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Java implementation of BSP based CSG (Constructive Solid Geometry)
/**
* RaspberryPiMount.java
*
* Copyright 2014-2014 Michael Hoffer . All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY Michael Hoffer "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Michael Hoffer OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of Michael Hoffer .
*/
package eu.mihosoft.vrl.v3d.samples;
import eu.mihosoft.vrl.v3d.CSG;
import eu.mihosoft.vrl.v3d.Extrude;
import eu.mihosoft.vrl.v3d.FileUtil;
import eu.mihosoft.vrl.v3d.Polygon;
import eu.mihosoft.vrl.v3d.Transform;
import eu.mihosoft.vrl.v3d.Vector3d;
import java.io.IOException;
import java.nio.file.Paths;
/**
*
* @author Michael Hoffer <[email protected]>
*/
public class RaspberryPiMount {
public static CSG board() {
double board_thickness = 2;
double bottom_thickness = 2;
double board_mounting_height = 4;
double outer_offset = 4;
double inner_offset = 4;
double board_width = 85.6;
double board_height = 56;
double bw = board_width;
double bh = board_height;
double sd1 = 14;
double sd2 = 11;
double sd3 = 18;
Polygon board_points_exact = Polygon.fromPoints(
new Vector3d(0, 0),
new Vector3d(0, bh),
new Vector3d(bw, bh),
new Vector3d(bw, bh - sd1),
new Vector3d(bw - sd3, bh - sd1),
new Vector3d(bw - sd3, sd2),
new Vector3d(bw, sd2),
new Vector3d(bw, 0)
);
// outer offset
double ox1 = outer_offset;
double oy1 = outer_offset;
// inner offset
double ox2 = inner_offset;
double oy2 = inner_offset;
CSG outer = Extrude.points(
new Vector3d(0, 0, bottom_thickness),
new Vector3d(0-ox1,0-oy1),
new Vector3d(0-ox1,bh+oy1),
new Vector3d(bw+ox1,bh+oy1),
new Vector3d(bw+ox1,bh-sd1),
new Vector3d(bw-sd3,bh-sd1),
new Vector3d(bw-sd3,sd2),
new Vector3d(bw+ox1,sd2),
new Vector3d(bw+ox1,0-oy1)
);
CSG inner = Extrude.points(
new Vector3d(0, 0, bottom_thickness),
new Vector3d(0+ox2,0+oy2),
new Vector3d(0+ox2,bh-oy2),
new Vector3d(bw-ox2,bh-oy2),
new Vector3d(bw-ox2,bh-sd1+oy2),
new Vector3d(bw-sd3-ox2,bh-sd1+oy2),
new Vector3d(bw-sd3-ox2,sd2-oy2),
new Vector3d(bw-ox2,sd2-oy2),
new Vector3d(bw-ox2,0+oy2)
);
return outer.difference(inner).transformed(Transform.unity().rotX(180).translateY(-bh));
}
public static CSG boardAndPegs() {
double board_width = 85.6;
double board_height = 56;
double bw = board_width;
double bh = board_height;
double outer_offset = 4;
double bottom_thickness = 2;
CSG board = board();
CSG peg1 = RaspberryPeg.peg().transformed(Transform.unity().translate(0,bh-8,-bottom_thickness));
CSG peg2 = RaspberryPeg.peg().transformed(Transform.unity().translate(8,bh,-bottom_thickness).rotZ(90));
CSG peg3 = RaspberryPeg.peg().transformed(Transform.unity().translate(bw/2,bh,-bottom_thickness).rotZ(90));
// translate([bw,outer_offset,0])
//rotate([0,0,180])
CSG peg4 = RaspberryPeg.peg().transformed(Transform.unity().translate(bw,bh-outer_offset,-bottom_thickness).rotZ(180));
// translate([bw-12,bh,0])
//rotate([0,0,270])
CSG peg5 = RaspberryPeg.peg().transformed(Transform.unity().translate(bw-12,0,-bottom_thickness).rotZ(270));
// translate([30,bh,0])
//rotate([0,0,270])
CSG peg6 = RaspberryPeg.peg().transformed(Transform.unity().translate(30,0,-bottom_thickness).rotZ(270));
CSG union = board.union(peg1).union(peg2).union(peg3).union(peg4).union(peg5).union(peg6);
return union;
// return peg1;
}
public static void main(String[] args) throws IOException {
// save union as stl
// FileUtil.write(Paths.get("sample.stl"), new ServoHead().servoHeadFemale().transformed(Transform.unity().scale(1.0)).toStlString());
CSG board = RaspberryPiMount.boardAndPegs().transformed(Transform.unity().rotX(180));
FileUtil.write(Paths.get("sample.stl"), board.toStlString());
}
}