Method getTransformAtTime

Engine/RotoDrawableItem.cpp:1399–1422

}

void
RotoDrawableItem::getTransformAtTime(double time,
                                     Transform::Matrix3x3* matrix) const
{
    double tx = _imp->translate->getValueAtTime(time, 0);
    double ty = _imp->translate->getValueAtTime(time, 1);
    double sx = _imp->scale->getValueAtTime(time, 0);
    double sy = _imp->scaleUniform->getValueAtTime(time) ? sx : _imp->scale->getValueAtTime(time, 1);
    double skewX = _imp->skewX->getValueAtTime(time, 0);
    double skewY = _imp->skewY->getValueAtTime(time, 0);
    double rot = _imp->rotate->getValueAtTime(time, 0);

    rot = Transform::toRadians(rot);
    double centerX = _imp->center->getValueAtTime(time, 0);
    double centerY = _imp->center->getValueAtTime(time, 1);
    bool skewOrderYX = _imp->skewOrder->getValueAtTime(time) == 1;
    *matrix = Transform::matTransformCanonical(tx, ty, sx, sy, skewX, skewY, skewOrderYX, rot, centerX, centerY);

    Transform::Matrix3x3 extraMat;
    extraMat.a = _imp->extraMatrix->getValueAtTime(time, 0); extraMat.b = _imp->extraMatrix->getValueAtTime(time, 1); extraMat.c = _imp->extraMatrix->getValueAtTime(time, 2);
    extraMat.d = _imp->extraMatrix->getValueAtTime(time, 3); extraMat.e = _imp->extraMatrix->getValueAtTime(time, 4); extraMat.f = _imp->extraMatrix->getValueAtTime(time, 5);
    extraMat.g = _imp->extraMatrix->getValueAtTime(time, 6); extraMat.h = _imp->extraMatrix->getValueAtTime(time, 7); extraMat.i = _imp->extraMatrix->getValueAtTime(time, 8);
    *matrix = Transform::matMul(*matrix, extraMat);
}

/**
 * @brief Set the transform at the given time