private void PageVisibilityHandler(object sender, PageVisibilityEventArgs msg)
{
TerrainPage terrainPage = sender as TerrainPage;
if (msg.visible)
{
// the page has become visible, so generate and assign the hilight mask texture
Debug.Assert(terrainPage.HilightMask == null);
SetRoadMask(terrainPage);
}
else
{
// the page is moving out of the visible area, so free up the mask textures
if (terrainPage.HilightMask != null)
{
Texture hilightMask = terrainPage.HilightMask;
terrainPage.HilightType = TerrainPage.PageHilightType.None;
terrainPage.HilightMask = null;
TextureManager.Instance.Unload(hilightMask);
}
}
}
private void SetRoadMask(TerrainPage terrainPage)
{
// generate a texture from the mask
PageCoord pc = new PageCoord(terrainPage.Location, TerrainManager.Instance.PageSize);
byte[] byteMask = mask.GetMask(pc);
if (byteMask != null)
{
Image maskImage = Image.FromDynamicImage(byteMask, mask.PageSize, mask.PageSize, PixelFormat.A8);
String texName = String.Format("RoadMask-{0}", pc.ToString());
Texture texImage = TextureManager.Instance.LoadImage(texName, maskImage);
terrainPage.HilightMask = texImage;
terrainPage.HilightType = TerrainPage.PageHilightType.EdgeSharpBlend;
}
}
private void UpdateRoadMaskTextures()
{
int numPages = TerrainManager.Instance.PageArraySize;
for (int x = 0; x < numPages; x++)
{
for (int z = 0; z < numPages; z++)
{
TerrainPage terrainPage = TerrainManager.Instance.LookupPage(x, z).TerrainPage;
if ((terrainPage.HilightMask != null) && (terrainPage.HilightType == TerrainPage.PageHilightType.EdgeSharpBlend))
{
terrainPage.HilightType = TerrainPage.PageHilightType.None;
terrainPage.HilightMask.Dispose();
terrainPage.HilightMask = null;
}
SetRoadMask(terrainPage);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="size">size of the terrain patch in meters</param>
/// <param name="metersPerSample">meters per sample</param>
/// <param name="pageHeightMap">which page heightmap to use to build the patch</param>
/// <param name="startX">starting X offset of the patch within the page (in meters)</param>
/// <param name="startZ">starting Z offset of the patch within the page (in meters)</param>
public TerrainPatch(TerrainPage terrainPage, int size, int metersPerSample, int startX, int startZ)
{
this.terrainPage = terrainPage;
patchSize = size;
// save patch params
this.pageHeightMap = terrainPage.PageHeightMap;
this.metersPerSample = metersPerSample;
this.startX = startX;
this.startZ = startZ;
patchLoc = new Vector3(
terrainPage.Location.x + startX * TerrainManager.oneMeter,
0,
terrainPage.Location.z + startZ * TerrainManager.oneMeter);
numSamples = patchSize / metersPerSample;
pageHeightMap.SetPatchLOD(startX, startZ, patchSize, metersPerSample);
ComputeStitchSize();
}
/// <summary>
///
/// </summary>
/// <param name="size">size of the terrain patch in meters</param>
/// <param name="metersPerSample">meters per sample</param>
/// <param name="pageHeightMap">which page heightmap to use to build the patch</param>
/// <param name="startX">starting X offset of the patch within the page (in meters)</param>
/// <param name="startZ">starting Z offset of the patch within the page (in meters)</param>
public TerrainPatch(TerrainPage terrainPage, int size, int metersPerSample, int startX, int startZ)
{
this.terrainPage = terrainPage;
patchSize = size;
// save patch params
this.pageHeightMap = terrainPage.PageHeightMap;
this.metersPerSample = metersPerSample;
this.startX = startX;
this.startZ = startZ;
patchLoc = new Vector3(
terrainPage.Location.x + startX * TerrainManager.oneMeter,
0,
terrainPage.Location.z + startZ * TerrainManager.oneMeter);
numSamples = patchSize / metersPerSample;
pageHeightMap.SetPatchLOD(startX, startZ, patchSize, metersPerSample);
ComputeStitchSize();
}
private void SetRoadMask(TerrainPage terrainPage)
{
// generate a texture from the mask
PageCoord pc = new PageCoord(terrainPage.Location, TerrainManager.Instance.PageSize);
byte[] byteMask = mask.GetMask(pc);
if (byteMask != null)
{
Image maskImage = Image.FromDynamicImage(byteMask, mask.PageSize, mask.PageSize, PixelFormat.A8);
String texName = String.Format("RoadMask-{0}", pc.ToString());
Texture texImage = TextureManager.Instance.LoadImage(texName, maskImage);
terrainPage.HilightMask = texImage;
terrainPage.HilightType = TerrainPage.PageHilightType.EdgeSharpBlend;
}
}
/// <summary>
/// Raise the page visibility event
/// </summary>
/// <param name="vis">true if the page is entering visible area, false if the page is leaving visible area</param>
/// <param name="terrainPage">the page</param>
private void OnPageVisibility(bool vis, TerrainPage terrainPage)
{
PageVisibilityEventHandler pageVis = PageVisibility;
if (pageVis != null)
{
pageVis(terrainPage, new PageVisibilityEventArgs(vis, terrainPage.Location));
}
}
private static String HighlightMaterialName(TerrainPage.PageHilightType type)
{
switch (type)
{
case TerrainPage.PageHilightType.None:
default:
return "MVSMTerrain";
case TerrainPage.PageHilightType.Colorized:
return "MVSMTerrainColorizedHilight";
case TerrainPage.PageHilightType.EdgeBlend:
return "MVSMTerrainEdgeBlendHilight";
case TerrainPage.PageHilightType.EdgeSharpBlend:
return "MVSMTerrainEdgeSharpBlendHilight";
case TerrainPage.PageHilightType.EdgeSharp:
return "MVSMTerrainEdgeSharpHilight";
}
}
