commit 618cee124f89b2475c926a2c84c63cc278d76810
Author: Sébastien Dante Ursini <sursini@gmail.com>
Date:   Sat Dec 28 16:11:49 2024 -0300

    Initial commit

diff --git a/Readme.md b/Readme.md
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+++ b/Readme.md
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+# Metalib
+
+Libraries for Metal makers
+
+
+
diff --git a/metalib.scad b/metalib.scad
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+++ b/metalib.scad
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+
+include <BOSL2/std.scad>;
+
+section=20;
+height=800;
+depth=560;
+width=563;
+
+
+side_length = 20; // Length of each side of the square
+thickness = 3;   // Thickness of the material
+
+$fn=32;
+
+module miter_profile(length=200,height=30,depth=20) {
+    delta=1;
+    difference() {
+        cuboid([length,depth,height],anchor=CENTER,rounding=1);
+        miter();            // Right Miter    
+        xflip() miter();    // Left Miter                                
+    }
+    module miter() {
+        translate([length/2, 0, -height/2])                
+            yrot(-45)
+                color([0.5,0.5,0,0.5]) 
+                    cube([height, depth+2*delta, height*sqrt(2)+2],anchor=CENTER+LEFT+BOT);
+    }
+    
+}
+
+module miter_tube(length=200,height=30,depth=20,rounding=2,wall=1.5) {
+    delta=1;
+    
+    translate([length,0,0])
+    //union() {
+    difference() {
+        left(length/2)  
+            yrot(90) 
+                rect_tube(size=[height,depth], wall=wall, h=length,rounding=rounding
+                    //,anchor=F
+                    ,anchor=[1,0,0]
+                );
+        miter(-45);            // Right Miter    
+        //xflip() miter();    // Left Miter    
+        translate([-length,0,0]) zrot(180) miter(-45);    // Left Miter         
+    }
+    module miter(rot) {
+        //translate([ length/2, 0, -height/2 ])  
+        translate([0,0,0])
+            yrot(rot)
+                color([0.5,0.5,0,0.5]) 
+                    cube([height, depth+2*delta, height*sqrt(2)+2],anchor=CENTER+LEFT+BOT);
+    }
+    
+}
+
+// Visualize one piece
+if (false )miter_profile();
+
+if (false) {
+//    ydistribute(50)
+    translate([0,depth/2,0])
+    xrot(90) miter_tube(length=width,height=section,depth=section);
+    
+    translate([0,-depth/2,0])
+    xrot(-90) miter_tube(length=width,height=section,depth=section);
+  
+}
+
+/**
+ * Miter Tubes
+ *
+ */
+module miter_tubes(sections,height,depth,unfold=false){
+    echo(sections);
+    cumul=cumsum(sections);
+    moves=rotSlide(sections,unfold);
+    echo("moves",moves);
+    //assert(moves[0] ==[0,0,0,0,0,0],        concat("Move 0 is wrong",moves[0]));
+    //assert(moves[1] ==[400,0,0,90,1,0],     concat("Move 1 is wrong",moves[1]));
+    //assert(moves[2] ==[400,0,500,180,0,1],  concat("Move 2 is wrong",moves[2]));
+    
+    //assert(moves[1] ==[400,0,500,180,0],    concat("Move 1 is wrong",moves[1]));
+    
+    
+    for (index = [0:len(sections)-1]) {
+    
+        //if (index< 1) {
+            length = sections[index]; // Access the value at index i
+            slide = index == 0 ? 0: cumsum(sections)[index-1];
+            //m = index==0 ? [0,0,0,0] : moves[index-1];
+            m = moves[index];
+            x=m[0];
+            y=m[1];
+            z=m[2];
+            r=m[3];
+            echo("------------");
+            echo(concat("- tube",length," -"));
+            echo("------------");
+            echo("x",x,"y",y,"z",z,"r",r,"length",length);
+            translate([x,y, z])
+                yrot(-r)    
+            //translate([0,40*index,0])
+                    miter_tube(length=length,height=height,depth=depth);
+         //}
+    }
+}
+
+
+
+function rotSlide(v,unfold=false) =
+    v==[] ? [] : assert(is_consistent(v), "The input is not consistent." )
+    [
+        for (
+            //x   = v[0],
+            x   = 0,
+            y   = 0,
+            z   = 0,
+            r   = 0,
+            
+            xFactor = 0,
+            zFactor = 0,
+            idx = 0;
+            
+           
+            idx < len(v);
+            
+
+                xFactor = r == 0    ? 1 : (r == 180 ? -1 : 0),
+                zFactor = r == 90   ? 1 : (r == 270 ? -1 : 0),
+                //echo("test"),
+                //x = i<len(v)+1 && r == 0      ? x+v[i]*xFactor : x,
+                x = idx < len(v) ? x+v[idx]*xFactor : x,
+                //y = i<len(v)+1 && r == 90     ? y+v[i]*yFactor : y,
+                
+                //y = i < len(v) ? y+v[i]*yFactor : y ,
+                //z=0,
+                y = 0,
+                z =  idx > 0 && idx < len(v) ? z+v[idx]*zFactor: z ,
+                r = r+(unfold ? 0 : 90),
+                idx = idx+1
+        )
+            [x,y,z,r,xFactor,zFactor]];
+
+
+            
+miter_tubes([400,500,600,700,800],30,20);
+//echo ("rotSlide",rotSlide([400,500,600,500]));
+