private void loadHeightMap_Click(object sender, EventArgs e)
{
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.Filter = "All Graphics Types|*.bmp;*.png;*.jpg";
openFileDialog1.FilterIndex = 0;
openFileDialog1.RestoreDirectory = true;
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
Bitmap i = (Bitmap)Bitmap.FromFile(openFileDialog1.FileName);
this.HeightMapBitmap = new LockBitmap(i);
this.HeightMapBitmapPreview = new LockBitmap(new Bitmap(i));
{
HeightMapBitmapPreview.LockBits();
if ((HeightMapBitmapPreview.Width * HeightMapBitmapPreview.Height) > 4096 * 2048)
{
MessageBox.Show(this, "Error: Height map too large. Max size 4096x2048");
HeightMapBitmapPreview.UnlockBits();
return;
}
for (int x = 0; x < HeightMapBitmapPreview.Width; x++)
{
for (int y = 0; y < HeightMapBitmapPreview.Height; y++)
{
byte h = HeightMapBitmapPreview.GetHeight(x, y);
if (h < seaLevel.Value)
{
HeightMapBitmapPreview.SetPixel(x, y, Color.FromArgb(255, 69, 91, 186));
}
}
}
HeightMapBitmapPreview.UnlockBits();
preview.Image = HeightMapBitmapPreview.Source;
preview.Invalidate();
//using (Graphics gg = Graphics.FromImage(landDrawBitmap.Source))
{
// gg.Clear(Color.Transparent);
// gg.SmoothingMode = SmoothingMode.Default;
// gg.DrawImage(i, new Rectangle(0, 0, preview.Width, preview.Height));
}
}
}
}
private void seaLevel_ValueChanged(object sender, EventArgs e)
{
this.HeightMapBitmapPreview = new LockBitmap(new Bitmap(HeightMapBitmap.Source));
{
HeightMapBitmapPreview.LockBits();
for (int x = 0; x < HeightMapBitmapPreview.Width; x++)
{
for (int y = 0; y < HeightMapBitmapPreview.Height; y++)
{
byte h = HeightMapBitmapPreview.GetHeight(x, y);
if (h < seaLevel.Value)
{
HeightMapBitmapPreview.SetPixel(x, y, Color.FromArgb(255, 69, 91, 186));
}
}
}
HeightMapBitmapPreview.UnlockBits();
preview.Image = HeightMapBitmapPreview.Source;
preview.Invalidate();
}
}
