,19 +33,19 @@ SvgRectangle::SvgRectangle()
 
 }
 
-void SvgRectangle::setLocation(const DiscretePoint& loc)
+void SvgRectangle::setLocation(const Point& loc)
 {
     auto x = std::make_unique<XmlAttribute>("x");
     auto y = std::make_unique<XmlAttribute>("y");
 
-    x->setValue(std::to_string(loc.GetX()));
-    y->setValue(std::to_string(loc.GetY()));
+    x->setValue(std::to_string(loc.getX()));
+    y->setValue(std::to_string(loc.getY()));
 
     addAttribute(std::move(x));
     addAttribute(std::move(y));
 }
 
-void SvgRectangle::setWidth(unsigned w)
+void SvgRectangle::setWidth(double w)
 {
     auto width = std::make_unique<XmlAttribute>("width");
 
@@ -54,7 +54,7 @@ void SvgRectangle::setWidth(unsigned w)
     addAttribute(std::move(width));
 }
 
-void SvgRectangle::setHeight(unsigned h)
+void SvgRectangle::setHeight(double h)
 {
     auto height = std::make_unique<XmlAttribute>("height");
 
@@ -70,14 +70,14 @@ SvgPolygon::SvgPolygon()
 
 }
 
-void SvgPolygon::setPoints(const std::vector<DiscretePoint>& locs)
+void SvgPolygon::setPoints(const std::vector<Point>& locs)
 {
     auto points = std::make_unique<XmlAttribute>("points");
 
     std::stringstream sstr;
     for (const auto& loc : locs)
     {
-        sstr << loc.GetX() << "," << loc.GetY() << " ";
+        sstr << loc.getX() << "," << loc.getY() << " ";
     }
     points->setValue(sstr.str());
     addAttribute(std::move(points));
@@ -91,14 +91,14 @@ SvgPolyline::SvgPolyline()
     addAttribute(std::move(fill));
 }
 
-void SvgPolyline::setPoints(const std::vector<DiscretePoint>& locs)
+void SvgPolyline::setPoints(const std::vector<Point>& locs)
 {
     auto points = std::make_unique<XmlAttribute>("points");
 
     std::stringstream sstr;
     for (const auto& loc : locs)
     {
-        sstr << loc.GetX() << "," << loc.GetY() << " ";
+        sstr << loc.getX() << "," << loc.getY() << " ";
     }
     points->setValue(sstr.str());
     addAttribute(std::move(points));

src/web/svg/elements/SvgShapeElements.h

@@ -1,7 +1,7 @@
 #pragma once
 
 #include "SvgShapeElement.h"
-#include "DiscretePoint.h"
+#include "Point.h"
 
 #include "XmlAttribute.h"
 
@@ -10,9 +10,9 @@ class SvgCircle : public SvgShapeElement
 public:
     SvgCircle();
 
-    void setLocation(const DiscretePoint& loc);
+    void setLocation(const Point& loc);
 
-    void setRadius(unsigned rad);
+    void setRadius(double rad);
 };
 
 class SvgRectangle : public SvgShapeElement
@@ -20,11 +20,11 @@ class SvgRectangle : public SvgShapeElement
 public:
     SvgRectangle();
 
-    void setLocation(const DiscretePoint& loc);
+    void setLocation(const Point& loc);
 
-    void setWidth(unsigned width);
+    void setWidth(double width);
 
-    void setHeight(unsigned height);
+    void setHeight(double height);
 };
 
 class SvgPolygon : public SvgShapeElement
@@ -32,7 +32,7 @@ class SvgPolygon : public SvgShapeElement
 public:
     SvgPolygon();
 
-    void setPoints(const std::vector<DiscretePoint>& loc);
+    void setPoints(const std::vector<Point>& loc);
 };
 
 class SvgPolyline : public SvgShapeElement
@@ -40,7 +40,7 @@ class SvgPolyline : public SvgShapeElement
 public:
     SvgPolyline();
 
-    void setPoints(const std::vector<DiscretePoint>& loc);
+    void setPoints(const std::vector<Point>& loc);
 };
 
 class SvgPath : public SvgShapeElement

test/test_utils/TestRenderUtils.h

@@ -3,9 +3,16 @@
 #include "DrawingSurface.h"
 #include "DrawingContext.h"
 #include "AbstractPainter.h"
+#include "Scene.h"
+
+#include "SvgConverter.h"
+#include "SvgWriter.h"
+#include "SvgDocument.h"
+
 #include "Image.h"
 #include "PngWriter.h"
-#include "Scene.h"
+
+#include "File.h"
 
 class TestRenderer
 {
@@ -34,6 +41,18 @@ public:
 		writer.write(image);
 	}
 
+	void writeSvg(const Path& path)
+	{
+		SvgConverter converter;
+		auto svg_document = converter.convert(mSurface->getScene());
+
+		SvgWriter writer;
+		auto svg_content = writer.toString(svg_document.get());
+
+		File svg_file(path);
+		svg_file.writeText(svg_content);
+	}
+
 private:
 	std::unique_ptr<DrawingSurface> mSurface;
 	std::unique_ptr<DrawingContext> mDrawingContext;