public void SetRotationAboutEye(double x, double y, double z)
{
msgMatrix matx = new msgMatrix();
msgVectorStruct LookAtPos = new msgVectorStruct();
matx.Rotate(zero_p, x_axe, x / 180.0 * Math.PI);
matx.Rotate(zero_p, z_axe, -z / 180.0 * Math.PI);
LookAtPos.x = 0.0;
LookAtPos.y = m_fFocalLength;
LookAtPos.z = 0.0;
matx.ApplyMatrixToVector(zero_p, LookAtPos);
m_fLookAtPos.x = m_fEyePos.x + LookAtPos.x;
m_fLookAtPos.y = m_fEyePos.y + LookAtPos.y;
m_fLookAtPos.z = m_fEyePos.z + LookAtPos.z;
// Calculate our camera's UpVector using ONLY the 'X' (Pitch) and 'Z' (Yaw)
// parameters
m_fUpVector = z_axe;
matx.ApplyMatrixToVector(zero_p, m_fUpVector);
// Just save the 'y' value for later use when calculating the camera's 'Up' vector
// prior to calling gluLookAt()
m_fRoll = y;
}
private void PrepareMatrix(double Ox, double Oy, double Oz,
double Rx, double Ry, double Rz,
double Tx, double Ty, double Tz,
ref msgMatrix XForm)
{
XForm.Identity();
msgVectorStruct TransV = new msgVectorStruct();
TransV.x = Tx;
TransV.y = Ty;
TransV.z = Tz;
XForm.Translate(TransV);
XForm.Rotate(zero_p, x_axe, Rx);
XForm.Rotate(zero_p, y_axe, Ry);
XForm.Rotate(zero_p, z_axe, Rz);
msgVectorStruct oV = new msgVectorStruct();
oV.x = Ox;
oV.y = Oy;
oV.z = Oz;
XForm.Translate(oV);
}
public void CalculateUpVector()
{
msgMatrix matx = new msgMatrix();
matx.Rotate(zero_p, x_axe, m_fPitch / 180.0 * Math.PI);
matx.Rotate(zero_p, z_axe, -m_fYaw / 180.0 * Math.PI);
m_fUpVector = z_axe;
matx.ApplyMatrixToVector(zero_p, m_fUpVector);
}
public void PositionCamera()
{
if (m_bResetClippingPlanes)
{
// Reset our cameras clipping plane
ResetView(0, 0);
m_bResetClippingPlanes = false;
}
if (m_fRoll != 0)
{
msgMatrix matx = new msgMatrix();
msgVectorStruct UpVector;
matx.Rotate(zero_p, x_axe, m_fPitch / 180.0 * Math.PI);
matx.Rotate(zero_p, y_axe, m_fRoll / 180.0 * Math.PI);
matx.Rotate(zero_p, z_axe, -m_fYaw / 180.0 * Math.PI);
UpVector = z_axe;
matx.ApplyMatrixToVector(zero_p, UpVector);
// Position the camera using the newly calculated 'Up' vector
OpenGLControl.gluLookAt(m_fEyePos.x, m_fEyePos.y, m_fEyePos.z,
m_fLookAtPos.x, m_fLookAtPos.y, m_fLookAtPos.z,
UpVector.x, UpVector.y, UpVector.z);
}
else
{
// Since our 'Up' vector has already been calculated, all we need to do is
// position the camera..
OpenGLControl.gluLookAt(m_fEyePos.x, m_fEyePos.y, m_fEyePos.z,
m_fLookAtPos.x, m_fLookAtPos.y, m_fLookAtPos.z,
m_fUpVector.x, m_fUpVector.y, m_fUpVector.z);
}
// Save the Model view matrix. This is used later for
// conversion of mouse coordinates to world coordinates.
OpenGLControl.glGetDoublev(OpenGLControl.GL_MODELVIEW_MATRIX, m_dModelViewMatrix);
}
public void SetRotationAboutLookAt(double x, double y, double z)
{
msgMatrix matx = new msgMatrix();
msgVectorStruct EyePos = new msgVectorStruct();
matx.Rotate(zero_p, x_axe, x / 180.0 * Math.PI);
matx.Rotate(zero_p, z_axe, -z / 180.0 * Math.PI);
EyePos.x = 0.0;
EyePos.y = -m_fFocalLength;
EyePos.z = 0.0;
matx.ApplyMatrixToVector(zero_p, EyePos);
m_fEyePos.x = EyePos.x + m_fLookAtPos.x;
m_fEyePos.y = EyePos.y + m_fLookAtPos.y;
m_fEyePos.z = EyePos.z + m_fLookAtPos.z;
// Calculate our camera's UpVector using ONLY the 'X' (Pitch) and 'Z' (Yaw)
// parameters
m_fUpVector = z_axe;
matx.ApplyMatrixToVector(zero_p, m_fUpVector);
// Just save the 'y' value for later use when calculating the camera's 'Up' vector
// prior to calling gluLookAt()
m_fRoll = y;
}
public void CalculateUpVector()
{
msgMatrix matx = new msgMatrix();
matx.Rotate(zero_p, x_axe, m_fPitch / 180.0 * Math.PI);
matx.Rotate(zero_p, z_axe, -m_fYaw / 180.0 * Math.PI);
m_fUpVector = z_axe;
matx.ApplyMatrixToVector(zero_p, m_fUpVector);
}
public void PositionCamera()
{
if (m_bResetClippingPlanes)
{
// Reset our cameras clipping plane
ResetView(0, 0);
m_bResetClippingPlanes = false;
}
if (m_fRoll != 0)
{
msgMatrix matx = new msgMatrix();
msgVectorStruct UpVector;
matx.Rotate(zero_p, x_axe, m_fPitch / 180.0 * Math.PI);
matx.Rotate(zero_p, y_axe, m_fRoll / 180.0 * Math.PI);
matx.Rotate(zero_p, z_axe, -m_fYaw / 180.0 * Math.PI);
UpVector = z_axe;
matx.ApplyMatrixToVector(zero_p, UpVector);
// Position the camera using the newly calculated 'Up' vector
OpenGLControl.gluLookAt(m_fEyePos.x, m_fEyePos.y, m_fEyePos.z,
m_fLookAtPos.x, m_fLookAtPos.y, m_fLookAtPos.z,
UpVector.x, UpVector.y, UpVector.z);
}
else
{
// Since our 'Up' vector has already been calculated, all we need to do is
// position the camera..
OpenGLControl.gluLookAt(m_fEyePos.x, m_fEyePos.y, m_fEyePos.z,
m_fLookAtPos.x, m_fLookAtPos.y, m_fLookAtPos.z,
m_fUpVector.x, m_fUpVector.y, m_fUpVector.z);
}
// Save the Model view matrix. This is used later for
// conversion of mouse coordinates to world coordinates.
OpenGLControl.glGetDoublev(OpenGLControl.GL_MODELVIEW_MATRIX, m_dModelViewMatrix);
}
private void PrepareMatrix(double Ox, double Oy, double Oz,
double Rx, double Ry, double Rz,
double Tx, double Ty, double Tz,
ref msgMatrix XForm)
{
XForm.Identity();
msgVectorStruct TransV = new msgVectorStruct();
TransV.x = Tx;
TransV.y = Ty;
TransV.z = Tz;
XForm.Translate(TransV);
XForm.Rotate(zero_p, x_axe, Rx);
XForm.Rotate(zero_p, y_axe, Ry);
XForm.Rotate(zero_p, z_axe, Rz);
msgVectorStruct oV = new msgVectorStruct();
oV.x = Ox;
oV.y = Oy;
oV.z = Oz;
XForm.Translate(oV);
}
