C++ (Cpp) isIdentityOrTranslation Examples

Example #1

File: TransformationMatrix.cpp Project: flwh/Alcatel_OT_985_kernel

FloatPoint TransformationMatrix::mapPoint(const FloatPoint& p) const
{
    if (isIdentityOrTranslation())
        return FloatPoint(p.x() + static_cast<float>(m_matrix[3][0]), p.y() + static_cast<float>(m_matrix[3][1]));

    double x, y;
    multVecMatrix(p.x(), p.y(), x, y);
    return FloatPoint(static_cast<float>(x), static_cast<float>(y));
}

Example #2

File: TransformationMatrix.cpp Project: flwh/Alcatel_OT_985_kernel

FloatRect TransformationMatrix::mapRect(const FloatRect& r) const
{
    if (isIdentityOrTranslation()) {
        FloatRect mappedRect(r);
        mappedRect.move(static_cast<float>(m_matrix[3][0]), static_cast<float>(m_matrix[3][1]));
        return mappedRect;
    }

    FloatQuad resultQuad = mapQuad(FloatQuad(r));
    return resultQuad.boundingBox();
}

Example #3

File: AffineTransform.cpp Project: rmacnak-google/engine

// *this = *this * translation
AffineTransform& AffineTransform::translate(double tx, double ty)
{
    if (isIdentityOrTranslation()) {
        m_transform[4] += tx;
        m_transform[5] += ty;
        return *this;
    }

    m_transform[4] += tx * m_transform[0] + ty * m_transform[2];
    m_transform[5] += tx * m_transform[1] + ty * m_transform[3];
    return *this;
}

Example #4

File: TransformationMatrix.cpp Project: flwh/Alcatel_OT_985_kernel

bool TransformationMatrix::isInvertible() const
{
    if (isIdentityOrTranslation())
        return true;

    double det = WebCore::determinant4x4(m_matrix);

    if (fabs(det) < SMALL_NUMBER)
        return false;

    return true;
}

Example #5

File: AffineTransform.cpp Project: rmacnak-google/engine

FloatQuad AffineTransform::mapQuad(const FloatQuad& q) const
{
    if (isIdentityOrTranslation()) {
        FloatQuad mappedQuad(q);
        mappedQuad.move(narrowPrecisionToFloat(m_transform[4]), narrowPrecisionToFloat(m_transform[5]));
        return mappedQuad;
    }

    FloatQuad result;
    result.setP1(mapPoint(q.p1()));
    result.setP2(mapPoint(q.p2()));
    result.setP3(mapPoint(q.p3()));
    result.setP4(mapPoint(q.p4()));
    return result;
}

Example #6

File: AffineTransform.cpp Project: dslab-epfl/warr

FloatRect AffineTransform::mapRect(const FloatRect& rect) const
{
    if (isIdentityOrTranslation()) {
        FloatRect mappedRect(rect);
        mappedRect.move(narrowPrecisionToFloat(m_transform[4]), narrowPrecisionToFloat(m_transform[5]));
        return mappedRect;
    }

    FloatQuad result;
    result.setP1(mapPoint(rect.location()));
    result.setP2(mapPoint(FloatPoint(rect.right(), rect.y())));
    result.setP3(mapPoint(FloatPoint(rect.right(), rect.bottom())));
    result.setP4(mapPoint(FloatPoint(rect.x(), rect.bottom())));
    return result.boundingBox();
}

Example #7

File: TransformationMatrix.cpp Project: flwh/Alcatel_OT_985_kernel

FloatQuad TransformationMatrix::mapQuad(const FloatQuad& q) const
{
    if (isIdentityOrTranslation()) {
        FloatQuad mappedQuad(q);
        mappedQuad.move(static_cast<float>(m_matrix[3][0]), static_cast<float>(m_matrix[3][1]));
        return mappedQuad;
    }

    FloatQuad result;
    result.setP1(mapPoint(q.p1()));
    result.setP2(mapPoint(q.p2()));
    result.setP3(mapPoint(q.p3()));
    result.setP4(mapPoint(q.p4()));
    return result;
}

Example #8

File: TransformationMatrix.cpp Project: flwh/Alcatel_OT_985_kernel

TransformationMatrix TransformationMatrix::inverse() const 
{
    if (isIdentityOrTranslation()) {
        // identity matrix
        if (m_matrix[3][0] == 0 && m_matrix[3][1] == 0 && m_matrix[3][2] == 0)
            return TransformationMatrix();
        
        // translation
        return TransformationMatrix(1, 0, 0, 0,
                                    0, 1, 0, 0,
                                    0, 0, 1, 0,
                                    -m_matrix[3][0], -m_matrix[3][1], -m_matrix[3][2], 1);
    }
    
    TransformationMatrix invMat;
    bool inverted = WebCore::inverse(m_matrix, invMat.m_matrix);
    if (!inverted)
        return TransformationMatrix();
    
    return invMat;
}

Example #9

File: AffineTransform.cpp Project: rmacnak-google/engine

AffineTransform AffineTransform::inverse() const
{
    double determinant = det();
    if (determinant == 0.0)
        return AffineTransform();

    AffineTransform result;
    if (isIdentityOrTranslation()) {
        result.m_transform[4] = -m_transform[4];
        result.m_transform[5] = -m_transform[5];
        return result;
    }

    result.m_transform[0] = m_transform[3] / determinant;
    result.m_transform[1] = -m_transform[1] / determinant;
    result.m_transform[2] = -m_transform[2] / determinant;
    result.m_transform[3] = m_transform[0] / determinant;
    result.m_transform[4] = (m_transform[2] * m_transform[5]
                           - m_transform[3] * m_transform[4]) / determinant;
    result.m_transform[5] = (m_transform[1] * m_transform[4]
                           - m_transform[0] * m_transform[5]) / determinant;

    return result;
}