Source cleanup and comments
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10
SurfFins.json
Normal file
10
SurfFins.json
Normal file
@ -0,0 +1,10 @@
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{
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"fileFormatVersion": "1",
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"parameterSets": {
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"New set 1": {
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"$fn": "32",
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"draw_profile": "true",
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"show_debug_layers": "false"
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}
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}
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}
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231
SurfFins.scad
231
SurfFins.scad
@ -5,6 +5,11 @@ include <BOSL2/rounding.scad>;
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include <BOSL2/skin.scad>;
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/************************************************/
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/* Parameters */
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/************************************************/
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/* [Fin Specs] */
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fin_height = 250; // 10 inches in mm
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fin_width = 240; // Width at the base in mm
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@ -20,8 +25,6 @@ fin_counter_strength = 20; // Length [Point 2]
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fin_base = 200; // Width at the base in mm
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fin_width_tip = 5; // Width at the tip in mm
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fin_thickness = 5; // Thickness of the fin in mm
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@ -34,118 +37,57 @@ fin_back_widthdraw = 20; // Percent height
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fin_back_angle = 20; // back angle
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fin_back_strength=30;
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/* [Base Specs] */
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base_tickness=9.2;
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base_extra_thickness=40;
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base_extra_thickness=80;
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/* [Debugging] */
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//Showing all layers
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show_debug_layers = false;
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// Draw master profile
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draw_profile = false;
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/************************************************/
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$fn=32;
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pt1_x = adj_ang_to_opp(fin_height,fin_sweep)+fin_base/2;
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pt1_y = fin_height;
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$fn=32;
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control_points_new = [
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// *****************
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// Under POINT
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// *****************
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[0,-13], //Point init
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[0,0], // Handle init point
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// [0,0],
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//[0,-13],
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//[0,-13],
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// *****************
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// Init POINT
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// *****************
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//[opp_ang_to_adj(fin_height/3,fin_start_angle),-fin_height/3],
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//[-50,0], // Point 0
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//[0,50], // Start handle Init
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[0,-13], // Start handle Init
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[0,0], // Init point
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[0,30], //
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[0,50],
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//[0,0],
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//[0,0],
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[opp_ang_to_adj(fin_height/3,fin_start_angle) , fin_height/3], //Point init
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// Handle 0
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// *****************
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// TOP
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// *****************
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[pt1_x-100,pt1_y], // Handle 1 ()
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[pt1_x,pt1_y], // Point 1
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[pt1_x+30,pt1_y], // Handle 1 (End)
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// *****************
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// COUNTER POINT
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// *****************
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handleStart(fin_width,fin_top_withdraw,fin_counter_angle,fin_counter_strength),
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counterTop(fin_width,fin_top_withdraw), // [250,220], // Point 2
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handleEnd(fin_width,fin_top_withdraw,fin_counter_angle,fin_counter_strength),
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// *****************
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// BACK POINT
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// *****************
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handle(backPoint(),fin_back_angle,fin_back_strength),
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backPoint(),
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handle(backPoint(),-fin_back_angle,fin_back_strength),
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// *****************
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// END POINT
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// *****************
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endHandle(fin_end_angle), // End Handle
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[fin_base,0], // End point
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[fin_base,0],
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// [fin_base,-20],
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// *****************
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// BASE LAST
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// *****************
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/*
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[fin_base,-13],
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[fin_base,-13],
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[fin_base,-13]
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*/
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];
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control_points = [
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// *****************
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// INITIAL POINT
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// *****************
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[0,0], // Point 0
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[opp_ang_to_adj(fin_height/3,fin_start_angle),fin_height/3], // Handle 0
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[pt1_x-100,pt1_y], // Handle 1 ()
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//[220,250], // Point 1
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// *****************
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// TOP POINT
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// *****************
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[pt1_x-100,pt1_y], // Handle 1 (Start)
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[pt1_x,pt1_y], // Point 1
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[pt1_x+30,pt1_y], // Handle 1 (End)
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// *****************
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// COUNTER POINT
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// *****************
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handleStart(fin_width,fin_top_withdraw,fin_counter_angle,fin_counter_strength),
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counterTop(fin_width,fin_top_withdraw), // [250,220], // Point 2
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handleEnd(fin_width,fin_top_withdraw,fin_counter_angle,fin_counter_strength),
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// *****************
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// BACK POINT
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// *****************
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//[165,100], // Handle 2 (Start)
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handle(backPoint(),fin_back_angle,fin_back_strength),
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//[155,80], // Point 2
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backPoint(),
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handle(backPoint(),-fin_back_angle,fin_back_strength),
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// [145,60], // Handle 2 (End)
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//[250,230],
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// *****************
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// END POINT
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// *****************
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@ -154,12 +96,9 @@ control_points = [
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];
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function counterTop(x,withdraw) = [x, x-withdraw ];
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function handleStart(x,withdraw,angle,strength) = [x+adj_ang_to_opp(strength,angle), x-withdraw +strength];
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function handleEnd(x,withdraw,angle,strength) = [x-adj_ang_to_opp(strength,angle), x-withdraw -strength];
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function endHandle(angle)=
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angle < 90 ?
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[fin_base + adj_ang_to_opp(fin_end_strength,90-angle),fin_end_strength]
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@ -171,47 +110,39 @@ function handle(point,angle,strength) = [point[0] + adj_ang_to_opp(strength,angl
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function decrease_y(points, percentage) = [ for (p = points) [p[0], p[1] * (1 - percentage/100)]];
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/**
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* Draw Profile
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*
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*/
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module drawProfile( points,debug = true ){
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pt = [100,0];
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pos = bezpath_closest_point(points, pt);
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xy = bezpath_points(points,pos[0],pos[1]);
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debug_bezier(points, N=3);
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//color("red") translate(pt) sphere(r=6);
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//color("blue") translate(xy) sphere(r=6);
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}
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// Draw fin profile
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drawProfile( control_points, true );
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function pathProfile(points) = bezpath_curve(points,N=3);
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function remove_last(arr) = select(arr, 0, len(arr) - 2);
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//path = bezpath_curve(control_points,N=3);
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pathProfile = pathProfile( control_points );
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//base = square([fin_base,13 ], center=true);
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base = [[0,0],[fin_base,0],[fin_base,-base_extra_thickness],[0,-base_extra_thickness]];
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path = concat(pathProfile, base);
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//base = [[0,0],[fin_base,0],[fin_base,-base_extra_thickness],[0,-base_extra_thickness]];
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//base = [/*[fin_base,0],*/[fin_base,-base_extra_thickness],[0,-base_extra_thickness],[0,0]];
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//base = [/*[fin_base,0],*/[fin_base,-base_extra_thickness],[0,-base_extra_thickness]];
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//up (40) polygon(path,);
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//up (40) color("Red") polygon(base);
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up (40) color("Red") polygon(path);
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//path = concat(remove_last_item(pathProfile), base);
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//path = concat(pathProfile, base);
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path = addBase(path);
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//stroke(path,dots=true,dots_color="red");
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//up (0) polygon(path);
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if (false) {
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path2 = offset(path,delta=-10,chamfer=true);
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path3 = offset(path2,delta=-10,chamfer=true);
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up (80) color("Green") polygon(path2);
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//path2[0][1] = 0;
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/*
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path2b = concat(
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[[0, 0]], // New first point
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[for (i = [1:len(path2)-1]) path2[i]] // Rest of the points unchanged
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@ -222,6 +153,7 @@ path3b = concat(
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);
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echo("path2",path2);
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echo("path2b",path2b);
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*/
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//path2 = bezpath_curve(decrease_y(control_points,10),N=3);
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@ -255,3 +187,70 @@ path_extrude2d(path, caps=true, closed=false)
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move_copies([[-3.5,1.5],[0.0,3.0],[3.5,1.5]])
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circle(r=1.5);
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*/
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}
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if (show_debug_layers) {
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showDebugPath(path);
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}
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if (draw_profile) {
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// Draw fin profile
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drawProfile( control_points, true );
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}
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/**
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* Displays debug information for a path by visualizing its self-crossings.
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*
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* @param path - The input path to analyze for self-crossings.
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*
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* This module:
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* - Splits the path at points where it intersects itself.
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* - Renders each segment of the split path with different colors for easy identification.
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*/
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module showDebugPath(path) {
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assert(is_path_simple(path),"Path is not simple");
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paths = split_path_at_self_crossings(path);
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//left(100)
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rainbow(paths)
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stroke($item, closed=false, width=1);
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}
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/**
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* Draws a profile based on Bezier path points with optional debug visualization.
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*
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* @param points - Array of points defining the Bezier path.
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* @param debug - Boolean flag to enable/disable debug visualization. Defaults to true.
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*
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* This module:
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* - Calculates the closest point on the Bezier path to a fixed point.
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* - Draws the Bezier path with debug information if debug is true.
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* - Optionally shows spheres at specific points for debugging (currently commented out).
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*/
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module drawProfile( points,debug = true ){
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pt = [100,0];
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pos = bezpath_closest_point(points, pt);
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xy = bezpath_points(points,pos[0],pos[1]);
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debug_bezier(points, N=3);
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//color("red") translate(pt) sphere(r=6);
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//color("blue") translate(xy) sphere(r=6);
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}
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/**
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* Adds a base to the given path by extending it with additional points.
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*
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* @param path - The original path to which the base will be added.
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* @return A new path with an added base.
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*
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* This function concatenates:
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* - The original path (`pathProfile`).
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* - A point `fin_base` which might represent the start or end of the base.
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* - Points for additional thickness (`-base_extra_thickness`) at both ends of the base.
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*/
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function addBase(path) = concat(pathProfile,[fin_base,-base_extra_thickness],[0,-base_extra_thickness]);
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