package p5; import anar.*; import java.util.*; import lsys.Grammar; import processing.core.PApplet; public class SimpleStructureTurtleB extends PApplet { /* * Example for Anar library by Guillaume LaBelle + Julien Nembrini * http://anar.ch */ Pts ptsA = new Pts(); Face f; Grammar grammar; Obj faces; Obj lines; Transform T; Translate t; Transform r; Scale s; Sliders mySlider; public void setup(){ size(800,400,OPENGL); Anar.init(this); initGrammar(); initForm(); interpretGrammar(); } void initGrammar(){ grammar = new Grammar("fg"); // here define the rules // * means any kind of symbol // the example rules below are therefore non contextual grammar.addRule("*f*","fg[gf][hfh]"); grammar.addRule("*g*","gg[hif]"); grammar.addRule("*h*","ghjh"); grammar.addRule("*j*","[gifh]"); // this one makes it context dependant grammar.addRule("igh","[ghfg]"); println(grammar); } void initForm(){ faces = new Obj(); Param pvRx = new Param(1.0f,0,3.14f,"rotate X"); Param pvRy = new Param(2.0f,0,3.14f,"rotate Y"); Param pvRz = new Param(3.0f,0,3.14f,"rotate Z"); r = new Transform(); RotateX rx = new RotateX(pvRx); RotateY ry = new RotateY(pvRy); RotateZ rz = new RotateZ(pvRz); r.add(rx); r.add(ry); r.add(rz); Param pvTx = new Param(00,0,100,"translate"); Param pvTy = new Param(0,0,10,"translate"); Param pvTz = new Param(10,0,100,"translate"); t = new Translate(Anar.Pt(pvTx,pvTy,pvTz)); Param pvSx = new Param(0.99f,0,10,"scale X"); Param pvSy = new Param(0.99f,0,10,"scale Y"); Param pvSz = new Param(0.99f,0,10,"scale Z"); s = new Scale(Anar.Pt(pvSx,pvSy,pvSz)); T = new Transform(); T.add(t); } void interpretGrammar(){ faces = new Obj(); lines = new Obj(); Face seedFace = new Star(40,50,6); Face currentFace = seedFace; Pts stackA = new Pts(); int indexA = 0; Pt turtleA = seedFace.pt(indexA); ArrayList stackPtsA = new ArrayList(); Pts ptsCollectorA = new Pts(); ptsCollectorA.add(turtleA); Pts stackB = new Pts(); int indexB = seedFace.numOfPts()/3; Pt turtleB = seedFace.pt(indexB); ArrayList stackPtsB = new ArrayList(); Pts ptsCollectorB = new Pts(); ptsCollectorB.add(turtleB); Pts stackC = new Pts(); int indexC = (2*seedFace.numOfPts())/3; Pt turtleC = seedFace.pt(indexC); ArrayList stackPtsC = new ArrayList(); Pts ptsCollectorC = new Pts(); ptsCollectorC.add(turtleC); Iterator it = grammar.getSentence().iterator(); while (it.hasNext()){ String str = (String)it.next(); switch(str.charAt(0)){ case 'f': // create translated copy from current face Pts pts = new Pts(); Iterator itFace = currentFace.iterator(); while (itFace.hasNext()){ pts.add(Anar.Pt((Pt)itFace.next(),t)); } Face f = new Face(pts); // TODO (1) add size() method to Face // TODO (1) transform the face (missing methods) faces.add(f); // move the turtle to the next face currentFace = f; indexA %= currentFace.numOfPts(); turtleA = currentFace.pt(indexA); indexB %= currentFace.numOfPts(); turtleB = currentFace.pt(indexB); indexC %= currentFace.numOfPts(); turtleC = currentFace.pt(indexC); case 'g': indexA = (indexA+1)%currentFace.numOfPts(); turtleA = currentFace.pt(indexA); indexB = (indexB+1)%currentFace.numOfPts(); turtleB = currentFace.pt(indexB); indexC = (indexC+1)%currentFace.numOfPts(); turtleC = currentFace.pt(indexC); break; case 'h': indexA = (indexA+currentFace.numOfPts()-1)%currentFace.numOfPts(); turtleA = currentFace.pt(indexA); indexB = (indexB+currentFace.numOfPts()-1)%currentFace.numOfPts(); turtleB = currentFace.pt(indexB); indexC = (indexC+currentFace.numOfPts()-1)%currentFace.numOfPts(); turtleC = currentFace.pt(indexC); break; case 'i': indexA = (indexA+2)%currentFace.numOfPts(); turtleA = currentFace.pt(indexA); indexB = (indexB+2)%currentFace.numOfPts(); turtleB = currentFace.pt(indexB); indexC = (indexC+2)%currentFace.numOfPts(); turtleC = currentFace.pt(indexC); break; case 'j': indexA = (indexA+currentFace.numOfPts()-2)%currentFace.numOfPts(); turtleA = currentFace.pt(indexA); indexB = (indexB+currentFace.numOfPts()-2)%currentFace.numOfPts(); turtleB = currentFace.pt(indexB); indexC = (indexC+currentFace.numOfPts()-2)%currentFace.numOfPts(); turtleC = currentFace.pt(indexC); break; case '[': stackA.add(turtleA); stackPtsA.add(ptsCollectorA); ptsCollectorA = new Pts(); ptsCollectorA.add(turtleA); stackB.add(turtleB); stackPtsB.add(ptsCollectorB); ptsCollectorB = new Pts(); ptsCollectorB.add(turtleB); stackC.add(turtleC); stackPtsC.add(ptsCollectorC); ptsCollectorC = new Pts(); ptsCollectorC.add(turtleC); break; case ']': ptsCollectorA.add(turtleA); turtleA = stackA.remove(stackA.size()-1); lines.add(ptsCollectorA); ptsCollectorA = (Pts)stackPtsA.remove(stackPtsA.size()-1); ptsCollectorB.add(turtleB); turtleB = stackB.remove(stackB.size()-1); lines.add(ptsCollectorB); ptsCollectorB = (Pts)stackPtsB.remove(stackPtsB.size()-1); ptsCollectorC.add(turtleC); turtleC = stackC.remove(stackC.size()-1); lines.add(ptsCollectorC); ptsCollectorC = (Pts)stackPtsC.remove(stackPtsC.size()-1); break; default: break; } } lines.pts.render = new RenderPtsLine(new AColor(128)); Anar.camTarget(faces); mySlider = new Sliders(lines); } public void draw(){ if(frameCount%2==0) background(155); else background(153); // faces.draw(); lines.draw(); mySlider.draw(); } public void keyPressed(){ if(key=='a'){ grammar.step(); println(grammar); interpretGrammar(); } if(key=='s'){ grammar.reset(); println(grammar); interpretGrammar(); } } public static void main(String[] args){ PApplet.main(new String[]{SimpleStructureTurtleB.class.getName()}); } }