/// <summary>
/// Gets a world space position of a point on terrain's tile coordinates
/// </summary>
/// <returns>The height map coords.</returns>
/// <param name="pointOnTerrain">Point on terrain.</param>
protected Vector3 GetHeightMapCoords(Vector3 pointOnTerrain)
{
Vector3 pos = pointOnTerrain - world.terrain.transform.position;
pos.x = world.worldData.tileWidth * Mathf.Round(pos.x / world.worldData.tileWidth);
pos.z = world.worldData.tileWidth * Mathf.Round(pos.z / world.worldData.tileWidth);
pos.y = world.GetHeight(pos.x, pos.z);
return(pos);
}
void DrawTile(int x, int y)
{
float tileWidth = world.worldData.tileWidth;
Vector3 center = world.GetWorldPositionFromTile(x, y, true);
Vector3 c1 = center + new Vector3(-0.4f * tileWidth, 0, -0.4f * tileWidth);
c1.y = Mathf.Max(world.GetHeight(c1), world.GetWaterLevelHeight());
Vector3 c2 = center + new Vector3(-0.4f * tileWidth, 0, 0.4f * tileWidth);
c2.y = Mathf.Max(world.GetHeight(c2), world.GetWaterLevelHeight());
Vector3 c3 = center + new Vector3(0.4f * tileWidth, 0, 0.4f * tileWidth);
c3.y = Mathf.Max(world.GetHeight(c3), world.GetWaterLevelHeight());
Vector3 c4 = center + new Vector3(0.4f * tileWidth, 0, -0.4f * tileWidth);
c4.y = Mathf.Max(world.GetHeight(c4), world.GetWaterLevelHeight());
GL.Vertex(c1);
GL.Vertex(c2);
GL.Vertex(c3);
GL.Vertex(c4);
}
void OnPostRender()
{
// set the current material
lineMaterial.SetPass(0);
GL.Begin(GL.LINES);
if (isVisible)
{
GL.Color(mainColor);
#region draw gl lines
Vector3 wsOffset = world.terrain.transform.position;
Vector3 lsStart = start;
Vector3 lsStop = stop;
int startX = Mathf.RoundToInt(lsStart.x < lsStop.x ? lsStart.x :lsStop.x);
int stopX = Mathf.RoundToInt(lsStart.x > lsStop.x ? lsStart.x :lsStop.x);
int startZ = Mathf.RoundToInt(lsStart.z < lsStop.z ? lsStart.z :lsStop.z);
int stopZ = Mathf.RoundToInt(lsStart.z > lsStop.z ? lsStart.z :lsStop.z);
switch (overlayType)
{
case OverlayType.SQUARE:
for (int x = startX; x < stopX; x++)
{
GL.Vertex3(x + wsOffset.x, world.GetHeight(x, startZ) + offsetY + wsOffset.y, startZ + wsOffset.z);
GL.Vertex3(x + 1 + wsOffset.x, world.GetHeight(x + 1, startZ) + offsetY + wsOffset.y, startZ + wsOffset.z);
GL.Vertex3(x + wsOffset.x, world.GetHeight(x, stopZ) + offsetY + wsOffset.y, stopZ + wsOffset.z);
GL.Vertex3(x + 1 + wsOffset.x, world.GetHeight(x + 1, stopZ) + offsetY + wsOffset.y, stopZ + wsOffset.z);
}
for (int z = startZ; z < stopZ; z++)
{
GL.Vertex3(startX + wsOffset.x, world.GetHeight(startX, z) + offsetY + wsOffset.y, z + wsOffset.z);
GL.Vertex3(startX + wsOffset.x, world.GetHeight(startX, z + 1) + offsetY + wsOffset.y, z + 1 + wsOffset.z);
GL.Vertex3(stopX + wsOffset.x, world.GetHeight(stopX, z) + offsetY + wsOffset.y, z + wsOffset.z);
GL.Vertex3(stopX + wsOffset.x, world.GetHeight(stopX, z + 1) + offsetY + wsOffset.y, z + 1 + wsOffset.z);
}
break;
case OverlayType.CROSS:
for (int x = startX; x < stopX; x++)
{
GL.Vertex3(x + wsOffset.x, world.GetHeight(x, (start.z + stop.z) / 2) + offsetY + wsOffset.y, (start.z + stop.z) / 2 + wsOffset.z);
GL.Vertex3(x + 1 + wsOffset.x, world.GetHeight(x + 1, (start.z + stop.z) / 2) + offsetY + wsOffset.y, (start.z + stop.z) / 2 + wsOffset.z);
}
for (int z = startZ; z < stopZ; z++)
{
GL.Vertex3((start.x + stop.x) / 2 + wsOffset.x, world.GetHeight((start.x + stop.x) / 2, z) + offsetY + wsOffset.y, z + wsOffset.z);
GL.Vertex3((start.x + stop.x) / 2 + wsOffset.x, world.GetHeight((start.x + stop.x) / 2, z + 1) + offsetY + wsOffset.y, z + 1 + wsOffset.z);
}
break;
default:
break;
}
#endregion
}
GL.End();
}
