public override void Render(DrawingHandleWorld handle)
{
if (onGrid)
{
const int ppm = EyeManager.PixelsPerMeter;
var viewportSize = (Vector2)pManager._clyde.ScreenSize;
var position = pManager.eyeManager.ScreenToMap(Vector2.Zero);
var gridstartx = (float)MathF.Round(position.X / snapSize, MidpointRounding.AwayFromZero) * snapSize;
var gridstarty = (float)MathF.Round(position.Y / snapSize, MidpointRounding.AwayFromZero) * snapSize;
var gridstart = pManager.eyeManager.WorldToScreen(
new Vector2( //Find snap grid closest to screen origin and convert back to screen coords
gridstartx,
gridstarty));
for (var a = gridstart.X;
a < viewportSize.X;
a += snapSize * ppm) //Iterate through screen creating gridlines
{
var from = ScreenToWorld(new Vector2(a, 0));
var to = ScreenToWorld(new Vector2(a, viewportSize.Y));
handle.DrawLine(from, to, new Color(0, 0, 1f));
}
for (var a = gridstart.Y; a < viewportSize.Y; a += snapSize * ppm)
{
var from = ScreenToWorld(new Vector2(0, a));
var to = ScreenToWorld(new Vector2(viewportSize.X, a));
handle.DrawLine(from, to, new Color(0, 0, 1f));
}
}
// Draw grid BELOW the ghost.
base.Render(handle);
}
public override void AlignPlacementMode(ScreenCoordinates mouseScreen)
{
MouseCoords = ScreenToCursorGrid(mouseScreen);
snapSize = pManager.MapManager.GetGrid(MouseCoords.GridID).SnapSize; //Find snap size.
GridDistancing = snapSize;
onGrid = true;
var mouselocal = new Vector2( //Round local coordinates onto the snap grid
(float)MathF.Round(MouseCoords.X / snapSize, MidpointRounding.AwayFromZero) * snapSize,
(float)MathF.Round(MouseCoords.Y / snapSize, MidpointRounding.AwayFromZero) * snapSize);
//Convert back to original world and screen coordinates after applying offset
MouseCoords =
new GridCoordinates(
mouselocal + new Vector2(pManager.PlacementOffset.X, pManager.PlacementOffset.Y), MouseCoords.GridID);
}
