void OnSceneGUI(SceneView view)
{
TerrainCompiler targ = (TerrainCompiler)target;
if (!mDebugEnabled || mDebugTerrain == null)
{
// Nothing to do.
return;
}
Vector3 mousePos = Event.current.mousePosition;
Camera cam = Camera.current;
Ray ray = cam.ScreenPointToRay(new Vector3(mousePos.x, -mousePos.y + cam.pixelHeight));
Vector3 point = Vector3.zero;
RaycastHit hit;
if (Physics.Raycast(ray, out hit, 1000.0f))
{
Terrain terrain = hit.collider.gameObject.GetComponent <Terrain>();
if (terrain == mDebugTerrain)
{
point = hit.point;
}
}
if (mDebugPosition != point)
{
mDebugPosition = point;
SceneView.RepaintAll();
}
if (mDebugPosition == Vector3.zero)
{
return;
}
Color c = Color.yellow;
c.a = 0.25f;
int trash;
Vector3 scale = TerrainUtil.DeriveScale(mDebugTerrain, targ.Resolution, out trash, out trash);
float xmin = mDebugPosition.x - scale.x * mDebugZoneSize;
float zmin = mDebugPosition.z - scale.z * mDebugZoneSize;
float xmax = mDebugPosition.x + scale.x * mDebugZoneSize;
float zmax = mDebugPosition.z + scale.z * mDebugZoneSize;
TriangleMesh mesh = TerrainUtil.TriangulateSurface(mDebugTerrain
, xmin, zmin, xmax, zmax
, targ.Resolution
, mDebugOffset);
if (mesh != null)
{
DebugDraw.TriangleMesh(mesh.verts, mesh.tris, mesh.triCount, true, c);
}
}
private void OnGUIDebug(TerrainCompiler targ)
{
// Getting the terrain requires a full terrain search. So only check
// for it occationally.
if (mDebugEnabled)
{
double time = EditorApplication.timeSinceStartup;
if (targ.terrainData != mLastSource || mLastCheck + CheckDelay > time)
{
Terrain terrain = targ.GetTerrain();
mLastSource = targ.terrainData;
mLastCheck = time;
if (mDebugTerrain != terrain)
{
mDebugTerrain = terrain;
SceneView.RepaintAll();
}
}
}
else
{
mDebugTerrain = null;
mLastCheck = 0;
mLastSource = null;
}
EditorGUILayout.Separator();
GUI.enabled = targ.terrainData;
bool origChanged = GUI.changed;
mDebugEnabled = EditorGUILayout.Toggle("Enable Preview", mDebugEnabled);
if (!mDebugEnabled || !targ.terrainData)
{
return;
}
GUILayout.Label("Size");
mDebugZoneSize = (int)GUILayout.HorizontalSlider(mDebugZoneSize, 10, 50);
GUILayout.Label("Offset");
mDebugOffset = GUILayout.HorizontalSlider(mDebugOffset, 0, 10);
EditorGUILayout.Separator();
string helpText;
if (mDebugTerrain == null)
{
helpText = "There is no enabled terrain in the scene using the source terrain data.";
}
else
{
int xc;
int zc;
Vector3 scale = TerrainUtil.DeriveScale(mDebugTerrain, targ.Resolution, out xc, out zc);
int triCount = (xc - 1) * (zc - 1) * 2;
helpText = string.Format("Mouse-over the terrain in the scene to see a "
+ " triangulation preview. Trees are not included in the preview.\n\n"
+ "Total surface triangles: {0:N0}\n"
+ "Sample distance: {1:F1} x {2:F1}"
, triCount, scale.x, scale.z);
}
GUILayout.Box(helpText, EditorUtil.HelpStyle, GUILayout.ExpandWidth(true));
if (GUI.changed)
{
SceneView.RepaintAll();
}
GUI.changed = origChanged;
}