private static void AnglesToArcs(CornerRounderContext context)
{
PrepareRadiusInfo(context);
CornerRounderConfig config = context.config;
RadiusStrategy strategy = config.radiusStrategy;
if (strategy == RadiusStrategy.Never)
{
return;
}
LinkedList <CornerInfo> cornerInfo = context.cornerInfo;
LinkedListNode <CornerInfo> current = cornerInfo.First;
while (current != null)
{
if (current.Previous != null && current.Next != null)
{
CornerInfo c0 = current.Previous.Value;
CornerInfo c1 = current.Value;
CornerInfo c2 = current.Next.Value;
Vector3 p0 = c0.vertex;
Vector3 p1 = c1.vertex;
Vector3 p2 = c2.vertex;
float radius = c1.radiusAdjusted;
if (radius != 0)
{
float halfAngle = c1.angle * 0.5f;
float tan = Mathf.Tan(halfAngle);
float cutLen = radius / tan;
// 截断点
Vector3 cut1 = p1 + (p0 - p1).normalized * cutLen;
Vector3 cut2 = p1 + (p2 - p1).normalized * cutLen;
// 顶点到圆心距离
float vertexToCenter = radius / Mathf.Sin(halfAngle);
// 圆心
Vector3 center = ((cut1 - p1) + (cut2 - p1)).normalized * vertexToCenter + p1;
CornerInfo value = current.Value;
CornerInfo.Round(ref value, center, cut1, cut2);
current.Value = value;
}
}
current = current.Next;
}
}
public void CalculateFOV(int startx, int starty, float force, float decay, RadiusStrategy rStrat)
{
m_StartX = startx;
m_StartY = starty;
m_Force = force;
m_Decay = decay;
m_RadiusStrategy = rStrat;
m_Radius = (force / decay);
m_Board.Visit(startx, starty);
foreach (Direction d in Direction.DIAGONALS)
{
CastLight(1, 1.0f, 0.0f, 0, d.m_DeltaX, d.m_DeltaY, 0);
CastLight(1, 1.0f, 0.0f, d.m_DeltaX, 0, 0, d.m_DeltaY);
}
}
private static void PrepareRadiusInfo(CornerRounderContext context)
{
CornerRounderConfig config = context.config;
RadiusStrategy strategy = config.radiusStrategy;
if (strategy == RadiusStrategy.Never)
{
return;
}
LinkedList <CornerInfo> cornerInfo = context.cornerInfo;
LinkedListNode <CornerInfo> current = cornerInfo.First;
while (current != null)
{
if (current.Previous != null && current.Next != null)
{
CornerInfo info = current.Value;
float angle = MathUtils.Angle(current.Previous.Value, current.Value, current.Next.Value);
info.angle = angle;
switch (strategy)
{
case RadiusStrategy.Unified:
info.radiusExpected = config.radiusTarget;
break;
case RadiusStrategy.Adaptive:
info.radiusExpected = Mathf.Lerp(config.radiusMin, config.radiusMax, angle / 3.14f);
break;
}
current.Value = info;
}
current = current.Next;
}
// 重置 再循环一遍
current = cornerInfo.First;
while (current != null)
{
if (current.Previous != null && current.Next != null)
{
CornerInfo c0 = current.Previous.Value;
CornerInfo c1 = current.Value;
CornerInfo c2 = current.Next.Value;
bool previousIsDirty = RadiusAdjust(ref c0, ref c1, ref c2);
current.Previous.Value = c0;
current.Value = c1;
current.Next.Value = c2;
if (previousIsDirty)
{
current = current.Previous;
}
}
current = current.Next;
}
}
