private List <Vector2> MakeRoundRectLineLoop(BoundRect br, float cornerR, float arcMax)
{
int cornerDiv = Mathf.Max(4, (int)Mathf.Ceil(cornerR * Mathf.PI * 0.5f / arcMax));
// Debug.Log("div:" + cornerDiv);
float angle_offset;
var innerCorners = new Vector2[4];
if (br.GetAspectRatio() < 1.0f)
{
angle_offset = 0.0f;
innerCorners[0] = new Vector2(br.right - cornerR, br.top - cornerR);
innerCorners[1] = new Vector2(br.right - cornerR, br.bottom + cornerR);
innerCorners[2] = new Vector2(br.left + cornerR, br.bottom + cornerR);
innerCorners[3] = new Vector2(br.left + cornerR, br.top - cornerR);
}
else
{
angle_offset = Mathf.PI * 0.5f;
innerCorners[0] = new Vector2(br.right - cornerR, br.bottom + cornerR);
innerCorners[1] = new Vector2(br.left + cornerR, br.bottom + cornerR);
innerCorners[2] = new Vector2(br.left + cornerR, br.top - cornerR);
innerCorners[3] = new Vector2(br.right - cornerR, br.top - cornerR);
}
var ret = new List <Vector2>(cornerDiv * 4 + 4);
for (int i = 0; i < 4; i++)
{
Vector2 ip = innerCorners[i];
float base_angle = Mathf.PI * 2.0f * (float)i * 0.25f + angle_offset;
for (int div = 0; div <= cornerDiv; div++)
{
float angle = (float)div / (float)cornerDiv * Mathf.PI * 0.5f + base_angle;
var v = new Vector2(
Mathf.Sin(angle) * cornerR + ip.x,
Mathf.Cos(angle) * cornerR + ip.y
);
ret.Add(v);
}
}
// To make beaty fill mesh.
int lastindex = ret.Count - 1;
var tmpv = ret[lastindex];
ret.RemoveAt(lastindex);
ret.Insert(0, tmpv);
return(ret);
}
private List <Vector2> MakeCapsuleLineLoop(BoundRect br, float arcMax)
{
float capRadius = Mathf.Min(br.GetWidth(), br.GetHeight()) * 0.5f;
int capDiv = Mathf.Max(4, (int)Mathf.Ceil(capRadius * Mathf.PI / arcMax)) & (~0x1);
// Debug.Log("div:" + cornerDiv);
float angle_offset;
var capPivots = new Vector2[4];
if (br.GetAspectRatio() < 1.0f)
{
angle_offset = Mathf.PI * -0.5f;
capPivots[0] = new Vector2((br.left + br.right) * 0.5f, br.top - capRadius);
capPivots[1] = new Vector2((br.left + br.right) * 0.5f, br.bottom + capRadius);
}
else
{
angle_offset = 0.0f;
capPivots[0] = new Vector2(br.right - capRadius, (br.top + br.bottom) * 0.5f);
capPivots[1] = new Vector2(br.left + capRadius, (br.top + br.bottom) * 0.5f);
}
var ret = new List <Vector2>(capDiv * 2 + 2);
for (int i = 0; i < 2; i++)
{
Vector2 cp = capPivots[i];
float base_angle = Mathf.PI * 2.0f * (float)i * 0.5f + angle_offset;
for (int div = 0; div <= capDiv; div++)
{
float angle = (float)div / (float)capDiv * Mathf.PI + base_angle;
var v = new Vector2(
Mathf.Sin(angle) * capRadius + cp.x,
Mathf.Cos(angle) * capRadius + cp.y
);
ret.Add(v);
}
}
// To make beaty fill mesh.
for (int i = 0; i < capDiv / 2; i++)
{
var tmpv = ret[0];
ret.RemoveAt(0);
ret.Add(tmpv);
}
return(ret);
}