|
public static PointFromPointF ( |
||
| pointf | ||
| return | Point | |
// Hit test against highlighted handles, return the location of the best one, or (Nan, Nan) if none.
public PointF HitTestHandles(PointF locationTest, bool testBeziers)
{
return(new PointF(float.NaN, float.NaN));
#if false
float bestDistance = float.MaxValue;
PointF bestPoint = new PointF(float.NaN, float.NaN);
if (currentHighlights == null)
{
return(bestPoint);
}
RectangleF hitBounds;
// Compute the hit bounds rectangle. A point must be within this rectangle
// to be considered. This is equivalent to making sure the actual handle square is clicked on
Point locationPixel = Util.PointFromPointF(WorldToPixel(locationTest));
Rectangle rectPixel = new Rectangle(locationPixel.X - HandleRadius, locationPixel.Y - HandleRadius, HandleDiameter, HandleDiameter);
hitBounds = PixelToWorld(rectPixel);
// Determine the closest point of those handles that were clicked on.
for (int i = 0; i < currentHighlights.handles.Length; ++i)
{
PointF pt = currentHighlight.handles[i];
// Don't check bezier handles unless requested to.
if (!testBeziers && currentHighlight.handleKinds[i] == PointKind.BezierControl)
{
continue;
}
if (hitBounds.Contains(pt))
{
float distance = Util.DistanceF(pt, locationTest);
if (distance < bestDistance)
{
bestDistance = distance;
bestPoint = pt;
}
}
}
return(bestPoint);
#endif
}
void DrawHighlights(Graphics g, Rectangle visRect, IMapViewerHighlight[] highlights)
{
if (highlights == null)
{
return;
}
// Set the rendering origin so the hatch brushes draw correctly and don't scroll weirdly.
PointF origin = WorldToPixel(new PointF(0, 0));
g.RenderingOrigin = Util.PointFromPointF(origin);
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
foreach (IMapViewerHighlight h in highlights)
{
h.DrawHighlight(g, xformWorldToPixel);
}
}
