Method sobel

src_generators/normalmapgenerator.cpp:116–127

}

QVector3D NormalmapGenerator::sobel(const double convolution_kernel[3][3], double strengthInv) const {
    const double top_side    = convolution_kernel[0][0] + 2.0 * convolution_kernel[0][1] + convolution_kernel[0][2];
    const double bottom_side = convolution_kernel[2][0] + 2.0 * convolution_kernel[2][1] + convolution_kernel[2][2];
    const double right_side  = convolution_kernel[0][2] + 2.0 * convolution_kernel[1][2] + convolution_kernel[2][2];
    const double left_side   = convolution_kernel[0][0] + 2.0 * convolution_kernel[1][0] + convolution_kernel[2][0];

    const double dY = right_side - left_side;
    const double dX = bottom_side - top_side;
    const double dZ = strengthInv;

    return QVector3D(dX, dY, dZ).normalized();
}

QVector3D NormalmapGenerator::prewitt(const double convolution_kernel[3][3], double strengthInv) const {
    const double top_side    = convolution_kernel[0][0] + convolution_kernel[0][1] + convolution_kernel[0][2];