public void DrawArc(VertexHelper vh, Vector2 position, Vector2 radius, float from, float to, int steps, Color color)
{
vh.Clear();
var list = new List <UIVertex>();
var step = (to - from) / steps;
list.Add(Vertex(position, new Vector2(0.5f, 0.5f), color));
for (var i = 0; i < steps + 1; i++)
{
var a = from + i * step;
var cos = Mathf.Cos(a);
var sin = Mathf.Sin(a);
var dirX = cos > 0 ? 1 : -1;
var dirY = sin > 0 ? 1 : -1;
var rx = Mathf.Pow(Mathf.Abs(cos), K) * dirX;
var ry = Mathf.Pow(Mathf.Abs(sin), K) * dirY;
var x = rx * radius.x + position.x;
var y = ry * radius.y + position.y;
var uv = new Vector2(0.5f + x / rectTransform.rect.width, 0.5f + y / rectTransform.rect.height);
list.Add(Vertex(new Vector2(x, y), uv, color));
}
vh.AddUIVertexStream(list, ShapeTopology.TringleFan(steps).ToList());
}
public static void DrawLine(this VertexHelper vh, List <Vector2> positions, float width, Color color)
{
vh.Clear();
var list = new List <UIVertex>();
for (var i = 0; i < positions.Count; i++)
{
var point = positions[i];
var pointPrev = positions[i > 0 ? i - 1 : i];
var pointNext = positions[i < positions.Count - 1 ? i + 1 : i];
var uvy = i % 2 == 0 ? 1 : 0;
var uv = new Vector2(uvy, 0);
list.Add(Vertex(point, uv, color));
var diff = (pointNext - pointPrev).normalized;
var normal = new Vector2(-diff.y, diff.x) * width;
var uv2 = new Vector2(uvy, 1);
list.Add(Vertex(point + normal, uv2, color));
}
vh.AddUIVertexStream(list, ShapeTopology.TringleStrip((positions.Count - 1) * 2).ToList());
}
public static void DrawArc(this VertexHelper vh, Vector2 position, Vector2 radius, float from, float to, int steps, Color color)
{
vh.Clear();
var list = new List <UIVertex>();
var step = (to - from) / steps;
list.Add(Vertex(position, new Vector2(0.5f, 0.5f), color));
for (var i = 0; i < steps + 1; i++)
{
var a = from + i * step;
var cos = Mathf.Cos(a);
var sin = Mathf.Sin(a);
var x = cos * radius.x + position.x;
var y = sin * radius.y + position.y;
var uv = new Vector2(cos, sin) * 0.5f + Vector2.one * 0.5f;
list.Add(Vertex(new Vector2(x, y), uv, color));
}
vh.AddUIVertexStream(list, ShapeTopology.TringleFan(steps).ToList());
}
public static void DrawCone(this VertexHelper vh, Vector2 position, Vector2 radius, float width, float from, float to, int steps, Color color)
{
vh.Clear();
var list = new List <UIVertex>();
var step = (to - from) / steps;
var radiusB = new Vector2(radius.x - width, radius.y - width);
for (var i = 0; i < steps + 1; i++)
{
var a = from + i * step;
var cos = Mathf.Cos(a);
var sin = Mathf.Sin(a);
var p = new Vector2(cos * radius.x, sin * radius.y) + position;
var uv = new Vector2(cos, sin) * 0.5f + Vector2.one * 0.5f;
list.Add(Vertex(p, uv, color));
var p2 = new Vector2(cos * radiusB.x, sin * radiusB.y) + position;
var uvr = Vector2.one - new Vector2(width / radius.x, width / radius.y);
var uv2 = new Vector2(cos * uvr.x, sin * uvr.y) * 0.5f + Vector2.one * 0.5f;
list.Add(Vertex(p2, uv2, color));
}
vh.AddUIVertexStream(list, ShapeTopology.TringleStrip(steps * 2).ToList());
}
public void Draw(VertexHelper vh, Vector2 center, Vector2 size)
{
vh.Clear();
list.Clear();
AddArc(new Vector2(size.x - RadiusUpRight, size.y - RadiusUpRight), RadiusUpRight, 0);
AddArc(new Vector2(-size.x + RadiusUpLeft, size.y - RadiusUpLeft), RadiusUpLeft, Mathf.PI * 0.5f);
AddArc(new Vector2(-size.x + RadiusBottomLeft, -size.y + RadiusBottomLeft), RadiusBottomLeft, Mathf.PI);
AddArc(new Vector2(size.x - RadiusBottomRight, -size.y + RadiusBottomRight), RadiusBottomRight, Mathf.PI * 1.5f);
AddVertex(new Vector2(size.x, size.y - RadiusUpRight));
AddVertex(new Vector2(size.x - Width, size.y - RadiusUpRight));
vh.AddUIVertexStream(list, ShapeTopology.TringleStrip((Steps + 1) * 8).ToList());
}
