//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
cvf::Vec3f RivGridBoxGenerator::cornerDirection(FaceType face1, FaceType face2)
{
cvf::Vec3f dir = sideNormalOutwards(face1) + sideNormalOutwards(face2);
dir.normalize();
return dir;
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RivGridBoxGenerator::updateFromCamera(const cvf::Camera* camera)
{
m_gridBoxModel->removeAllParts();
if (m_gridBoxFaceParts.size() == 0) return;
std::vector<bool> faceVisibility(6, false);
for (size_t i = POS_X; i <= NEG_Z; i++)
{
bool isFaceVisible = false;
cvf::Vec3f sideNorm = sideNormalOutwards((FaceType)i);
if (camera->projection() == cvf::Camera::PERSPECTIVE)
{
cvf::Vec3d camToSide = camera->position() - pointOnSide((FaceType)i);
camToSide.normalize();
isFaceVisible = sideNorm.dot(cvf::Vec3f(camToSide)) < 0.0;
}
else
{
cvf::Vec3d camToSide = camera->direction();
isFaceVisible = sideNorm.dot(cvf::Vec3f(camToSide)) > 0.0;
}
if (isFaceVisible)
{
m_gridBoxModel->addPart(m_gridBoxFaceParts[i].p());
faceVisibility[i] = true;
}
}
std::vector<bool> edgeVisibility(12, false);
computeEdgeVisibility(faceVisibility, edgeVisibility);
CVF_ASSERT(m_gridBoxLegendParts.size() == (NEG_X_NEG_Y + 1)*2);
for (size_t i = POS_Z_POS_X; i <= NEG_X_NEG_Y; i++)
{
if (edgeVisibility[i])
{
// We have two parts for each edge - line and text
m_gridBoxModel->addPart(m_gridBoxLegendParts[2 * i].p());
m_gridBoxModel->addPart(m_gridBoxLegendParts[2 * i + 1].p());
}
}
m_gridBoxModel->updateBoundingBoxesRecursive();
}