Improve circuit plotting.

plugins/circuits/src/visuals/WireNode.cpp

@@ -0,0 +1,69 @@
+#include "WireNode.h"
+
+#include "LineNode.h"
+
+WireNode::WireNode(const Transform& transform)
+	: AbstractVisualNode(transform)
+{
+
+}
+
+void WireNode::setContent(Wire* wire)
+{
+	mContent = wire;
+	mContentDirty = true;
+}
+
+void WireNode::setInputLocation(const Point& point)
+{
+    if (mInputLocation != point)
+    {
+        mContentDirty = true;
+        mInputLocation = point;
+    }
+}
+
+void WireNode::setOutputLocation(const Point& point)
+{
+    if (mOutputLocation != point)
+    {
+        mContentDirty = true;
+        mOutputLocation = point;
+    }
+}
+
+void WireNode::update(SceneInfo* sceneInfo)
+{
+    if (mContentDirty)
+    {
+        createOrUpdateGeometry(sceneInfo);
+        mContentDirty = false;
+    }
+}
+
+void WireNode::createOrUpdateGeometry(SceneInfo*)
+{
+    if (!mLine)
+    {
+        auto loc = mOutputLocation;
+        loc.move(-mInputLocation.getX(), -mInputLocation.getY(), -mInputLocation.getZ());
+
+        std::vector<Point> points;
+
+        if (loc.getY() == 0.0)
+        {
+            points = { loc };
+        }
+        else
+        {
+            auto join0 = Point(loc.getX() * 3.0 / 4.0, 0.0);
+            auto join1 = Point(loc.getX() * 3.0 / 4.0, loc.getY());
+            points = { join0,  join1 , loc};
+        }
+
+
+        mLine = std::make_unique<LineNode>(Transform(mInputLocation), points);
+
+        addChild(mLine.get());
+    }
+}