Fin ellipse extruding
This commit is contained in:
parent
290e9efbaa
commit
99352f32ce
@ -2,65 +2,11 @@
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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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"base_extra_thickness": "80",
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"base_tickness": "9",
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"draw_fin": "false",
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"draw_profile": "true",
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"fin_back_angle": "20",
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"fin_back_height": "30",
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"fin_back_strength": "30",
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"fin_back_widthdraw": "20",
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"fin_back_withraw": "20",
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"fin_base": "200",
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"fin_counter_angle": "30",
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"fin_counter_strength": "20",
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"fin_end_angle": "110",
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"fin_end_strength": "30",
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"fin_height": "250",
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"fin_start_angle": "70",
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"fin_sweep": "25",
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"fin_thickness": "5",
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"fin_top_withdraw": "30",
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"fin_width": "240",
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"fin_width_tip": "5",
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"parts": "all",
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"scale_factor": "1",
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"show_debug_layers": "false"
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},
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"New set 2": {
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"$fn": "32",
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"base_extra_thickness": "80",
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"base_tickness": "8",
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"draw_fin": "false",
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"draw_profile": "true",
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"fin_back_angle": "20",
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"fin_back_height": "30",
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"fin_back_strength": "30",
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"fin_back_widthdraw": "20",
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"fin_back_withraw": "20",
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"fin_base": "120",
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"fin_counter_angle": "30",
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"fin_counter_strength": "20",
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"fin_end_angle": "110",
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"fin_end_strength": "30",
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"fin_height": "61",
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"fin_start_angle": "70",
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"fin_sweep": "25",
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"fin_thickness": "8",
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"fin_top_withdraw": "30",
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"fin_width": "240",
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"fin_width_tip": "5",
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"parts": "all",
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"scale_factor": "1",
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"show_debug_layers": "false"
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},
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"New set 3": {
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"$fn": "32",
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"base_extra_thickness": "80",
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"$fn": "64",
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"base_extra_thickness": "20",
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"base_tickness": "8",
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"draw_fin": "true",
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"draw_profile": "true",
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"draw_profile": "false",
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"fin_back_angle": "20",
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"fin_back_height": "30",
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"fin_back_strength": "30",
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@ -83,6 +29,64 @@
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"parts": "all",
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"scale_factor": "1",
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"show_debug_layers": "true"
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},
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"New set 2": {
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"$fn": "64",
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"base_extra_thickness": "20",
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"base_tickness": "8",
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"draw_fin": "false",
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"draw_profile": "false",
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"fin_back_angle": "20",
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"fin_back_height": "30",
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"fin_back_strength": "30",
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"fin_back_widthdraw": "20",
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"fin_back_withraw": "20",
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"fin_base": "114",
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"fin_counter_angle": "30",
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"fin_counter_strength": "10",
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"fin_edge_angle": "30",
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"fin_edge_strength": "30",
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"fin_end_angle": "110",
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"fin_end_strength": "30",
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"fin_height": "51",
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"fin_start_angle": "60",
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"fin_sweep": "25",
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"fin_thickness": "8",
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"fin_top_withdraw": "10",
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"fin_width": "120",
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"fin_width_tip": "5",
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"parts": "all",
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"scale_factor": "1",
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"show_debug_layers": "false"
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},
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"New set 3": {
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"$fn": "64",
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"base_extra_thickness": "20",
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"base_tickness": "8",
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"draw_fin": "false",
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"draw_profile": "true",
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"fin_back_angle": "20",
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"fin_back_height": "30",
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"fin_back_strength": "30",
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"fin_back_widthdraw": "20",
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"fin_back_withraw": "20",
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"fin_base": "114",
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"fin_counter_angle": "30",
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"fin_counter_strength": "10",
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"fin_edge_angle": "30",
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"fin_edge_strength": "30",
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"fin_end_angle": "110",
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"fin_end_strength": "30",
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"fin_height": "51",
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"fin_start_angle": "60",
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"fin_sweep": "25",
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"fin_thickness": "8",
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"fin_top_withdraw": "10",
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"fin_width": "120",
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"fin_width_tip": "5",
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"parts": "all",
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"scale_factor": "1",
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"show_debug_layers": "false"
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}
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}
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}
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@ -4,6 +4,10 @@ include <BOSL2/beziers.scad>;
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include <BOSL2/rounding.scad>;
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include <BOSL2/skin.scad>;
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include <DotScad/src/bend.scad>;
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include <DotScad/src/bend_extrude.scad>;
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include <DotScad/src/ellipse_extrude.scad>;
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include <DotScad/src/rounded_extrude.scad>;
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/************************************************/
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/* Parameters */
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@ -44,7 +48,7 @@ fin_back_strength=30;
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/* [Base Specs] */
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base_tickness=8;
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base_extra_thickness=80;
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base_extra_thickness=20;
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/* [Debugging] */
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@ -151,6 +155,170 @@ control_points = [
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];
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top_point = [0,fin_height];
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p1 = [fin_thickness/2,0];
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p2 = [-fin_thickness/2,0];
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vertical_shape=[
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p1,
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handle(p1,90,fin_height/1.2),
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// *****************
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// TOP Point
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// *****************
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handle(top_point,140 /*degree*/,0),
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top_point,
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handle(top_point,140 /*degree*/,0),
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// *****************
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// END POINT
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// *****************
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handle(p2,90,fin_height/1.2),
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p2
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];
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lpoint=[fin_width/2,0];
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rpoint=[-lpoint[0],0];
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top_strength=fin_width/8;
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top_shape=[
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// Right
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rpoint,
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handle(rpoint,150,top_strength),
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// Left
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handle(lpoint,40,top_strength),
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lpoint,
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handle(lpoint,-40,top_strength),
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// Final
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handle(rpoint,-150,top_strength),
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rpoint
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];
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// Calculate points along the Bézier curve.
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// 'N' here determines the number of points to calculate.
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//N = 50; // Number of points to generate
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profile_path = asCurve(control_points);
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vertical_path = asCurve(vertical_shape);
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top_path = asCurve(top_shape);
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echo ("vertical_path",vertical_path);
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left(50) polygon(vertical_path);
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left(180) polygon(profile_path);
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//left(280) polygon(top_path);
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left(100) back(70)
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resize([fin_width,fin_thickness])circle(d=fin_width);
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//showDebugPath(top_path);
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function asCurve(points) = bezier_curve(points,N=3,splinesteps=128);
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/*
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bezier = bezier_points(control_points, N=50);
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// Convert the Bézier curve points to a 3D path starting at z=0
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path3d_bezier = path3d(bezier);
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*/
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intersection(){
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if (true) down(fin_thickness) linear_extrude(height=fin_thickness*2) {
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polygon(profile_path);
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};
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left(0) yrot(90) linear_extrude(height=fin_width) {
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polygon(vertical_path);
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};
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if (true) right(fin_width/2) xrot(-90) linear_extrude(height=fin_height) {
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resize([fin_width,fin_thickness])circle(d=fin_width);
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};
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}
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color("Red") left(300) intersection(){
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left(0) yrot(90)
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//bend(size = [fin_width*3, fin_height*2, fin_tickness*4], angle = 270)
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linear_extrude(height=fin_width)
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polygon(vertical_path);
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if (true) right(fin_width/2) xrot(-90) linear_extrude(height=fin_height) {
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resize([fin_width,fin_thickness])circle(d=fin_width);
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};
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}
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color("green") left(300) back(70)
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left(0) yrot(90)
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//bend(size = [fin_width*3, fin_height*2, fin_tickness*4], angle = 30)
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linear_extrude(height=fin_width)
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//bend_extrude(size = [100, 100], thickness = 1, angle = 270)
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polygon(vertical_path);
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//text("A");
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;
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path = [for(theta=[-180:5:180]) [theta/10, 10*sin(theta)]];
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// https://github.com/BelfrySCAD/BOSL2/wiki/skin.scad#functionmodule-path_sweep
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color("Yellow") path_sweep(
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vertical_path,
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get_n_items(profile_path,80),
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spin=0
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);
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semi_minor_axis = 2;
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echo ("PATH LENGTH",len(profile_path));
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echo ("PATH LENGTH2",len(subdivide_path(profile_path,400)));
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echo ("PATH LENGTH3",len(resample_path(profile_path,500)));
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print_path_points(profile_path);
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print_path_points(translate_path(profile_path,-fin_width/2,0));
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if (true) color("Brown") left(200) back(155) down(fin_thickness)
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ellipse_extrude(
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//semi_minor_axis,
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fin_thickness/2,
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//height = 16,
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center=true,
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//convexity=40
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//angle=90
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)
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//linear_extrude(height=fin_thickness*2)
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//linear_extrude(height=60)
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polygon(
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translate_path(
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resample_path(profile_path,200),
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-fin_width/2,
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0
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)
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);
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circle_r = 10;
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round_r = 5;
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right(200) rounded_extrude(circle_r * 2, round_r)
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circle(circle_r);
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right(300) rounded_extrude(circle_r * 2, round_r)
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polygon(resample_path(profile_path,200));
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color("red")move_copies(profile_path) circle($fn=16);
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function get_n_items(arr, n) =
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[for (i = [0 : n - 1]) if (i < len(arr)) arr[i]];
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function handle(point,angle,strength) = [
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//point[0] + adj_ang_to_opp(strength,angle) /** xAngleFactor(angle)*/,
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@ -185,28 +353,40 @@ function remove_last(arr) = select(arr, 0, len(arr) - 2);
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// Surf Fin profile
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fin_profile = pathProfile( control_points );
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vertical_profile = pathProfile(vertical_shape);
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// ****************
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// * Slicing *
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// ****************
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layer_0 = pathProcess(addBase(fin_profile)); // Master layer with base
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layer_1 = pathProcess(offset(layer_0,delta=-5,chamfer=true));
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layer_2 = pathProcess(offset(layer_1,delta=-7,chamfer=false));
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layer_3 = pathProcess(offset(layer_2,delta=-5,chamfer=false));
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layer_4 = pathProcess(offset(layer_3,delta=-5,chamfer=false));
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layer_1 = contract(layer_0,-5);
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layer_2 = contract(layer_1,-4);
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layer_3 = contract(layer_2,-4);
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layer_4 = contract(layer_3,-2);
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//echo ("layer_2",layer_2);
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//echo ("layer_3",layer_3);
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//layers = [layer_0,layer_1,layer_2,layer_3,layer_4];
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layers = [layer_0,layer_1,layer_2,layer_3];
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function pathProcess(path) = subdivide_path(path,200);
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function pathProcess3(path) = path;
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function pathProcess2(path) = subdivide_path(path,100);
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function pathProcess(path) = path;
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function contract2(path,delta) = pathProcess(offset(path,r=delta,chamfer=true));
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function contract(path,delta) =
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pathProcess(
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offset(
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deduplicate(path),
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delta=delta,
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chamfer=false,
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same_length=true
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)
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);
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@ -221,11 +401,13 @@ if (draw_fin) {
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module build() {
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union(){
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//cube([50,50,90]);
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difference(){
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union() {
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if (parts != "bottom") buildFinSide([layer_0,layer_1,layer_2],base_tickness/2);
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if (parts != "top") zflip() buildFinSide([layer_0,layer_1,layer_2],base_tickness/2);
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if (parts != "bottom")
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buildFinSide([layer_0,layer_1,layer_2],fin_thickness/2);
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if (parts != "top")
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zflip()
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buildFinSide([layer_0,layer_1,layer_2],fin_thickness/2);
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}
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color("Red") cube([fin_base+20,base_extra_thickness+20,base_tickness+20],anchor=LEFT+BACK);
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}
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@ -246,21 +428,34 @@ module subtracted(anchor) {
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*/
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module buildFinSide(layers,thickness,flip=false) {
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color("Grey")
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skin(layers,slices=0,z=layerHeights(len(layers),thickness));
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skin(
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layers,
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slices=0,
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//method="reindex",
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z=layerHeights(len(layers),thickness),
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//caps=true,
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sampling="segment",
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//closed=false
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//convexity=40
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//atype="intersect"
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cp="box"
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);
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}
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echo ("layerHeights(3,thickness):",layerHeights(3,base_tickness/2));
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if (show_debug_layers) {
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left(300) {
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left(130) {
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showDebugPath(layer_0);
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showDebugPath(layer_1);
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showDebugPath(layer_2);
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assert(is_path(layer_3),"Layer 3 is not a path");
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showDebugPath(layer_3);
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showDebugPath(layer_4);
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//showDebugPath(layer_4);
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}
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left(230)
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showDebugPath(vertical_profile);
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//showDebugPath(layer_3);
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}
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@ -283,7 +478,7 @@ module showDebugPath(path) {
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assert(is_path(path),"Path to show is not a path");
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assert(is_path_simple(path),"Path is not simple");
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rainbow(split_path_at_self_crossings(path))
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stroke($item, closed=false, width=1);
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stroke($item, closed=false, width=0.2);
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}
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@ -334,11 +529,43 @@ function layerHeights(n, fin_thickness) =
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)
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[ for (i = [0 : n-1]) i * layer_height ];
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/**
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* Function to translate a path manually along X and Y
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*/
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function translate_path(path, dx, dy) =
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[for (p = path) [p[0] + dx, p[1] + dy]];
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// Function to print points of a path
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module print_path_points(path) {
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for (i = [0:len(path)-1]) {
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echo(str("\t Point ", i, ": [", path[i][0], ", ", path[i][1], "]"));
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}
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}
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echo ("**********************");
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echo ("* Configuration *");
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echo ("**********************");
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echo ("Layers count" ,len(layers));
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echo ("Base thickness" ,str(base_tickness," mm"));
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echo ("Layers heights" ,layerHeights(len(layers),base_tickness/2));
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echo ("Layers heights" ,layerHeights(len(layers),fin_thickness/2));
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