/// <summary>
/// Builds the heightfield data by using a callback to determine the height of the
/// field elements.
/// </summary>
/// <param name="callback">The function which will determine the height data.</param>
/// <param name="width">The total width of the heightfield along the local x axis.</param>
/// <param name="depth">The total depth of the heightfield along the local z axis.</param>
/// <param name="widthSamples">
/// The number of vertices to sample along the width of the heightfield.
/// </param>
/// <param name="depthSamples">
/// The number of vertices to sample along the depth of the heightfield.
/// </param>
/// <param name="scale">A uniform scale applied to all raw height data.</param>
/// <param name="offset">An offset applied to the scaled height data.</param>
/// <param name="thickness">
/// A value subtracted from the lowest height which in effect adds an
/// additional cuboid to the base of the heightfield. This is used to
/// prevent geoms from looping under the desired terrain and not registering
/// as a collision. Note that the thickness is not affected by the scale or
/// offset parameters.
/// </param>
/// <param name="wrap">
/// If <b>true</b> then the heightfield will infinitely tile in both directions
/// along the local x and z axes. Otherwise, the heightfield is bounded from
/// zero to <paramref name="width"/> in the local x axis, and zero to
/// <paramref name="depth"/> in the local z axis.
/// </param>
public void BuildCallback(
HeightfieldGetHeight callback,
dReal width, dReal depth, int widthSamples, int depthSamples,
dReal scale, dReal offset, dReal thickness, bool wrap)
{
if (callback == null)
{
throw new ArgumentNullException("callback");
}
NativeMethods.dGeomHeightfieldDataBuildCallback(
id, IntPtr.Zero, (data, x, z) => callback(x, z),
width, depth, widthSamples, depthSamples,
scale, offset, thickness, wrap ? 1 : 0);
}
public static extern void GeomHeightfieldDataBuildCallback(IntPtr d, IntPtr pUserData, HeightfieldGetHeight pCallback,
dReal width, dReal depth, int widthSamples, int depthSamples,
dReal scale, dReal offset, dReal thickness, int bWrap);
internal static extern void GeomHeightfieldDataBuildCallback(IntPtr d, IntPtr pUserData,
HeightfieldGetHeight pCallback,
Single width, Single depth, int widthSamples,
int depthSamples,
Single scale, Single offset, Single thickness, int bWrap);
