/// <summary>
/// Draws anti-aliased line and calls <paramref name="draw"/> on every pixel
/// </summary>
/// <remarks>
/// https://en.wikipedia.org/wiki/Xiaolin_Wu%27s_line_algorithm
/// </remarks>
public static void RasterAALine(Vector2Int v0, Vector2Int v1, Action<int, int, float> draw)
{
RasterAALine(v0.x, v0.y, v1.x, v1.y, draw);
}
/// <summary>
/// Dot Product of two vectors
/// </summary>
public static int Dot(Vector2Int lhs, Vector2Int rhs)
{
return lhs.x*rhs.x + lhs.y*rhs.y;
}
/// <summary>
/// Draws filled aliased circle and calls <paramref name="draw"/> on every pixel
/// </summary>
public static void RasterFilledCircle(Vector2Int v0, int radius, Action<int, int> draw)
{
RasterFilledCircle(v0.x, v0.y, radius, draw);
}
/// <summary>
/// Draws filled circle on texture using Bresenham's algorithm
/// </summary>
public static void DrawFilledCircle(this Texture2D texture, Vector2Int center, int radius, Color color)
{
PTUtils.DrawFilledCircle(center, radius, (x, y) => texture.SetPixel(x, y, color));
}
/// <summary>
/// Draws anti-aliased line on texture
/// </summary>
public static void DrawAALine(this Texture2D texture, Vector2Int v0, Vector2Int v1, Color color)
{
PTUtils.DrawAALine(v0, v1,
(x, y, t) => texture.SetPixel(x, y, Color.Lerp(texture.GetPixel(x, y), color, t)));
}
/// <summary>
/// Draws line on texture
/// </summary>
public static void DrawLine(this Texture2D texture, Vector2Int v0, Vector2Int v1, Color color)
{
PTUtils.DrawLine(v0, v1, (x, y) => texture.SetPixel(x, y, color));
}
/// <summary>
/// Draws circle on texture
/// </summary>
public static void DrawCircle(this Texture2D texture, Vector2Int center, int radius, Color color)
{
Draw.RasterCircle(center, radius, (x, y) => texture.SetPixel(x, y, color));
}
