//-----------------------------------------------------------------------
internal void finishCurve(char lc)
{
int n;
if (lc == 'c' || lc == 'C' || lc == 's' || lc == 'S')
{
n = 3;
}
else if (lc == 'q' || lc == 'Q' || lc == 't' || lc == 'T')
{
n = 2;
}
else
{
n = curve.size() - 1;
}
for (int i = 0; i < curve.size(); i += n)
{
if (i + 3 >= curve.size())
{
break;
}
BezierCurve2 bc2 = new BezierCurve2();
bc2.setNumSeg(mNumSeg);
bc2.addPoint(curve[i + 0]);
bc2.addPoint(curve[i + 1]);
bc2.addPoint(curve[i + 2]);
bc2.addPoint(curve[i + 3]);
Shape bc2shape = bc2.realizeShape();
//Vector2 lp = shape.getPoint(shape.getPoints().size() - 1);
Vector2 lp = shape.getPoint(shape.getPointCount() - 1);
//for (std::vector<Vector2>::iterator iter = bc2shape.getPoints().begin(); iter != bc2shape.getPoints().end(); iter++)
for (int j = 0; j < bc2shape.getPointCount(); j++)
{
//if (iter == bc2shape.getPoints().begin())
if (j == 0)
{
//if (*iter != lp) shape.addPoint(*iter);
if (bc2shape.getPointsReference()[j] != lp)
{
shape.addPoint(bc2shape.getPointsReference()[j]);
}
}
else
{
shape.addPoint(bc2shape.getPointsReference()[j]);//shape.addPoint(*iter);
}
}
}
curve.clear();
}
void parseArcTo(bool rel, bool next)
{
if (next)
{
index++;
}
float rx = 0.0f;
if (!parseReal(ref rx))
{
OGRE_EXCEPT("Exception::ERR_INVALIDPARAMS", "Expecting a Real number", "parseCurveSTo");
}
float ry = 0.0f;
if (!parseReal(ref ry))
{
OGRE_EXCEPT("Exception::ERR_INVALIDPARAMS", "Expecting a Real number", "parseCurveSTo");
}
float x_axis_rotation = 0.0f;
if (!parseReal(ref x_axis_rotation))
{
OGRE_EXCEPT("Exception::ERR_INVALIDPARAMS", "Expecting a Real number", "parseCurveSTo");
}
float large_arc_flag = 0.0f;
if (!parseReal(ref large_arc_flag))
{
OGRE_EXCEPT("Exception::ERR_INVALIDPARAMS", "Expecting a Real number", "parseCurveSTo");
}
float sweep_flag = 0.0f;
if (!parseReal(ref sweep_flag))
{
OGRE_EXCEPT("Exception::ERR_INVALIDPARAMS", "Expecting a Real number", "parseCurveSTo");
}
float x = 0.0f;
if (!parseReal(ref x))
{
OGRE_EXCEPT("Exception::ERR_INVALIDPARAMS", "Expecting a Real number", "parseCurveSTo");
}
float y = 0.0f;
if (!parseReal(ref y))
{
OGRE_EXCEPT("Exception::ERR_INVALIDPARAMS", "Expecting a Real number", "parseCurveSTo");
}
float RadiansPerDegree = Math.PI / 180.0f;
float epx = rel ? point.x + x : x;
float epy = rel ? point.y + y : y;
bool largeArc = (large_arc_flag > 0);
bool clockwise = (sweep_flag > 0);
if (epx == point.x && epy == point.y)
{
return;
}
if (rx == 0.0f && ry == 0.0f)
{
point = new Vector2(epx, epy);
shape.addPoint(point);
return;
}
float sinPhi = sin(x_axis_rotation * RadiansPerDegree);
float cosPhi = cos(x_axis_rotation * RadiansPerDegree);
float x1dash = cosPhi * (point.x - epx) / 2.0f + sinPhi * (point.y - epy) / 2.0f;
float y1dash = -sinPhi * (point.x - epx) / 2.0f + cosPhi * (point.y - epy) / 2.0f;
float root;
float numerator = rx * rx * ry * ry - rx * rx * y1dash * y1dash - ry * ry * x1dash * x1dash;
if (numerator < 0.0)
{
float s = (float)sqrt(1.0f - numerator / (rx * rx * ry * ry));
rx *= s;
ry *= s;
root = 0.0f;
}
else
{
root = ((largeArc && clockwise) || (!largeArc && !clockwise) ? -1.0f : 1.0f) * sqrt(numerator / (rx * rx * y1dash * y1dash + ry * ry * x1dash * x1dash));
}
float cxdash = root * rx * y1dash / ry;
float cydash = -root * ry * x1dash / rx;
float cx = cosPhi * cxdash - sinPhi * cydash + (point.x + epx) / 2.0f;
float cy = sinPhi * cxdash + cosPhi * cydash + (point.y + epy) / 2.0f;
float theta1 = CalculateVectorAngle(1.0f, 0.0f, (x1dash - cxdash) / rx, (y1dash - cydash) / ry);
float dtheta = CalculateVectorAngle((x1dash - cxdash) / rx, (y1dash - cydash) / ry, (-x1dash - cxdash) / rx, (-y1dash - cydash) / ry);
if (!clockwise && dtheta > 0)
{
dtheta -= 2.0f * Math.PI;
}
else if (clockwise && dtheta < 0)
{
dtheta += 2.0f * Math.PI;
}
int segments = (int)ceil((double)abs(dtheta / (Math.PI / 2.0f)));
float delta = dtheta / segments;
float t = 8.0f / 3.0f * sin(delta / 4.0f) * sin(delta / 4.0f) / sin(delta / 2.0f);
float startX = point.x;
float startY = point.y;
BezierCurve2 bezier = new BezierCurve2();
bezier.addPoint(startX, startY);
for (int i = 0; i < segments; ++i)
{
float cosTheta1 = cos(theta1);
float sinTheta1 = sin(theta1);
float theta2 = theta1 + delta;
float cosTheta2 = cos(theta2);
float sinTheta2 = sin(theta2);
float endpointX = cosPhi * rx * cosTheta2 - sinPhi * ry * sinTheta2 + cx;
float endpointY = sinPhi * rx * cosTheta2 + cosPhi * ry * sinTheta2 + cy;
float dx1 = t * (-cosPhi * rx * sinTheta1 - sinPhi * ry * cosTheta1);
float dy1 = t * (-sinPhi * rx * sinTheta1 + cosPhi * ry * cosTheta1);
float dxe = t * (cosPhi * rx * sinTheta2 + sinPhi * ry * cosTheta2);
float dye = t * (sinPhi * rx * sinTheta2 - cosPhi * ry * cosTheta2);
bezier.addPoint(startX + dx1, startY + dy1);
bezier.addPoint(endpointX + dxe, endpointY + dye);
theta1 = theta2;
startX = endpointX;
startY = endpointY;
}
point = new Vector2(epx, epy);
bezier.addPoint(point);
bezier.setNumSeg(mNumSeg);
std_vector <Vector2> pointList = bezier.realizeShape().getPointsReference();//getPoints();
Vector2 lp = shape.getPoint(shape.getPoints().Length - 1);
//for (std::vector<Vector2>::iterator iter = pointList.begin(); iter != pointList.end(); iter++)
for (int ii = 0; ii < pointList.size(); ii++)
{
//if (iter == pointList.begin())
if (ii == 0)
{
//if (*iter != lp) shape.addPoint(*iter);
if (pointList[ii] != lp)
{
shape.addPoint(pointList[ii]);
}
}
else
{
shape.addPoint(pointList[ii]);//shape.addPoint(*iter);
}
}
}
