public override void updatePreview()
{
RailPattern rp = RailPattern.get(currentDirection, currentDirection.opposite);
using (PreviewDrawer drawer = new PreviewDrawer(preview.Size, new Size(1, 1), 0)) {
// draw the rail
for (int i = -5; i < 5; i++)
{
if (currentDirection.isParallelToX)
{
drawer.draw(rp, i, 0);
}
else
{
drawer.draw(rp, 0, i);
}
}
// draw the signal
drawer.draw(rp, 0, 0);
drawer.draw(currentType.getSprite(currentDirection), 0, 0);
// draw the arrow
currentDirection.drawArrow(drawer.surface,
drawer.getPoint(-currentDirection.offsetX, -currentDirection.offsetY));
preview.Image = drawer.createBitmap();
}
}
/// <summary>
/// Builds a nice preview of a train.
/// </summary>
public PreviewDrawer createPreview(Size pixelSize)
{
PreviewDrawer pd = new PreviewDrawer(pixelSize, new Size(1, 3), 0);
// build up rail like
//
// /~~~~~
// /
for (int x = -10; x < 0; x++)
{
pd.draw(RailPattern.get(Direction.WEST, Direction.EAST), x, 0);
}
pd.draw(RailPattern.get(Direction.WEST, Direction.SOUTHEAST), 0, 0);
for (int x = 1; x <= 10; x++)
{
pd.draw(RailPattern.get(Direction.NORTHWEST, Direction.SOUTHEAST), x, x);
}
TrainCarContribution[] cars = create(5);
if (cars == null)
{
for (int i = 6; cars == null && i < 15; i++)
{
cars = create(i);
}
for (int i = 4; cars == null && i > 0; i--)
{
cars = create(i);
}
if (cars == null)
{
return(pd); // no preview
}
}
int[] pos = new int[] { -2, 0, -1, 0, 0, 0, 1, 1, 2, 2 };
int[] angle = new int[] { 12, 12, 13, 14, 14 };
int[] offset = new int[] { 0, 0, 0, 0, 4, +2, 0, 0, 0, 0 };
using (DrawContext dc = new DrawContext(pd.surface)) {
for (int i = 4; i >= 0; i--)
{
if (cars.Length <= i)
{
continue; // no car
}
Point pt = pd.getPoint(pos[i * 2], pos[i * 2 + 1]);
cars[i].draw(pd.surface,
new Point(pt.X + offset[i * 2], pt.Y + offset[i * 2 + 1] - 9), angle[i]);
}
}
return(pd);
}
/// <summary>
/// Creates the preview image of the land builder.
/// </summary>
public override PreviewDrawer createPreview(Size pixelSize)
{
const int r = 8;
PreviewDrawer drawer = new PreviewDrawer(pixelSize, new Size(r, r), 0);
for (int y = 0; y < r; y++)
{
for (int x = 0; x < r; x++)
{
Point pt = drawer.getPoint(x, y, 0);
byte[] tree = createRandomTrees();
for (int i = 0; i < tree.Length; i += 3)
{
sprites[tree[i + 2]].draw(drawer.surface,
new Point(pt.X + tree[i + 0], pt.Y + tree[i + 1]));
}
}
}
return(drawer);
}
