add angle bracket mounting system

rack-mount/angle-bracket/README.md

@@ -0,0 +1,7 @@
+
+# Angle Bracket System
+
+
+![demo](./animate.gif)
+
+Please see [entry.scad](./entry.scad) for config and building. Make sure the correct rack profile is configured in [rackFrame.scad](../../config/rackFrame.scad).

rack-mount/angle-bracket/animate.scad

@@ -0,0 +1,24 @@
+use <./entry.scad>
+
+$vpt = [120,-30,63];
+$vpr = [74,0,25];
+$vpd = 550;
+$vpf = 22.50;
+
+animateAngleBrackets(at=$t);
+
+
+module animateAngleBrackets(at=$t) {
+
+    x = 150;
+    y = 70;
+    dx = abs(lerp(a=-20, b=20, t=at));    
+    dy = abs(lerp(a=-50, b=50, t=at));
+
+    u = abs(at - 0.5) > 0.25 ? 3 : 4;
+
+    angleBrackets(visualize=true, boxWidth=x+dx, boxDepth=y+dy, u=u);
+
+}
+
+

rack-mount/angle-bracket/entry.scad

@@ -0,0 +1,36 @@
+include <../common.scad>
+
+use <../enclosed-box/sideRail.scad>
+
+
+/*
+  Simple angle bracket mounting system. Mainly derived the enclosed box system. 
+*/
+module angleBrackets (
+    // begin config ////////////////////////////////////////////////////////////////////////////////////////////////////////
+    
+    // Does not affect any part dimensions. Set this to true to visualize how a box would be mounted.
+    visualize = false,
+
+
+    thickness = 3,
+    boxWidth = 160,
+    boxDepth = 120,
+    sideVent = false,
+    u = 3
+
+    // end config //////////////////////////////////////////////////////////////////////////////////////////////////////////
+) {    
+
+    sideSupportRailBase(top=false, defaultThickness=thickness, railSideThickness=thickness, supportedZ=10*u-2*thickness, supportedY=boxDepth, supportedX=boxWidth, sideVent=sideVent);
+
+    rightRailTrans = visualize
+        ? translate(v=[boxWidth,0,0]) * mirror(v=[1,0,0])
+        : translate(v=[30,0,0]) * mirror(v=[1,0,0]);
+        
+    multmatrix(rightRailTrans)
+    sideSupportRailBase(top=false, defaultThickness=thickness, railSideThickness=thickness, supportedZ=10*u-2*thickness, supportedY=boxDepth, supportedX=boxWidth, sideVent=sideVent);
+}
+
+
+angleBrackets();