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Alex Matulich 2025-03-24 17:39:44 -07:00
parent bf75ab5f49
commit e797f0e48d
1 changed files with 4 additions and 5 deletions
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isosurface.scad
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@ -3259,7 +3259,7 @@ function _metaballs2dfield(funclist, transmatrix, bbox, pixsize, nballs) = let(
// (x*y*z^3 - 3*x^2*z^2) / np^2 + np^2,
// isovalue=[-INF,35], bounding_box=[[-32,-32,-14],[32,32,14]],
// voxel_size = 0.8, show_box=true);
// Example(3D,Med,NoAxes,VPD=47,VPT=[0,0,2]): You can specify non-cubical voxels for efficiency. This example shows the result of two identical surface functions. The figure on the left uses a `voxel_size=1`, which washes out the detail in the z direction. The figure on the right shows the same shape with `voxel_size=[0.5,1,0.2]` to give a bit more resolution in the x direction and much more resolution in the z direction. This example runs about six times faster than if we used a cubical voxel of size 0.2 to capture the detail in only one axis at the expense of unnecessary detail in other axes.
// Example(3D,Med,NoAxes,VPD=47,VPT=[0,0,2]): You can specify non-cubical voxels for efficiency. This example shows the result of two identical surface functions. The figure on the left uses `voxel_size=1`, which washes out the detail in the z direction. The figure on the right shows the same shape with `voxel_size=[0.5,1,0.2]` to give a bit more resolution in the x direction and much more resolution in the z direction. This example runs about six times faster than if we used a cubical voxel of size 0.2 to capture the detail in only one axis at the expense of unnecessary detail in other axes.
// function shape(x,y,z, r=5) =
// r / sqrt(x^2 + 0.5*(y^2 + z^2) + 0.5*r*cos(200*z));
// bbox = [[-6,-8,0], [6,8,7]];
@ -3480,10 +3480,9 @@ function _showstats_isosurface(voxsize, bbox, isoval, cubes, triangles, faces) =
// means that the list of paths may include a mixture of closed and open paths. Regardless of whether
// any of the output paths are open, all closed paths have identical first and last points so that closed and
// open paths can be distinguished. You can use {{are_ends_equal()}} to determine if a path is closed. A path
// list that includes open paths is not a region, since regions are lists of closed polygons. Duplicating the
// ends of closed paths can cause problems for some functions such as {{offset()}} which will complain about
// repeated points; to deal with this problem you can pass the closed components to {{list_unwrap()}} to remove
// the extra endpoint.
// list that includes open paths is not a region, because regions are lists of closed polygons. Duplicating the
// ends of closed paths can cause problems for functions such as {{offset()}}, which would complain about
// repeated points. You can pass a closed path to {{list_unwrap()}} to remove the extra endpoint.
// Arguments:
// f = The contour function or array.
// isovalue = a scalar giving the isovalue parameter.