//镂空模式_初始化颜色
private void InitializeColor_HollowOut(ExGrid Grid)
{
m_LookupTable = vtkLookupTable.New();
m_LookupTable.SetTableRange(Grid.Min, Grid.Max);
//蓝色->红色
m_LookupTable.SetHueRange(0.666667, 0);
m_LookupTable.SetNumberOfColors(100);
m_LookupTable.Build();
//设定标量值的颜色
m_ColorTransferFunction = vtkColorTransferFunction.New();
for (int i = 0; i < 100; i += 10)
{
var color = m_LookupTable.GetTableValue(i);
double Range = Grid.Max - Grid.Min;
m_ColorTransferFunction.AddRGBPoint(Grid.Min + i * Range / 100.0, color[0], color[1], color[2]);
}
m_ColorTransferFunction.Build();
//线性插值透明度
m_PiecewiseFunction = vtkPiecewiseFunction.New();
// [,)
InitRanges();
foreach (var range in m_IntersectRanges)
{
double Min = range.Min;
double Max = range.Max;
////由于VTK的特性，对Max进行修正
//如果透明
if (range.Transparent)
{
m_PiecewiseFunction.AddSegment(Min, Transparency_Yes, Max, Transparency_Yes);
}
//不透明
else
{
Min = Min + EPSILON;
Max = Max - EPSILON;
m_PiecewiseFunction.AddSegment(Min, Transparency_Not, Max, Transparency_Not);
}
}
}