本文整理汇总了C#中DotSpatial.Data.Extent.SetCenter方法的典型用法代码示例。如果您正苦于以下问题：C# Extent.SetCenter方法的具体用法？C# Extent.SetCenter怎么用？C# Extent.SetCenter使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DotSpatial.Data.Extent的用法示例。
在下文中一共展示了Extent.SetCenter方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: ResetAspectRatio
/// <summary>
/// If a BackBuffer.Extents exists, this will enlarge those extents to match the aspect ratio
/// of the pixel view. If one doesn't exist, the _mapFrame.Extents will be used instead.
/// </summary>
/// <param name="newEnv">The envelope to adjust</param>
protected void ResetAspectRatio(Extent newEnv)
{
// ---------- Aspect Ratio Handling
if (newEnv == null) return;
double h = View.Height;
double w = View.Width;
// It isn't exactly an exception, but rather just an indication not to do anything here.
if (h == 0 || w == 0) return;
double controlAspect = w / h;
double envelopeAspect = newEnv.Width / newEnv.Height;
Coordinate center = newEnv.ToEnvelope().Center();
if (controlAspect > envelopeAspect)
{
// The Control is proportionally wider than the envelope to display.
// If the envelope is proportionately wider than the control, "reveal" more width without
// changing height If the envelope is proportionately taller than the control,
// "hide" width without changing height
newEnv.SetCenter(center, newEnv.Height * controlAspect, newEnv.Height);
}
else
{
// The control is proportionally taller than the content is
// If the envelope is proportionately wider than the control,
// "hide" the extra height without changing width
// If the envelope is proportionately taller than the control, "reveal" more height without changing width
newEnv.SetCenter(center, newEnv.Width, newEnv.Width / controlAspect);
}
}