/// <summary>
/// Generates a list of triangles for use with the water effect
/// </summary>
/// <param name="Colors">A list of colors to use that will be randomly selected from the array.</param>
/// <param name="Depth">Depth of the terrain</param>
/// <param name="Width">Width of the terrain</param>
/// <returns></returns>
public static IEnumerable <VertexPositionColor_Vector4> getTrisAlternatingForEff(Color[] Colors, int Depth, int Width, float PointSpacing)
{
Vector4[,] colours = new Vector4[Depth + 1, Width + 1];
for (int i = 0; i != Depth + 1; i++)
{
for (int j = 0; j != Width + 1; j++)
{
colours[i, j] = Colors[RNG.Next(Colors.Length)].ToVector4();
}
}
for (int i = 0; i < Depth; i++) //I is Y axis
{
for (int j = 0; j < Width; j++) //J is X axis
{
if ((i + j) % 2 == 0)
{
var a = new VertexPositionColor_Vector4(new Vector3(i * PointSpacing, 0, j * PointSpacing), colours[i, j]);
var b = new VertexPositionColor_Vector4(new Vector3((i + 1) * PointSpacing, 0, j * PointSpacing), colours[i + 1, j]);
var c = new VertexPositionColor_Vector4(new Vector3((i + 1) * PointSpacing, 0, (j + 1) * PointSpacing), colours[i + 1, j + 1]);
yield return(a);
yield return(b);
yield return(c);
b = new VertexPositionColor_Vector4(new Vector3((i + 1) * PointSpacing, 0, (j + 1) * PointSpacing), colours[i + 1, j + 1]);
c = new VertexPositionColor_Vector4(new Vector3(i * PointSpacing, 0, (j + 1) * PointSpacing), colours[i, j + 1]);
yield return(a);
yield return(b);
yield return(c);
}
else
{
var a = new VertexPositionColor_Vector4(new Vector3(i * PointSpacing, 0, j * PointSpacing), colours[i, j]);
var b = new VertexPositionColor_Vector4(new Vector3((i + 1) * PointSpacing, 0, j * PointSpacing), colours[i + 1, j]);
var c = new VertexPositionColor_Vector4(new Vector3(i * PointSpacing, 0, (j + 1) * PointSpacing), colours[i, j + 1]);
yield return(a);
yield return(b);
yield return(c);
a = new VertexPositionColor_Vector4(new Vector3((i + 1) * PointSpacing, 0, j * PointSpacing), colours[i + 1, j]);
b = new VertexPositionColor_Vector4(new Vector3((i + 1) * PointSpacing, 0, (j + 1) * PointSpacing), colours[i + 1, j + 1]);
yield return(a);
yield return(b);
yield return(c);
}
}
}
}
/// <summary>
/// Generates a list of triangles for use with the water effect
/// </summary>
/// <param name="Colors">A list of colors to use that will be randomly selected from the array.</param>
/// <param name="Depth">Depth of the terrain</param>
/// <param name="Width">Width of the terrain</param>
/// <returns></returns>
public static IEnumerable <VertexPositionColor_Vector4> getTrisAlternatingForEffInCircle(Color[] Colors, int Depth, int Width, float PointSpacing, float Radius, Color ClearColor)
{
Vector4[,] colours = new Vector4[Depth + 1, Width + 1];
for (int i = 0; i != Depth + 1; i++)
{
for (int j = 0; j != Width + 1; j++)
{
if (Vector2.Distance(new Vector2(Depth / 2 * PointSpacing, Width / 2 * PointSpacing), new Vector2(i * PointSpacing, j * PointSpacing)) <= Radius - 100)
{
colours[i, j] = Colors[RNG.Next(Colors.Length)].ToVector4();
}
else
{
colours[i, j] = ClearColor.ToVector4();
colours[i, j].W = 0 / 255f;
}
}
}
for (int i = 0; i < Depth; i++) //I is Y axis
{
for (int j = 0; j < Width; j++) //J is X axis
{
if (Vector2.Distance(new Vector2(Depth / 2 * PointSpacing, Width / 2 * PointSpacing), new Vector2(i * PointSpacing, j * PointSpacing)) <= Radius)
{
if ((i + j) % 2 == 0)
{
var a = new VertexPositionColor_Vector4(new Vector3(i * PointSpacing, 0, j * PointSpacing), colours[i, j]);
var b = new VertexPositionColor_Vector4(new Vector3((i + 1) * PointSpacing, 0, j * PointSpacing), colours[i + 1, j]);
var c = new VertexPositionColor_Vector4(new Vector3((i + 1) * PointSpacing, 0, (j + 1) * PointSpacing), colours[i + 1, j + 1]);
yield return(a);
yield return(b);
yield return(c);
b = new VertexPositionColor_Vector4(new Vector3((i + 1) * PointSpacing, 0, (j + 1) * PointSpacing), colours[i + 1, j + 1]);
c = new VertexPositionColor_Vector4(new Vector3(i * PointSpacing, 0, (j + 1) * PointSpacing), colours[i, j + 1]);
yield return(a);
yield return(b);
yield return(c);
}
else
{
var a = new VertexPositionColor_Vector4(new Vector3(i * PointSpacing, 0, j * PointSpacing), colours[i, j]);
var b = new VertexPositionColor_Vector4(new Vector3((i + 1) * PointSpacing, 0, j * PointSpacing), colours[i + 1, j]);
var c = new VertexPositionColor_Vector4(new Vector3(i * PointSpacing, 0, (j + 1) * PointSpacing), colours[i, j + 1]);
yield return(a);
yield return(b);
yield return(c);
a = new VertexPositionColor_Vector4(new Vector3((i + 1) * PointSpacing, 0, j * PointSpacing), colours[i + 1, j]);
b = new VertexPositionColor_Vector4(new Vector3((i + 1) * PointSpacing, 0, (j + 1) * PointSpacing), colours[i + 1, j + 1]);
yield return(a);
yield return(b);
yield return(c);
}
}
}
}
}
