public static void LineToPolygon(CCPoint[] points, float stroke, ccVertex2F[] vertices, int offset, int nuPoints)
{
int num;
CCPoint cCPoint;
nuPoints = nuPoints + offset;
if (nuPoints <= 1)
{
return;
}
stroke = stroke * 0.5f;
int num1 = nuPoints - 1;
for (int i = offset; i < nuPoints; i++)
{
num = i * 2;
CCPoint cCPoint1 = points[i];
if (i == 0)
{
cCPoint = CCPointExtension.ccpPerp(CCPointExtension.ccpNormalize(CCPointExtension.ccpSub(cCPoint1, points[i + 1])));
}
else if (i != num1)
{
CCPoint cCPoint2 = points[i + 1];
CCPoint cCPoint3 = points[i - 1];
CCPoint cCPoint4 = CCPointExtension.ccpNormalize(CCPointExtension.ccpSub(cCPoint2, cCPoint1));
CCPoint cCPoint5 = CCPointExtension.ccpNormalize(CCPointExtension.ccpSub(cCPoint3, cCPoint1));
float single = (float)Math.Acos((double)CCPointExtension.ccpDot(cCPoint4, cCPoint5));
if (single >= ccMacros.CC_DEGREES_TO_RADIANS(70f))
{
cCPoint = (single >= ccMacros.CC_DEGREES_TO_RADIANS(170f) ? CCPointExtension.ccpPerp(CCPointExtension.ccpNormalize(CCPointExtension.ccpSub(cCPoint2, cCPoint3))) : CCPointExtension.ccpNormalize(CCPointExtension.ccpMidpoint(cCPoint4, cCPoint5)));
}
else
{
cCPoint = CCPointExtension.ccpPerp(CCPointExtension.ccpNormalize(CCPointExtension.ccpMidpoint(cCPoint4, cCPoint5)));
}
}
else
{
cCPoint = CCPointExtension.ccpPerp(CCPointExtension.ccpNormalize(CCPointExtension.ccpSub(points[i - 1], cCPoint1)));
}
cCPoint = CCPointExtension.ccpMult(cCPoint, stroke);
vertices[num] = new ccVertex2F(cCPoint1.x + cCPoint.x, cCPoint1.y + cCPoint.y);
vertices[num + 1] = new ccVertex2F(cCPoint1.x - cCPoint.x, cCPoint1.y - cCPoint.y);
}
offset = (offset == 0 ? 0 : offset - 1);
for (int j = offset; j < num1; j++)
{
num = j * 2;
int num2 = num + 2;
ccVertex2F _ccVertex2F = vertices[num];
ccVertex2F _ccVertex2F1 = vertices[num + 1];
ccVertex2F _ccVertex2F2 = vertices[num2];
ccVertex2F _ccVertex2F3 = vertices[num2 + 1];
float single1 = 0f;
bool flag = !CCVertex.LineIntersect(_ccVertex2F.x, _ccVertex2F.y, _ccVertex2F3.x, _ccVertex2F3.y, _ccVertex2F1.x, _ccVertex2F1.y, _ccVertex2F2.x, _ccVertex2F2.y, out single1);
if (!flag && (single1 < 0f || single1 > 1f))
{
flag = true;
}
if (flag)
{
vertices[num2] = _ccVertex2F3;
vertices[num2 + 1] = _ccVertex2F2;
}
}
}
