void OnGUI()
{
//use the terrain selected in the popup menu, gotta love unityGUI syntax
Terrain selectedTerrain = m_terrains[EditorGUILayout.Popup(0, m_terrainNames)];
if (m_heightField != null)
{
EditorGUILayout.ColorField("Hight Field Generated", Color.green);
}
else
{
EditorGUILayout.ColorField("Height Field Generated", Color.red);
}
if (GUILayout.Button("Generate Height Field"))
{
m_heightField = generateField(selectedTerrain);
}
showField = EditorGUILayout.Toggle("Display Height Field", showField);
if (showField && m_heightField != null)
{
EditorGUI.DrawPreviewTexture(new Rect(0,300,200,200), m_heightField.getBitmap(5));
}
GUILayout.BeginVertical();
if (m_heightField != null)
{
EditorGUILayout.LabelField("Height Points: ", m_heightField.Length.ToString());
}
GUILayout.EndVertical();
}
public HeightField getHeightField(int resolution, Bounds area)
{
int tempLayer = setupLayer();
LayerMask mask = 1 << tempLayer;
int sizeX = (int)(area.size.x);
int sizeZ = (int)(area.size.z); //also known as size y but unity is y-up
HeightField retval = new HeightField(resolution, sizeX, sizeZ);
for (float x = 0; x < retval.GetLength(0); x+= (1/(float)resolution))
{
for (float y = 0; y < retval.GetLength(1); y+=(1/(float)resolution))
{
float maxHeight = area.size.y;
RaycastHit info;
Ray ray = new Ray(new Vector3((float)x,maxHeight,(float)y), Vector3.down);
Physics.Raycast(ray, out info, mask);
float height = maxHeight - info.distance;
retval.getHeightAtPosition(x,y).height = height;
}
}
return retval;
}
public HeightFieldRenderer(HeightField field, Terrain terrain)
{
m_field = field;
m_terrain = terrain;
}
