upperLeft.X = 0;

upperLeft.Y = 0;

upperLeft.Z = 0;

upperRight.X = 300;

upperRight.Y = 0;

upperRight.Z = 0;

lowerLeft.X = 0;

lowerLeft.Y = 0;

lowerLeft.Z = -100;

lowerRight.X = 300;

lowerRight.Y = 1;

lowerRight.Z = -100;

multiPatchCreator.SetWKSPointZ(0, ref upperRight);

multiPatchCreator.SetWKSPointZ(1, ref lowerRight);

multiPatchCreator.SetWKSPointZ(2, ref upperLeft);

multiPatchCreator.SetWKSPointZ(3, ref lowerLeft);

//设置贴图的点

WKSPoint textureUpperLeft = new WKSPoint();

WKSPoint textureLowerLeft = new WKSPoint();

WKSPoint textureUpperRight = new WKSPoint();

WKSPoint textureLowerRight = new WKSPoint();

textureUpperLeft.X = 0; textureUpperLeft.Y = 0;

textureUpperRight.X = 1; textureUpperRight.Y = 0;

textureLowerLeft.X = 0; textureLowerLeft.Y = 1;

textureLowerRight.X = 1; textureLowerRight.Y = 1;

multiPatchCreator.SetTextureWKSPoint(0, ref textureUpperRight);

multiPatchCreator.SetTextureWKSPoint(1, ref textureLowerRight);

multiPatchCreator.SetTextureWKSPoint(2, ref textureUpperLeft);

multiPatchCreator.SetTextureWKSPoint(3, ref textureLowerLeft);

//创建MultiPatch对象

IMultiPatch multiPatch = multiPatchCreator.CreateMultiPatch() as IMultiPatch;

return multiPatch;

}