void wxGISDisplay::SetDeviceFrame(wxRect &rc)
{
m_oDeviceFrameRect = rc;
if(m_oDeviceFrameRect.GetWidth() % 2 != 0)
m_oDeviceFrameRect.SetWidth(m_oDeviceFrameRect.GetWidth() + 1);
if(m_oDeviceFrameRect.GetHeight() % 2 != 0)
m_oDeviceFrameRect.SetHeight(m_oDeviceFrameRect.GetHeight() + 1);
m_dFrameRatio = double(m_oDeviceFrameRect.GetWidth()) / m_oDeviceFrameRect.GetHeight();
m_CurrentBounds = m_RealBounds;
SetEnvelopeRatio(m_CurrentBounds, m_dFrameRatio);
m_dRotatedBoundsCenterX = m_CurrentBounds.MinX + (m_CurrentBounds.MaxX - m_CurrentBounds.MinX) / 2;
m_dRotatedBoundsCenterY = m_CurrentBounds.MinY + (m_CurrentBounds.MaxY - m_CurrentBounds.MinY) / 2;
m_CurrentBoundsRotated = m_CurrentBounds;
if(!IsDoubleEquil(m_dAngleRad, 0.0))
{
RotateEnvelope(m_CurrentBoundsRotated, m_dAngleRad, m_dRotatedBoundsCenterX, m_dRotatedBoundsCenterY);
SetEnvelopeRatio(m_CurrentBoundsRotated, m_dFrameRatio);//test
}
m_CurrentBoundsX8 = m_CurrentBoundsRotated;
IncreaseEnvelope(m_CurrentBoundsX8, 8);
cairo_destroy (m_cr_tmp);
cairo_surface_destroy (m_surface_tmp);
m_surface_tmp = cairo_image_surface_create (CAIRO_FORMAT_RGB24, m_oDeviceFrameRect.GetWidth(), m_oDeviceFrameRect.GetHeight());
m_cr_tmp = cairo_create (m_surface_tmp);
//compute current transform matrix
InitTransformMatrix();
}
OGREnvelope wxGISMapView::GetFullExtent(void)
{
OGREnvelope OutputEnv;
if(!IsDoubleEquil(m_dCurrentAngle, 0.0))
{
OutputEnv = m_FullExtent;
double dCenterX = m_FullExtent.MinX + (m_FullExtent.MaxX - m_FullExtent.MinX) / 2;
double dCenterY = m_FullExtent.MinY + (m_FullExtent.MaxY - m_FullExtent.MinY) / 2;
RotateEnvelope(OutputEnv, m_dCurrentAngle, dCenterX, dCenterY);
IncreaseEnvelope(OutputEnv, 0.1);
}
else
OutputEnv = wxGISMap::GetFullExtent();
return OutputEnv;
}
void wxGISDisplay::Clear()
{
wxCriticalSectionLocker locker(m_CritSect);
wxCHECK_RET(m_saLayerCaches.size() - m_nLastCacheID == m_nSysCacheCount, wxT("Draw caches inconsistent"));
if (m_saLayerCaches.size() > m_nSysCacheCount)
{
for(size_t i = 1; i <= m_nLastCacheID; ++i)
{
cairo_destroy(m_saLayerCaches[i].pCairoContext);
cairo_surface_destroy(m_saLayerCaches[i].pCairoSurface);
}
m_saLayerCaches.erase(m_saLayerCaches.begin() + 1, m_saLayerCaches.end() - (m_nSysCacheCount - 1));
}
//default map bounds
m_RealBounds.MinX = ENVMIN_X;
m_RealBounds.MaxX = ENVMAX_X;
m_RealBounds.MinY = ENVMIN_Y;
m_RealBounds.MaxY = ENVMAX_Y;
m_CurrentBounds = m_RealBounds;
SetEnvelopeRatio(m_CurrentBounds, m_dFrameRatio);
m_CurrentBoundsRotated = m_CurrentBounds;
m_dRotatedBoundsCenterX = m_CurrentBoundsRotated.MinX + (m_CurrentBoundsRotated.MaxX - m_CurrentBoundsRotated.MinX) / 2;
m_dRotatedBoundsCenterY = m_CurrentBoundsRotated.MinY + (m_CurrentBoundsRotated.MaxY - m_CurrentBoundsRotated.MinY) / 2;
m_CurrentBoundsX8 = m_CurrentBounds;
IncreaseEnvelope(m_CurrentBoundsX8, 8);
m_nLastCacheID = 0;
m_nCurrentLayer = 0;
m_dAngleRad = 0;
cairo_matrix_init(m_pMatrix, 1, 0, 0, 1, 0, 0);
cairo_matrix_init(m_pDisplayMatrix, 1, 0, 0, 1, 0, 0);
cairo_matrix_init(m_pDisplayMatrixNoRotate, 1, 0, 0, 1, 0, 0);
m_bZeroCacheSet = false;
InitTransformMatrix();
OnEraseBackground();
}
void wxGISDisplay::SetRotate(double dAngleRad)
{
m_dAngleRad = dAngleRad;
//for rotate panning & zooming
m_CurrentBoundsRotated = m_CurrentBounds;
m_dRotatedBoundsCenterX = m_CurrentBoundsRotated.MinX + (m_CurrentBoundsRotated.MaxX - m_CurrentBoundsRotated.MinX) / 2;
m_dRotatedBoundsCenterY = m_CurrentBoundsRotated.MinY + (m_CurrentBoundsRotated.MaxY - m_CurrentBoundsRotated.MinY) / 2;
if(!IsDoubleEquil(m_dAngleRad, 0.0))
{
RotateEnvelope(m_CurrentBoundsRotated, m_dAngleRad, m_dRotatedBoundsCenterX, m_dRotatedBoundsCenterY);
SetEnvelopeRatio(m_CurrentBoundsRotated, m_dFrameRatio);//test
}
m_CurrentBoundsX8 = m_CurrentBoundsRotated;
IncreaseEnvelope(m_CurrentBoundsX8, 8);
//compute current transform matrix
InitTransformMatrix();
SetAllCachesDerty(true);
}
void wxGISDisplay::SetBounds(const OGREnvelope& Bounds)
{
//update bounds to frame ratio
m_RealBounds = Bounds;
m_CurrentBounds = m_RealBounds;
SetEnvelopeRatio(m_CurrentBounds, m_dFrameRatio);
m_dRotatedBoundsCenterX = m_CurrentBounds.MinX + (m_CurrentBounds.MaxX - m_CurrentBounds.MinX) / 2;
m_dRotatedBoundsCenterY = m_CurrentBounds.MinY + (m_CurrentBounds.MaxY - m_CurrentBounds.MinY) / 2;
m_CurrentBoundsRotated = m_CurrentBounds;
if(!IsDoubleEquil(m_dAngleRad, 0.0))
{
RotateEnvelope(m_CurrentBoundsRotated, m_dAngleRad, m_dRotatedBoundsCenterX, m_dRotatedBoundsCenterY);
SetEnvelopeRatio(m_CurrentBoundsRotated, m_dFrameRatio);//test
}
m_CurrentBoundsX8 = m_CurrentBoundsRotated;
IncreaseEnvelope(m_CurrentBoundsX8, 8);
SetAllCachesDerty(true);
//compute current transform matrix
InitTransformMatrix();
}
