import processing.core.*; 
import processing.xml.*; 

public class svgtest extends PApplet {

int svgWidth, svgHeight;
Shape3D[] shapes;
int num;

public void setup() {
   
  size(1024, 728, P3D);

  XMLElement xml = new XMLElement(this, "testdrawing.svg");
   
   svgWidth = xml.getIntAttribute("width");
   svgHeight = xml.getIntAttribute("height");
  
   // create 3d SVG shapes 
   XMLElement[] kids = xml.getChild(0).getChildren();
   num = kids.length;
   System.out.println("no of children"+num);
   shapes = new Shape3D[num];
   
   for(int i=0; i<num; i++) {
     String id = kids[i].getStringAttribute("id");
     shapes[i] = new Shape3D(id, kids[i]);
   }
   
   colorMode(HSB, num);
   noStroke();
   
  
  
}
 
 
public void draw() {

  background(0);
    
  // draw 3d shapes
  for(int i=0; i<num; i++) {

    Shape3D s = shapes[i];
    int c;
    
    pushMatrix();
    c=color(i,128,255);
     
      // draw shape with custom color
      s.disableStyle();
      fill(c);
      shape(s, 0, 0);
    
    popMatrix();
  } 
}

 
}

 

import processing.core.PGraphics;
import processing.core.PShapeSVG;
import processing.xml.XMLElement;

class Shape3D extends PShapeSVG {

  String id;  
  float depth;

  Shape3D(String _id, XMLElement xml) {
    super(null, xml); 
    parsePath();  //  create vertices
    id = _id;
  }
  
  public void draw(PGraphics g) {
   
    // draw bottom
    quickDraw(g);
    
    if(depth > 0) {  
      
      // draw top
      g.pushMatrix();
      g.translate(0, 0, depth);
      quickDraw(g);
      g.popMatrix();
      
      // draw side faces
      g.beginShape(QUAD_STRIP);
      for(int i=0; i<vertexCount; i++) {
        float[] v = vertices[i];
        g.vertex(v[0], v[1], 0);
        g.vertex(v[0], v[1], depth);
      }
      g.endShape();
    }
    
  } 
  
  // quick and dirty - no curves just straight lines
  public void quickDraw(PGraphics g) {
    g.beginShape();
    for(int i=0; i<vertexCount; i++) 
      g.vertex(vertices[i][0], vertices[i][1]);
    g.endShape();
  }

}