tgt::ivec2 Flow2D::slicePosToFlowPos(const tgt::ivec2& vp, const tgt::ivec2& sliceSize,
tgt::ivec2* const error) const
{
tgt::vec2 p(static_cast<float>(vp.x % sliceSize.x) / sliceSize.x,
static_cast<float>(vp.y % sliceSize.y) / sliceSize.y);
tgt::ivec2 r = getNearestCellPos(p * static_cast<tgt::vec2>(dimensions_));
if (error != 0)
*error = (vp - flowPosToSlicePos(r, sliceSize));
return r;
}
tgt::ivec3 Flow3D::slicePosToFlowPos(const tgt::ivec2& vp, const tgt::ivec2& sliceSize,
const tgt::ivec3& components, const size_t sliceNo,
tgt::ivec2* const error) const
{
tgt::vec2 c(static_cast<float>(vp.x % sliceSize.x),
static_cast<float>(vp.y % sliceSize.y));
const int& i = components.x;
const int& j = components.y;
const int& k = components.z;
tgt::vec3 p(0, 0, 0);
p[i] = (c.x / sliceSize.x);
p[j] = (c.y / sliceSize.y);
p[k] = float(sliceNo) / dimensions_[k];
tgt::ivec3 r = getNearestVoxelPos(p * static_cast<tgt::vec3>(dimensions_));
if (error != 0)
*error = (vp - flowPosToSlicePos(r, sliceSize, components));
return r;
}
