static const OrientationInfoList& orientationInfoList()
{
static OrientationInfoList list;
if (list.size() == 0) {
QMatrix rot90 = createRotMatrix(90);
QMatrix hflip = createScaleMatrix(-1, 1);
QMatrix vflip = createScaleMatrix(1, -1);
list
<< OrientationInfo()
<< OrientationInfo(NORMAL, QMatrix(), JXFORM_NONE)
<< OrientationInfo(HFLIP, hflip, JXFORM_FLIP_H)
<< OrientationInfo(ROT_180, createRotMatrix(180), JXFORM_ROT_180)
<< OrientationInfo(VFLIP, vflip, JXFORM_FLIP_V)
<< OrientationInfo(TRANSPOSE, hflip * rot90, JXFORM_TRANSPOSE)
<< OrientationInfo(ROT_90, rot90, JXFORM_ROT_90)
<< OrientationInfo(TRANSVERSE, vflip * rot90, JXFORM_TRANSVERSE)
<< OrientationInfo(ROT_270, createRotMatrix(270), JXFORM_ROT_270)
;
}
return list;
}
Matrix create3DTransformationMatrix
(
Vector3 eye,
Vector3 target,
Vector3 up,
double left,
double top,
double width,
double height
)
{
Matrix lookAt = createLookAtMatrix(eye, target, up);
Matrix perspective = createRawPerspectiveMatrix();
double minDim = std::min(width, height);
Matrix scale = createScaleMatrix(minDim, -minDim, 1);
Matrix viewport = createTranslateMatrix(left + width / 2.0, top + height / 2.0, 0);
return lookAt % perspective % scale % viewport;
}