/* ============================== Draw ============================== */
public void Draw(Vector2 start, Vector2 end, ECBrush brush)
{
if (brush.size <= 1)
{
Line(start, end, brush.color);
return;
}
brush.size += 1;
if (end == start)
{
end.y++;
}
Rect rect = new Rect(Mathf.Min(start.x, end.x) - brush.size, Mathf.Min(start.y, end.y) - brush.size, Mathf.Abs(start.x - end.x) + brush.size * 2, Mathf.Abs(start.y - end.y) + brush.size * 2);
rect = DestRect(rect, texture);
int rx = (int)rect.x;
int ry = (int)rect.y;
int rw = (int)rect.width;
int rh = (int)rect.height;
if (rx < 0 || ry < 0 || rw < 0 || rh < 0)
{
return;
}
//Color[] colors = preview.GetPixels(rx, ry, rw, rh);
//Color[] colors = new Color[rw * rh];
//for (int i = 0; i < colors.Length; i++) colors[i] = Color.clear;
for (int y = ry; y < ry + rh; y++)
{
for (int x = rx; x < rx + rw; x++)
{
Vector2 p = new Vector2(x, y);
float d = StraightLine.Distance(p, start, end);
if (d > brush.size)
{
continue;
}
else if (d <= brush.size)
{
int i = (x - rx) + (y - ry) * rw;
float a = (brush.size - d) / (brush.size * (1 - brush.hardness));
a = d / (float)brush.size <= brush.hardness ? brush.color.a : a * brush.color.a;
if (preview.GetPixel(x, y).a < a) //colors[i].a < a)
{
Color c = brush.color;
if (brush.tool == ECBrush.Tool.Eraser)
{
c = origin[x + y * width];
}
if (d >= brush.size - 1)
{
c.a = 0;
}
else
{
c.a = a;
}
Map(x, y, c);
//colors[i] = c;
//Map(x, y, colors[i]);
}
}
}
}
//Map(rx, ry, rw, rh, colors);
}
