void SetCanvasOrigin(Point clientPosition)
{
if (Canvas == null)
{
return;
}
// get the minimap client area, in pixels, without borders and padding
var clientArea = new Rect(0, 0, Width, Height);
clientArea.Inflate(-TotalPadding, -TotalPadding);
// clamp the mouse within the client area
clientPosition = clientArea.Clamp(new Vector(clientPosition)).ToPoint();
// get the mouse position as a percentage of the client area size
var x = (clientPosition.X - TotalPadding) / clientArea.Width;
var y = (clientPosition.Y - TotalPadding) / clientArea.Height;
// get the visible area on the canvas, in canvas coordinates
var viewport = Canvas.Viewport;
var canvasBounds = Canvas.ComputeCanvasBounds(false);
// limit it to the rectangle in which the center of the viewport may be placed whilst rendering only the occupied portions of the canvas visible
var restrictedBounds = canvasBounds;
if (restrictedBounds.Width > viewport.Width)
{
restrictedBounds.Inflate(-viewport.Width / 2, 0);
}
else
{
restrictedBounds.X += restrictedBounds.Width / 2;
restrictedBounds.Width = 0;
}
if (restrictedBounds.Height > viewport.Height)
{
restrictedBounds.Inflate(0, -viewport.Height / 2);
}
else
{
restrictedBounds.Y += restrictedBounds.Height / 2;
restrictedBounds.Height = 0;
}
// center the canvas on the mouse position in canvas coordinates, limited to the above rectangle
Canvas.Origin = restrictedBounds.Clamp(new Vector(canvasBounds.Left + canvasBounds.Width * x, canvasBounds.Top + canvasBounds.Height * y));
}
void SetCanvasOrigin(Point clientPosition)
{
if (Canvas == null)
{
return;
}
// get the minimap client area, in pixels, without borders and padding
var clientArea = new Rect(0, 0, Width, Height);
clientArea.Inflate(-TotalPadding, -TotalPadding);
// clamp the mouse within the client area
clientPosition = clientArea.Clamp(new Vector(clientPosition)).ToPoint();
// get the mouse position as a percentage of the client area size
var x = (clientPosition.X - TotalPadding) / clientArea.Width;
var y = (clientPosition.Y - TotalPadding) / clientArea.Height;
// get the visible area on the canvas, in canvas coordinates
var viewport = Canvas.Viewport;
var canvasBounds = Canvas.ComputeCanvasBounds(false);
// limit it to the rectangle in which the center of the viewport may be placed whilst rendering only the occupied portions of the canvas visible
var restrictedBounds = canvasBounds;
if (restrictedBounds.Width > viewport.Width)
{
restrictedBounds.Inflate(-viewport.Width / 2, 0);
}
else
{
restrictedBounds.X += restrictedBounds.Width / 2;
restrictedBounds.Width = 0;
}
if (restrictedBounds.Height > viewport.Height)
{
restrictedBounds.Inflate(0, -viewport.Height / 2);
}
else
{
restrictedBounds.Y += restrictedBounds.Height / 2;
restrictedBounds.Height = 0;
}
// center the canvas on the mouse position in canvas coordinates, limited to the above rectangle
Canvas.Origin = restrictedBounds.Clamp(new Vector(canvasBounds.Left + canvasBounds.Width * x, canvasBounds.Top + canvasBounds.Height * y));
}
