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Added corners(), CORNER_OFFSETS
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Revar Desmera
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9736ec48f5
commit
d765450cc3
2 changed files with 163 additions and 1 deletions
162
edges.scad
162
edges.scad
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@ -33,6 +33,22 @@
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// cuboid(size=size,chamfer=chamfer,edges=edges);
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// fwd(size/2) text3d(lbl2, size=txtsize);
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// }
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// module corner_cube(size=20, txtsize=3, corners="ALL") {
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// corner_set = _corner_set(corners);
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// echo(corners=corners, corner_set=corner_set);
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// lbl = is_string(corners)? [str("\"",corners,"\"")] : concat(
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// corners.z>0? ["TOP"] : corners.z<0? ["BTM"] : [],
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// corners.y>0? ["BACK"] : corners.y<0? ["FWD"] : [],
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// corners.x>0? ["RIGHT"] : corners.x<0? ["LEFT"] : []
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// );
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// lbl2 = [for (i=idx(lbl)) i<len(lbl)-1? str(lbl[i],"+") : lbl[i]];
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// for (i=[0:7]) if (corner_set[i]>0)
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// translate(CORNER_OFFSETS[i]*size/2)
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// color("red")
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// cube(1, center=true);
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// fwd(size/2) text3d(lbl2, size=txtsize);
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// color("yellow",0.7) cuboid(size=size);
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// }
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// Section: Sets of Edges
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@ -225,6 +241,152 @@ EDGE_OFFSETS = [ // Array of XYZ offsets to the center of each edge.
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];
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// Section: Corner Sets
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// Constants for specifying corners.
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CORNERS_NONE = [0,0,0,0,0,0,0,0]; // No corners.
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CORNERS_ALL = [1,1,1,1,1,1,1,1]; // All corners.
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// Section: Corner Helpers
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// Function: is_corner_array()
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// Usage:
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// is_corner_array(v)
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// Description:
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// Returns true if the given value has the form of a corner array.
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function is_corner_array(v) = is_vector(v) && len(v)==8 && all([for (x=v) x==1||x==0]);
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// Function: normalize_corners()
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// Usage:
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// normalize_corners(v);
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// Description:
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// Normalizes all values in a corner array to be `1`, if it was originally greater than `0`,
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// or `0`, if it was originally less than or equal to `0`.
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function normalize_corners(v) = [for (x=v) x>0? 1 : 0];
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function _corner_set(v) =
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is_corner_array(v)? v : [
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for (i=[0:7]) let(
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v2 = CORNER_OFFSETS[i]
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) (
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is_string(v)? (
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v=="ALL"? true : // Return all corners.
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v=="NONE"? false : // Return no corners.
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let(valid_values = ["ALL", "NONE"])
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assert(
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in_list(v, valid_values),
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str(v, " must be a vector, corner array, or one of ", valid_values)
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) v
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) :
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echo("A", v=v, v2=v2, [for (i=[0:2]) !v[i] || (v[i]==v2[i])])
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all([for (i=[0:2]) !v[i] || (v[i]==v2[i])])
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)? 1 : 0
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];
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// Function: corners()
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// Usage:
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// corners(v)
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// corners(v, except)
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// Description:
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// Takes a list of corner set descriptors, and returns a normalized corners array
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// that represents all those given corners. If the `except` argument is given
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// a list of corner set descriptors, then all those corners will be removed
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// from the returned corners array. If either argument only has a single corner
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// set descriptor, you do not have to pass it in a list.
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// Each corner set descriptor can be any of:
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// - A vector pointing towards an edge indicating both corners at the ends of that edge.
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// - A vector pointing towards a face, indicating all the corners of that face.
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// - A vector pointing towards a corner, indicating just that corner.
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// - The string `"ALL"`, indicating all corners.
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// - The string `"NONE"`, indicating no corners at all.
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// - A raw corners array, where each corner is represented by a 1 or a 0. The corner ordering is:
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// ```
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// [X-Y-Z-, X+Y-Z-, X-Y+Z-, X+Y+Z-, X-Y-Z+, X+Y-Z+, X-Y+Z+, X+Y+Z+]
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// ```
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// Figure(3DBig): Edge Vectors
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// ydistribute(55) {
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// xdistribute(35) {
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// corner_cube(corners=BOT+RIGHT);
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// corner_cube(corners=BOT+BACK);
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// corner_cube(corners=BOT+LEFT);
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// corner_cube(corners=BOT+FRONT);
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// }
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// xdistribute(35) {
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// corner_cube(corners=FWD+RIGHT);
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// corner_cube(corners=BACK+RIGHT);
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// corner_cube(corners=BACK+LEFT);
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// corner_cube(corners=FWD+LEFT);
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// }
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// xdistribute(35) {
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// corner_cube(corners=TOP+RIGHT);
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// corner_cube(corners=TOP+BACK);
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// corner_cube(corners=TOP+LEFT);
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// corner_cube(corners=TOP+FRONT);
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// }
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// }
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// Figure(3DBig): Corner Vector Edge Sets
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// ydistribute(55) {
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// xdistribute(35) {
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// corner_cube(corners=FRONT+LEFT+TOP);
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// corner_cube(corners=FRONT+RIGHT+TOP);
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// corner_cube(corners=FRONT+LEFT+BOT);
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// corner_cube(corners=FRONT+RIGHT+BOT);
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// }
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// xdistribute(35) {
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// corner_cube(corners=TOP+LEFT+BACK);
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// corner_cube(corners=TOP+RIGHT+BACK);
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// corner_cube(corners=BOT+LEFT+BACK);
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// corner_cube(corners=BOT+RIGHT+BACK);
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// }
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// }
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// Figure(3D): Face Vector Edge Sets
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// ydistribute(55) {
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// xdistribute(35) {
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// corner_cube(corners=LEFT);
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// corner_cube(corners=FRONT);
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// corner_cube(corners=RIGHT);
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// }
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// xdistribute(35) {
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// corner_cube(corners=TOP);
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// corner_cube(corners=BACK);
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// corner_cube(corners=BOTTOM);
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// }
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// }
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// Figure(3D): Named Edge Sets
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// xdistribute(35) {
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// corner_cube(corners="ALL");
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// corner_cube(corners="NONE");
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// }
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// Example: Just the front-top-right corner
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// corners(FRONT+TOP+RIGHT)
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// Example: All corners surrounding either the front or top faces
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// corners([FRONT,TOP])
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// Example: All corners around the bottom face, except any that are also on the front
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// corners(BTM, except=FRONT)
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// Example: All corners except those around the bottom face.
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// corners("ALL", except=BOTTOM)
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// Example: All corners around the bottom or front faces, except those on the bottom-front edge.
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// corners([BOTTOM,FRONT], except=BOTTOM+FRONT)
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function corners(v, except=[]) =
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(is_string(v) || is_corner_array(v))? corners([v], except=except) :
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(is_string(except) || is_corner_array(except))? corners(v, except=[except]) :
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except==[]? normalize_corners(sum([for (x=v) _corner_set(x)])) :
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normalize_corners(
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normalize_corners(sum([for (x=v) _corner_set(x)])) -
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sum([for (x=except) _corner_set(x)])
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);
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CORNER_OFFSETS = [ // Array of XYZ offsets to each corner.
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[-1,-1,-1], [ 1,-1,-1], [-1, 1,-1], [ 1, 1,-1],
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[-1,-1, 1], [ 1,-1, 1], [-1, 1, 1], [ 1, 1, 1]
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];
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// Function: corner_edge_count()
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// Description: Counts how many given edges intersect at a specific corner.
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// Arguments:
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@ -8,7 +8,7 @@
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//////////////////////////////////////////////////////////////////////
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BOSL_VERSION = [2,0,121];
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BOSL_VERSION = [2,0,122];
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// Section: BOSL Library Version Functions
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