/**
* Generate a set of contour lines to be draped on the terrain.
*
* \param fInterval The vertical spacing between the contours. For example,
* if the elevation range of your data is from 50 to 350 meters, then
* an fIterval of 100 will place contour bands at 100,200,300 meters.
*/
void ContourConverter::GenerateContours(float fInterval)
{
float fMin, fMax;
vtHeightField *hf = m_pHF;
hf->GetHeightExtents(fMin, fMax);
int start = (int) (fMin / fInterval) + 1;
int stop = (int) (fMax / fInterval);
SetQuikGridCallbackFunction(ReceiveContourPoint1, this);
for (int i = start; i <= stop; i++)
{
m_fAltitude = i * fInterval;
Contour(*m_pGrid, i * fInterval);
}
}
/**
* Generate a set of contour lines to be draped on the terrain.
*
* \param fInterval The vertical spacing between the contours. For example,
* if the elevation range of your data is from 50 to 350 meters, then
* an fIterval of 100 will place contour bands at 100,200,300 meters.
*/
void vtContourConverter::GenerateContours(float fInterval)
{
float fMin, fMax;
vtHeightField *hf;
if (m_pHF)
hf = m_pHF;
else
hf = m_pTerrain->GetTiledGeom();
if (!hf)
return;
hf->GetHeightExtents(fMin, fMax);
int start = (int) (fMin / fInterval) + 1;
int stop = (int) (fMax / fInterval);
SetQuikGridCallbackFunction(ReceiveContourPoint2, this);
for (int i = start; i <= stop; i++)
{
m_fAltitude = i * fInterval;
Contour(*m_pGrid, i * fInterval);
}
}
/**
* Generate a contour line to be draped on the terrain.
*
* \param fAlt The altitude (elevation) of the line to be generated.
*/
void ContourConverter::GenerateContour(float fAlt)
{
SetQuikGridCallbackFunction(ReceiveContourPoint1, this);
m_fAltitude = fAlt;
Contour(*m_pGrid, fAlt);
}
