Initial plotting support.

src/rendering/visual_elements/nodes/LineEndNode.cpp

@@ -0,0 +1,63 @@
+#include "LineEndNode.h"
+
+#include "GeometryNode.h"
+#include "PolygonNode.h"
+
+LineEndNode::LineEndNode(const Transform& t)
+	: MaterialNode(t)
+{
+
+}
+
+void LineEndNode::setStyle(LineEndNode::Style style)
+{
+	if (mStyle != style)
+	{
+		mStyle = style;
+		mContentDirty = true;
+	}
+}
+
+void LineEndNode::setSize(double size)
+{
+	if (mSize != size)
+	{
+		mSize = size;
+		mContentDirty = true;
+	}
+}
+
+void LineEndNode::createOrUpdateGeometry(SceneInfo* sceneInfo)
+{
+	if (!mContentNode)
+	{
+		if (mStyle == Style::CLOSED_ARROW)
+		{
+			auto polygon = std::make_unique<PolygonNode>();
+			auto p0 = Point(0.0, -mSize / 2.0);
+			auto p1 = Point(mSize, 0.0);
+			auto p2 = Point(0.0, mSize / 2.0);
+			polygon->setPoints({ p0, p1, p2 });
+			polygon->setFillColor({ 0, 0, 0 });
+
+			mContentNode = std::move(polygon);
+			addChild(mContentNode.get());
+		}
+	}
+
+}
+
+void LineEndNode::update(SceneInfo* sceneInfo)
+{
+	if (mContentDirty)
+	{
+		createOrUpdateGeometry(sceneInfo);
+		mContentDirty = false;
+	}
+
+	if (mMaterialIsDirty)
+	{
+		//updateMaterial();
+		mMaterialIsDirty = false;
+	}
+}