public void BasicConstructorTest()
{
Random r = new Random();
int width = r.Next(20);
int height = r.Next(20);
int scale = r.Next(20);
// Create a new random grid
DrawingGrid grid = new DrawingGrid(width, height, scale);
// Verify that the grid maintains the correct parameters
AreEqual(grid.Scale, scale);
AreEqual(grid.size.Width, width);
AreEqual(grid.size.Height, height);
AreEqual(grid.Grid.GetLength(0), width);
AreEqual(grid.Grid.GetLength(1), height);
// Verify that the interior grid is entirely the default color
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
AreEqual(grid.GetCell(x, y), Color.White);
}
}
}
public void NativeScalingTest()
{
// Generate a randomly scaled 20 x 20 bitmap
Random r = new Random();
int nativeScale = r.Next(2, 11);
Bitmap bmp = new Bitmap(20 * nativeScale, 20 * nativeScale);
string pngPath = "NativeScalingTest.png";
for (int x = 0; x < bmp.Width; x++)
{
for (int y = 0; y < bmp.Height; y++)
{
bmp.SetPixel(x, y, Color.FromArgb(r.Next()));
}
}
// Save as a .png temporarily
FileStream bmpFile = new FileStream(pngPath, FileMode.Create);
BitmapConverters.SaveBitmapAsPNG(bmp, bmpFile);
bmpFile.Close();
// Convert the saved png back into a bitmap
FileStream pngFile = new FileStream(pngPath, FileMode.Open);
// Create a grid from the png saved
DrawingGrid grid = new DrawingGrid(pngFile, 2, nativeScale);
pngFile.Close();
// Clean up png
if (File.Exists(pngPath))
{
File.Delete(pngPath);
}
// Verify that the grid maintains the same parameters
AreEqual(grid.Scale, 2);
AreEqual(grid.size.Width, 20);
AreEqual(grid.size.Height, 20);
AreEqual(grid.Grid.GetLength(0), 20);
AreEqual(grid.Grid.GetLength(1), 20);
// Verify that the interior grid has the same colors as the bitmap saved
for (int x = 0; x < 20; x++)
{
for (int y = 0; y < 20; y++)
{
AreEqual(grid.GetCell(x, y), bmp.GetPixel(x * nativeScale, y * nativeScale));
}
}
}
public void ClearRegionTest()
{
// Generate a random 20 x 20 bitmap
Bitmap bmp = new Bitmap(20, 20);
Random r = new Random();
for (int x = 0; x < bmp.Width; x++)
{
for (int y = 0; y < bmp.Height; y++)
{
bmp.SetPixel(x, y, Color.FromArgb(255, Color.FromArgb(r.Next())));
}
}
// Initialize a grid of the random bitmap
DrawingGrid grid = new DrawingGrid(bmp, 10, 1);
// Generate a random inbounds rectangle
Rectangle inBounds = new Rectangle(0, 0, r.Next(20), r.Next(20));
// Clear the region
grid.ClearRegion(inBounds);
// Verify that the region was actually cleared
for (int x = 0; x < inBounds.Width; x++)
{
for (int y = 0; y < inBounds.Height; y++)
{
AreEqual(grid.GetCell(x, y), Color.White);
}
}
// Now Generate a random out of bounds rectangle
Rectangle outBounds = new Rectangle(r.Next(5, 10), r.Next(5, 10), 20, 20);
// Clear that region
grid = new DrawingGrid(bmp, 10, 1);
grid.ClearRegion(outBounds);
// Verify that the region was cleared
for (int x = 0; x < inBounds.Width; x++)
{
for (int y = 0; y < inBounds.Height; y++)
{
if (x + outBounds.X < grid.size.Width && y + outBounds.Y < grid.size.Height)
{
AreEqual(grid.GetCell(x + outBounds.X, y + outBounds.Y), Color.White);
}
}
}
}
private void copyVerifier(DrawingGrid.GridCell[,] copy, DrawingGrid source)
{
for (int x = 0; x < copy.GetLength(0); x++)
{
for (int y = 0; y < copy.GetLength(1); y++)
{
if (x < source.size.Width && y < source.size.Height)
{
AreEqual(copy[x, y].color, source.GetCell(x, y));
}
else
{
AreEqual(copy[x, y].color, Color.White);
}
}
}
}
public void PasteRegionTest()
{
// Generate a white 20 x 20 bitmap
Bitmap bmp = new Bitmap(20, 20);
Random r = new Random();
for (int x = 0; x < bmp.Width; x++)
{
for (int y = 0; y < bmp.Height; y++)
{
bmp.SetPixel(x, y, Color.White);
}
}
// Generate a grid from the bitmap
DrawingGrid grid = new DrawingGrid(bmp, 10, 1);
// Generate a randomly colored 5 x 5 region
DrawingGrid.GridCell[,] region = new DrawingGrid.GridCell[5, 5];
for (int x = 0; x < region.GetLength(0); x++)
{
for (int y = 0; y < region.GetLength(1); y++)
{
region[x, y] = new DrawingGrid.GridCell(Color.FromArgb(255, Color.FromArgb(r.Next())));
}
}
// Paste the region in at (0,0)
grid.PasteRegion(0, 0, region);
// Verify that the region was correctly copied
for (int x = 0; x < region.GetLength(0); x++)
{
for (int y = 0; y < region.GetLength(1); y++)
{
AreEqual(region[x, y].color, grid.GetCell(x, y));
}
}
}
/*
* Gets the color at the specified point
*/
public Color GetPixel(int x, int y)
{
return(Grid.GetCell(x, y));
}
