public void OnInspectorGUI()
{
EditorGUILayout.Space();
EditorGUILayout.LabelField("Terrain Processing", GUIStyles.GroupTitleStyle);
EditorGUILayout.PropertyField(partitionAlgorithm, new GUIContent("Algorithm", "The algorithm to use for terrain partitioning."));
EditorGUILayout.PropertyField(terrainProcessing, new GUIContent("Bounds", "Process all terrains as a single combined terrain or all terrains individually."));
BoundsProcessing selectedTerrainProcessing = (BoundsProcessing)System.Enum.GetValues(typeof(BoundsProcessing)).GetValue(terrainProcessing.enumValueIndex);
if (selectedTerrainProcessing == BoundsProcessing.Biome)
{
EditorGUI.BeginChangeCheck();
EditorGUILayout.PropertyField(boundsBiomeMaskArea, new GUIContent("Biome Mask", "The Biome used for clipping."));
// check if the changed biome mask is convex
if (EditorGUI.EndChangeCheck() || editor.performInitialConsistencyCheck)
{
if (boundsBiomeMaskArea.objectReferenceValue != null)
{
boundsBiomeMaskAreaValid.boolValue = false;
BiomeMaskArea biomeMaskArea = (BiomeMaskArea)boundsBiomeMaskArea.objectReferenceValue;
Vector2[] clipPolygon = editor.GetBiomeClipPolygon(biomeMaskArea);
if (clipPolygon != null)
{
// consistency check: clip polygon must be convex for sutherland hodgman
bool isConvex = PolygonUtils.PolygonIsConvex(clipPolygon);
if (isConvex)
{
boundsBiomeMaskAreaValid.boolValue = true;
}
else
{
Debug.LogError("Invalid clipping mask: " + biomeMaskArea.name + " (" + biomeMaskArea.MaskName + ")");
}
}
}
}
// show error in case the mask doesn't exist
if (boundsBiomeMaskArea.objectReferenceValue == null)
{
EditorGUILayout.HelpBox("The Biome Mask must be defined!", MessageType.Error);
}
// show error in case the mask isn't convex
else if (!boundsBiomeMaskAreaValid.boolValue)
{
EditorGUILayout.HelpBox("The Biome Mask must be convex!", MessageType.Error);
}
}
}
/// <summary>
/// Get the biome clip polygon for the given bounds considering the biome mask settings.
/// </summary>
/// <param name="bounds"></param>
/// <returns></returns>
public Vector2[] GetBiomeClipPolygon(Bounds bounds)
{
Vector2[] clipPolygon = PolygonUtils.CreatePolygonXZ(bounds);
// optionally use a biome as clip polygon. default is bounds
if (extension.boundsSettings.boundsProcessing == ProcessingSettings.BoundsProcessing.Biome)
{
Vector2[] biomeClipPolygon = GetBiomeClipPolygon();
if (biomeClipPolygon != null)
{
clipPolygon = GetBiomeClipPolygon();
// consistency check: clip polygon must be convex for sutherland hodgman
bool isConvex = PolygonUtils.PolygonIsConvex(clipPolygon);
if (!isConvex)
{
Debug.LogError("Biome mask clip polygon isn't convex");
}
}
}
return(clipPolygon);
}
