}
-// This is drawn in Qt coordinates...
+// The rect passed in is in Qt coordinates...
void Painter::DrawRoundedRect(QRectF rect, double radiusX, double radiusY)
{
if (!painter)
}
-// This is drawn partially in Cartesian coordinates, and partially in Qt
-// coordinates. The rect itself is in Cartesian but we want to pad it by a set
-// number of pixels.
+// The rect passed in is in Cartesian but we want to pad it by a set number of
+// pixels (currently set at 8), so the pad looks the same regardless of zoom.
void Painter::DrawPaddedRect(QRectF rect)
{
if (!painter)
void Painter::DrawArrowhead(Vector head, Vector tail, double size)
{
+ if (!painter)
+ return;
+
QPolygonF arrow;
// We draw the arrowhead aligned along the line from tail to head
painter->drawPolygon(arrow);
}
+
+// Point is given in Cartesian coordinates
+void Painter::DrawCrosshair(Vector point)
+{
+ if (!painter)
+ return;
+
+ Vector screenPoint = CartesianToQtCoords(point);
+ painter->drawLine(0, screenPoint.y, screenSize.x, screenPoint.y);
+ painter->drawLine(screenPoint.x, 0, screenPoint.x, screenSize.y);
+}
+