[WIP] add additional ear shaping methods
v2: semi-circle remapped polyhedron v3: bezier curve polyhedron
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djerun
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1 changed files with 114 additions and 7 deletions
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@ -1,9 +1,58 @@
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include <globals.scad>;
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include <globals.scad>;
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include <primitives.scad>;
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use <headband.scad>;
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use <headband.scad>;
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use <chamfer.scad>;
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use <chamfer.scad>;
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module catear(height, thickness, fractal=0, side_len=30, bend_factor=0.5, stretch_factor=1.2, debug=false, chamfer=CHAMFER, chamfer_shape=CHAMFER_SHAPE, details=true, end_caps=true) {
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/**
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* unsupported parameters: chamfer, chamfer_shape, details, end_caps
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*/
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module catear_v3(height, thickness, fractal=0, side_len=30, bend_factor=0.15, stretch_factor=1.2, debug=false, chamfer=CHAMFER, chamfer_shape=CHAMFER_SHAPE, details=true, end_caps=true, skew=2.0) {
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S = side_len;
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s = S/2;
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sf = stretch_factor;
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bf = bend_factor;
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mn = 1.16; // magic number
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f=skew*S*0.2;
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a = skew*10;
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R = [[cos(a), -sin(a), 0],
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[sin(a), cos(a), 0],
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[ 0, 0, 1]];
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A = [ s , 0, 0];
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B = [ S*bf, S*sf*mn, 0] * R;
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C = [-S*bf, S*sf*mn, 0] * R;
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D = [-s , 0, 0];
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if (debug) translate([0, 0, height]) rotate(90) bezier_curve_debug([A, B, C, D]);
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}
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/**
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* unsupported parameters: debug, chamfer, chamfer_shape, details, end_caps
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*/
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module catear_v2(height, thickness, fractal=0, side_len=30, bend_factor=0.15, stretch_factor=1.2, debug=false, chamfer=CHAMFER, chamfer_shape=CHAMFER_SHAPE, details=true, end_caps=true, skew=2.0) {
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r=side_len/2;
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T=side_len+thickness;
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S=side_len-thickness;
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x_stretch = function (x) pow(x, abs(skew));
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y_stretch = function (y) pow(y, 2.0);
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E=1.6*stretch_factor;
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a=y_stretch(r)+thickness/2;
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b=y_stretch(r)-thickness/2;
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e=(E*a-thickness)/b;
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echo("E",E,"e",e, "a", a, "b", b, "c", thickness);
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outer_remap = function (p) [scalc(x_stretch, p.x, T/2, -T/2)*sign(skew), scalc(y_stretch, p.y, 0, T/2)*E, p.z];
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inner_remap = function (p) [scalc(x_stretch, p.x, S/2, -S/2)*sign(skew), scalc(y_stretch, p.y, 0, T/2)*e, p.z];
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or = function (p) [p.x, 2*p.y, p.z];
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arc(0.5, r, thickness, height, outer_remap=outer_remap, inner_remap=inner_remap);
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}
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/**
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* unsupported parameters: skew
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*/
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module catear_v1(height, thickness, fractal=0, side_len=30, bend_factor=0.15, stretch_factor=1.2, debug=false, chamfer=CHAMFER, chamfer_shape=CHAMFER_SHAPE, details=true, end_caps=true, skew=2.0) {
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$A=[0, side_len/2];
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$A=[0, side_len/2];
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$B=[0,-side_len/2];
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$B=[0,-side_len/2];
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$C=[-(side_len/2/sin(120))*1.5*stretch_factor, 0];
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$C=[-(side_len/2/sin(120))*1.5*stretch_factor, 0];
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@ -76,7 +125,7 @@ module catear(height, thickness, fractal=0, side_len=30, bend_factor=0.5, stretc
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}
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}
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}
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}
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module catear_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNESS, part=PART, stretch_len=STRETCH_LEN, tip_len=TIP_LEN, tip_bend=TIP_BEND, ear_scale=1.5, ear_bend_factor=0.15, ear_stretch_factor=1.2, ear_angle=42, chamfer=CHAMFER, chamfer_shape=CHAMFER_SHAPE, with_rake=true, details=true) {
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module catear_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNESS, part=PART, stretch_len=STRETCH_LEN, tip_len=TIP_LEN, tip_bend=TIP_BEND, ear_scale=1.5, ear_bend_factor=0.15, ear_stretch_factor=1.2, ear_angle=42, chamfer=CHAMFER, chamfer_shape=CHAMFER_SHAPE, with_rake=true, details=true, ear_skew=2.0) {
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$a=size/2*ear_scale;
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$a=size/2*ear_scale;
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$delta=2*(acos($a/(size*2))-90);
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$delta=2*(acos($a/(size*2))-90);
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@ -84,7 +133,7 @@ module catear_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNES
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union() {
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union() {
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rotate( ear_angle, [0, 0, 1]) {
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rotate( ear_angle, [0, 0, 1]) {
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translate([-ear_offset, 0, 0]) catear(
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translate([-ear_offset, 0, 0]) catear_v3(
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debug=debug,
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debug=debug,
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height=height,
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height=height,
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thickness=thickness,
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thickness=thickness,
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@ -93,11 +142,40 @@ module catear_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNES
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stretch_factor=ear_stretch_factor,
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stretch_factor=ear_stretch_factor,
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chamfer=chamfer,
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chamfer=chamfer,
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chamfer_shape=chamfer_shape,
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chamfer_shape=chamfer_shape,
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details=details
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details=details,
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skew=ear_skew
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);
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}
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rotate( ear_angle, [0, 0, 1]) {
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translate([-ear_offset, 0, -2*height]) catear_v2(
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debug=debug,
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height=height,
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thickness=thickness,
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side_len=size/2*ear_scale,
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bend_factor=ear_bend_factor,
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stretch_factor=ear_stretch_factor,
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chamfer=chamfer,
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chamfer_shape=chamfer_shape,
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details=details,
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skew=ear_skew
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);
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}
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rotate( ear_angle, [0, 0, 1]) {
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translate([-ear_offset, 0, -height]) catear_v1(
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debug=debug,
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height=height,
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thickness=thickness,
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side_len=size/2*ear_scale,
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bend_factor=ear_bend_factor,
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stretch_factor=ear_stretch_factor,
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chamfer=chamfer,
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chamfer_shape=chamfer_shape,
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details=details,
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skew=ear_skew
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);
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);
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}
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}
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rotate(-ear_angle, [0, 0, 1]) {
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rotate(-ear_angle, [0, 0, 1]) {
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translate([-ear_offset, 0, 0]) catear(
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translate([-ear_offset, 0, 0]) catear_v3(
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debug=false,
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debug=false,
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height=height,
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height=height,
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thickness=thickness,
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thickness=thickness,
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@ -106,7 +184,36 @@ module catear_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNES
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stretch_factor=ear_stretch_factor,
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stretch_factor=ear_stretch_factor,
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chamfer=chamfer,
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chamfer=chamfer,
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chamfer_shape=chamfer_shape,
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chamfer_shape=chamfer_shape,
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details=details
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details=details,
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skew=-ear_skew
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);
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}
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rotate(-ear_angle, [0, 0, 1]) {
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translate([-ear_offset, 0, -2*height]) catear_v2(
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debug=false,
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height=height,
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thickness=thickness,
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side_len=size/2*ear_scale,
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bend_factor=ear_bend_factor,
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stretch_factor=ear_stretch_factor,
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chamfer=chamfer,
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chamfer_shape=chamfer_shape,
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details=details,
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skew=-ear_skew
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);
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}
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rotate(-ear_angle, [0, 0, 1]) {
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translate([-ear_offset, 0, -height]) catear_v1(
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debug=false,
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height=height,
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thickness=thickness,
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side_len=size/2*ear_scale,
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bend_factor=ear_bend_factor,
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stretch_factor=ear_stretch_factor,
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chamfer=chamfer,
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chamfer_shape=chamfer_shape,
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details=details,
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skew=-ear_skew
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);
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);
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}
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}
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headband(
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headband(
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@ -123,4 +230,4 @@ module catear_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNES
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};
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};
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}
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}
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catear_headband();
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rotate(-90) catear_headband(ear_bend_factor=0.15, ear_skew=2, debug=true);
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