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C-/C++-Quelltext

/* @param: float fRotX        Rotation um die X-Achse
 * @param: float fRotY        Rotation um die Y-Achse
 */
void harvesterCamera::rotateCamera(float fRotX, float fRotY)
{
    m_fCurrentRotationX += fRotX; // bisher gemachte rotation um x - achse

    m_fCurrentRotationY += fRotY; // bisher gemachte rotation um y - achse


    D3DXMATRIX mRotX;        // Rotationsmatrix X-Achse

    D3DXMATRIX mRotY;        // Rotationsmatrix Y-Achse

    // Rotationsmatrix X-Achse erstellen

    D3DXMatrixRotationX(&mRotX,m_fCurrentRotationY);
    // Rotationsmatrix Y-Achse erstellen

    D3DXMatrixRotationY(&mRotY,m_fCurrentRotationX);

    D3DXMatrixMultiply(&m_matView,&m_matView,&mRotX);
    D3DXMatrixMultiply(&m_matView,&m_matView,&mRotY);

    // @todo: bei der Rotation um die X-Achse gibt es noch ein Problem

    D3DXVECTOR3 newEyePoint;
    newEyePoint.x = m_vEyePt.x * m_matView[0] + m_vEyePt.y * m_matView[4] + m_vEyePt.z * m_matView[8];
    newEyePoint.y = m_vEyePt.x * m_matView[1] + m_vEyePt.y * m_matView[5] + m_vEyePt.z * m_matView[9];
    newEyePoint.z = m_vEyePt.x * m_matView[2] + m_vEyePt.y * m_matView[6] + m_vEyePt.z * m_matView[10];

    m_vEyePt.x = newEyePoint.x;
    m_vEyePt.y = newEyePoint.y;
    m_vEyePt.z = newEyePoint.z;

    // alle Positionsangaben werden in eine Matrix umgewandelt.

    D3DXMatrixLookAtLH( &m_matView, &m_vEyePt, // Position

        &m_vLookatPt, // Blickpunkt

        &m_vUpVec); // UpVektor

}

C-/C++-Quelltext

if (RAD2DEG(m_fCurrentRotationY) < -90)
    {
        m_fCurrentRotationY += 2*D3DX_PI;
        this->m_vUpVec.y *= -1;
    }
    else if (RAD2DEG(m_fCurrentRotationY) < 90 && this->m_vUpVec.y==-1)
    {
        this->m_vUpVec.y *= -1;
    }
    else if (RAD2DEG(m_fCurrentRotationY) > 90 && this->m_vUpVec.y==1)
    {
        this->m_vUpVec.y *= -1;
    }