| public static IsNearBeziers ( Vector2 p, BezierPoint points, float rad ) : bool | ||
| p | Vector2 | |
| points | BezierPoint | |
| rad | float | |
| return | bool | |
public static void DrawBezier(BezierPoint[] points, float rad, Color col, Texture2D tex)
{
rad = Mathf.Round(rad);//It is important to round the numbers otherwise it will mess up with the texture width
if (points.Length <= 1)
{
return;
}
Vector2 topleft = new Vector2(Mathf.Infinity, Mathf.Infinity);
Vector2 bottomright = new Vector2(0, 0);
for (int i = 0; i < points.Length - 1; i++)
{
Vector2 main = points[i].main;
Vector2 control2 = points[i].control2;
Vector2 control1 = points[i + 1].control1;
Vector2 main2 = points[i + 1].main;
BezierCurve curve = new BezierCurve(main, control2, control1, main2);
points[i].curve2 = curve;
points[i + 1].curve1 = curve;
topleft.x = Mathf.Min(topleft.x, curve.rect.x);
topleft.y = Mathf.Min(topleft.y, curve.rect.y);
bottomright.x = Mathf.Max(bottomright.x, curve.rect.x + curve.rect.width);
bottomright.y = Mathf.Max(bottomright.y, curve.rect.y + curve.rect.height);
}
topleft -= new Vector2(rad, rad);
bottomright += new Vector2(rad, rad);
var start = new Vector2(Mathf.Clamp(topleft.x, 0, tex.width), Mathf.Clamp(topleft.y, 0, tex.height));
var width = new Vector2(Mathf.Clamp(bottomright.x - topleft.x, 0, tex.width - start.x), Mathf.Clamp(bottomright.y - topleft.y, 0, tex.height - start.y));
Color[] pixels = tex.GetPixels((int)start.x, (int)start.y, (int)width.x, (int)width.y, 0);
for (var y = 0; y < width.y; y++)
{
for (var x = 0; x < width.x; x++)
{
var p = new Vector2(x + start.x, y + start.y);
if (!Mathfx.IsNearBeziers(p, points, rad + 2))
{
continue;
}
var samples = Sample(p);
var c = Color.black;
var pc = pixels[y * (int)width.x + x];//Previous pixel color
for (var i = 0; i < samples.Length; i++)
{
if (Mathfx.IsNearBeziers(samples[i], points, rad))
{
c += col;
}
else
{
c += pc;
}
}
c /= samples.Length;
pixels[y * (int)width.x + x] = c;
}
}
tex.SetPixels((int)start.x, (int)start.y, (int)width.x, (int)width.y, pixels, 0);
tex.Apply();
}