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Merge pull request #1632 from amatulic/anachronist_vnf

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minor example corrections
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adrianVmariano
2025-04-15 06:47:59 -04:00
committed by GitHub
parent 8ab3d49c30 6a2fbf99ae
commit 27fd19c12a
2 changed files with 6 additions and 6 deletions
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4
beziers.scad
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@@ -1595,7 +1595,7 @@ function bezier_patch_normals(patch, u, v) =
// splinesteps = Number of segments on the border edges of the bezier surface. You can specify [USTEPS,VSTEPS]. Default: 16
// balanced = if true, then offset the bezier surface by half the specified thickness on each side. This increases execution time because two offsets must be performed. The sign of `thickness` does not matter. Default: false
// style = {{vnf_vertex_array()}} style to use. Default: "default"
// Example(3D): Because the "inside" of this bezier patch is on the underside of this view, a positive thickness extends downward from that side of the surface.
// Example(3D): In this case, a positive thickness extends downward from that side of the surface.
// patch = [
// // u=0,v=0 u=1,v=0
// [[-50,-50, 0], [-16,-50, 20], [ 16,-50, -20], [50,-50, 0]],
@@ -1615,7 +1615,7 @@ function bezier_patch_normals(patch, u, v) =
// // u=0,v=1 u=1,v=1
// ];
// vnf_polyhedron(bezier_vnf(patch));
// vnf_polyhedron(bezier_sheet(patch, 10, balanced=true));
// %vnf_polyhedron(bezier_sheet(patch, 10, balanced=true));
function bezier_sheet(patch, thickness, splinesteps=16, style="default", balanced=false) =
assert(is_bezier_patch(patch))

8
vnf.scad
View File

@@ -206,7 +206,7 @@ EMPTY_VNF = [[],[]]; // The standard empty VNF with no vertices or faces.
// apply(m, [ [rgroove[0].x,0,-z], each rgroove, [last(rgroove).x,0,-z] ])
// ], caps=true, col_wrap=true, reverse=true);
// vnf_polyhedron(vnf, convexity=8);
// Example(3D,Med,NoAxes,VPD=300): When applying a texture to a vertex array, remember that the density of the texture follows the density of the vertex array grid. Here is a sheet with a wrinkle in both x and y directions, using location data generated by {{smooth_path()}}. The bezier curves have non-uniformly distributed spline points, indicated by the red dots along each edge. This results in a non-uniform distribution of the texture tiling.
// Example(3D,Med,NoAxes,VPD=300,VPT=[48,48,0]): When applying a texture to a vertex array, remember that the density of the texture follows the density of the vertex array grid. Here is a sheet with a wrinkle in both x and y directions, using location data generated by {{smooth_path()}}. The bezier curves have non-uniformly distributed spline points, indicated by the red dots along each edge. This results in a non-uniform distribution of the texture tiling.
// include <BOSL2/rounding.scad>
//
// xprofile = smooth_path([[0,0,0], [25,0,0], [49,0,-10], [51,0,10], [75,0,0], [100,0,0]],
@@ -223,7 +223,7 @@ EMPTY_VNF = [[],[]]; // The standard empty VNF with no vertices or faces.
// for(p=xprofile) translate(p-[0,1,0]) sphere(1.5);
// for(p=yprofile) translate(p-[1,0,0]) sphere(1.5);
// }
// Example(3D,Med,NoAxes,VPD=300): By passing the spline curves into {{resample_path()}}, we can get a uniform distribution of the same number of x and y profile points, as shown by the red dots. This results in a uniform distribution of the texture tiling.
// Example(3D,Med,NoAxes,VPD=300,VPT=[48,48,0]): By passing the spline curves into {{resample_path()}}, we can get a uniform distribution of the same number of x and y profile points, as shown by the red dots. This results in a uniform distribution of the texture tiling.
// include <BOSL2/rounding.scad>
//
// xprof = smooth_path([[0,0,0], [25,0,0], [49,0,-10], [51,0,10], [75,0,0], [100,0,0]],
@@ -242,7 +242,7 @@ EMPTY_VNF = [[],[]]; // The standard empty VNF with no vertices or faces.
// for(p=xprofile) translate(p-[0,4,0]) sphere(1.5);
// for(p=yprofile) translate(p-[4,0,0]) sphere(1.5);
// }
// Example(3D,NoAxes,VPR=[66,0,24],VPD=285,VPT=[0,2,44]): This is a vase shape that cannot be constructed with rotational or linear sweeps. Using a vertex array to create a stack of polygons is the most practical way to make this and many other shapes. The cross-section is a rounded 9-pointed star that changes size and rotates back and forth as it rises in the z direction.
// Example(3D,NoAxes,VPR=[73,0,27],VPD=260,VPT=[0,0,42]): This is a vase shape that cannot be constructed with rotational or linear sweeps. Using a vertex array to create a stack of polygons is the most practical way to make this and many other shapes. The cross-section is a rounded 9-pointed star that changes size and rotates back and forth as it rises in the z direction.
// include <BOSL2/rounding.scad>
//
// vprofile =
@@ -259,7 +259,7 @@ EMPTY_VNF = [[],[]]; // The standard empty VNF with no vertices or faces.
// z)
// ];
// vnf_polyhedron(vnf_vertex_array(polystack, col_wrap=true, caps=true));
// Example(3D,NoAxes,VPR=[66,0,24],VPD=285,VPT=[0,2,44]): The previous vase shape with a pebbly texture, simply by adding `texture="dots"` to the `vnf_vertex_array()` call. Because textures are spread over grid units and not measurement units, the data points in the polygon stack should be more or less uniformly spaced. Each star-shaped cross-section has uniformly-spaced points, but the vertical profile `vprofile` in the previous example isn't uniform because the control points aren't evenly spaced. We fix this by passing this profile into `resample_path()`, which results in a uniform texture density.
// Example(3D,NoAxes,VPR=[73,0,27],VPD=260,VPT=[0,0,42]): The previous vase shape with a pebbly texture, simply by adding `texture="dots"` to the `vnf_vertex_array()` call. Because textures are spread over grid units and not measurement units, the data points in the polygon stack should be more or less uniformly spaced. Each star-shaped cross-section has uniformly-spaced points, but the vertical profile `vprofile` in the previous example isn't uniform because the control points aren't evenly spaced. We fix this by passing this profile into `resample_path()`, which results in a uniform texture density.
// include <BOSL2/rounding.scad>
//
// vprofile = resample_path(