* This example illustrates the powerful Node API used to convert points and * vectors along a node hierarchy. The following node hierarchy is implemented: *
* world * ^ * |\ * | \ * f1 eye * ^ ^ * |\ \ * | \ \ * f2 f3 f5 * ^ * | * | * f4 *
* Press the space bar to browse the different conversion methods shown here. */ import nub.core.Node; import nub.primitives.Quaternion; import nub.primitives.Vector; import nub.processing.Scene; import processing.core.PApplet; import processing.core.PFont; import processing.event.MouseEvent; /** * Thorough node api test (1) */ public class NodeAPI1 extends PApplet { Scene scene; InteractiveNode f1, f2, f3, f4, f5; Vector pnt = new Vector(40, 30, 20); Vector vec = new Vector(50, 50, 50); PFont font16, font13; Mode mode; int wColor = color(255, 255, 255); int f1Color = color(255, 0, 0); int f2Color = color(0, 255, 0); int f3Color = color(0, 0, 255); int f4Color = color(255, 0, 255); int f5Color = color(255, 255, 0); public enum Mode { m1, m2, m3, m4, m5, m6 } //Choose FX2D, JAVA2D, P2D or P3D String renderer = P3D; public void settings() { size(900, 900, renderer); } public void setup() { scene = new Scene(this, 200); mode = Mode.m1; scene.fit(1000); f1 = new InteractiveNode(scene, f1Color); f1.translate(-50, -20, 30); f1.scale(1.3f); f2 = new InteractiveNode(scene, f1, f2Color); f2.translate(60, -40, -30); f2.scale(1.2f); f3 = new InteractiveNode(scene, f1, f3Color); f3.translate(60, 55, -30); f3.rotate(new Quaternion(new Vector(0, 1, 0), -HALF_PI)); f3.scale(1.1f); f4 = new InteractiveNode(scene, f2, f4Color); f4.translate(60, -55, 30); f4.rotate(new Quaternion(new Vector(0, 1, 0), QUARTER_PI)); f4.scale(0.9f); f5 = new InteractiveNode(scene, scene.eye(), f5Color); f5.translate(-100, 0, -250); font16 = loadFont("FreeSans-16.vlw"); font13 = loadFont("FreeSans-13.vlw"); } public void draw() { background(0); //world: scene.drawAxes(); pushStyle(); stroke(wColor); strokeWeight(10); point(pnt.x(), pnt.y(), pnt.z()); popStyle(); scene.render(); drawMode(); displayText(); } void drawMode() { // points pushStyle(); noStroke(); fill(0, 255, 255); switch (mode) { ///* case m1: // f2 -> world drawArrowConnectingPoints(f2.worldLocation(pnt)); break; case m2: // f2 -> f1 drawArrowConnectingPoints(f1, f1.location(pnt, f2)); break; case m3: // f1 -> f2 drawArrowConnectingPoints(f2, f2.location(pnt, f1)); break; case m4: // f3 -> f4 drawArrowConnectingPoints(f4, f4.location(pnt, f3)); break; case m5: // f4 -> f3 drawArrowConnectingPoints(f3, f3.location(pnt, f4)); break; case m6: // f5 -> f4 drawArrowConnectingPoints(f4, f4.location(pnt, f5)); break; //*/ /* case m1: // f2 -> world drawArrowConnectingPoints(f2.worldLocation(pnt)); break; case m2: // f2 -> f1 drawArrowConnectingPoints(f1, f1.location(f2.worldLocation(pnt))); break; case m3: // f1 -> f2 drawArrowConnectingPoints(f2, f2.location(f1.worldLocation(pnt))); break; case m4: // f3 -> f4 drawArrowConnectingPoints(f4, f4.location(f3.worldLocation(pnt))); break; case m5: // f4 -> f3 drawArrowConnectingPoints(f3, f3.location(f4.worldLocation(pnt))); break; case m6: // f5 -> f4 drawArrowConnectingPoints(f4, f4.location(f5.worldLocation(pnt))); break; // */ } popStyle(); // vectors pushStyle(); noStroke(); fill(125); switch (mode) { ///* case m1: // f2 -> world drawVector(f2, vec); drawVector(f2.worldDisplacement(vec)); break; case m2: // f2 -> f1 drawVector(f2, vec); drawVector(f1, f1.displacement(vec, f2)); break; case m3: // f1 -> f2 drawVector(f1, vec); drawVector(f2, f2.displacement(vec, f1)); break; case m4: // f3 -> f4 drawVector(f3, vec); drawVector(f4, f4.displacement(vec, f3)); break; case m5: // f4 -> f3 drawVector(f4, vec); drawVector(f3, f3.displacement(vec, f4)); break; case m6: // f5 -> f4 drawVector(f5, vec); drawVector(f4, f4.displacement(vec, f5)); break; //*/ /* case m1: // f2 -> world drawVector(f2, vec); drawVector(f2.worldDisplacement(vec)); break; case m2: // f2 -> f1 drawVector(f2, vec); drawVector(f1, f1.displacement(f2.worldDisplacement(vec))); break; case m3: // f1 -> f2 drawVector(f1, vec); drawVector(f2, f2.displacement(f1.worldDisplacement(vec))); break; case m4: // f3 -> f4 drawVector(f3, vec); drawVector(f4, f4.displacement(f3.worldDisplacement(vec))); break; case m5: // f4 -> f3 drawVector(f4, vec); drawVector(f3, f3.displacement(f4.worldDisplacement(vec))); break; case m6: // f5 -> f4 drawVector(f5, vec); drawVector(f4, f4.displacement(f5.worldDisplacement(vec))); break; //*/ } popStyle(); } void displayText() { pushStyle(); Vector pos; scene.beginHUD(); textFont(font13); fill(f1Color); pos = scene.screenLocation(f1.worldPosition()); text("Node 1", pos.x(), pos.y()); fill(f2Color); pos = scene.screenLocation(f2.worldPosition()); text("Node 2", pos.x(), pos.y()); fill(f3Color); pos = scene.screenLocation(f3.worldPosition()); text("Node 3", pos.x(), pos.y()); fill(f4Color); pos = scene.screenLocation(f4.worldPosition()); text("Node 4", pos.x(), pos.y()); fill(f5Color); pos = scene.screenLocation(f5.worldPosition()); text("Node 5", pos.x(), pos.y()); fill(wColor); textFont(font16); text("Press the space bar to change mode", 5, 15); switch (mode) { case m1: // f2 -> world text("Converts vectors (grey arrows) and points (see the cyan arrow) from node 2 to world", 5, 35); break; case m2: // f2 -> f1 text("Converts vectors (grey arrows) and points (see the cyan arrow) from node 2 to node 1", 5, 35); break; case m3: // f1 -> f2 text("Converts vectors (grey arrows) and points (see the cyan arrow) from node 1 to node 2", 5, 35); break; case m4: // f3 -> f4 text("Converts vectors (grey arrows) and points (see the cyan arrow) from node 3 to node 4", 5, 35); break; case m5: // f4 -> f3 text("Converts vectors (grey arrows) and points (see the cyan arrow) from node 4 to node 3", 5, 35); break; case m6: // f5 -> f4 text("Converts vectors (grey arrows) and points (see the cyan arrow) from node 5 to node 4", 5, 35); break; } scene.endHUD(); popStyle(); } void drawArrowConnectingPoints(Vector to) { drawArrow(null, pnt, to); } void drawArrowConnectingPoints(Node node, Vector to) { drawArrow(node, pnt, to); } void drawVector(Vector to) { drawArrow(null, new Vector(), to); } void drawVector(Node node, Vector to) { drawArrow(node, new Vector(), to); } void drawArrow(Node node, Vector from, Vector to) { if (node != null) { pushMatrix(); // TODO fix me! // scene.applyWorldTransformation(node); scene.drawArrow(from, to, 1); popMatrix(); } else scene.drawArrow(from, to, 1); } public void keyPressed() { if (key == ' ') switch (mode) { case m1: mode = Mode.m2; break; case m2: mode = Mode.m3; break; case m3: mode = Mode.m4; break; case m4: mode = Mode.m5; break; case m5: mode = Mode.m6; break; case m6: mode = Mode.m1; break; } if (key == 'v' || key == 'V') Scene.leftHanded = !Scene.leftHanded; if (key == '+') scene.eye().setMagnitude(scene.eye().magnitude() * 1.1f); if (key == '-') scene.eye().setMagnitude(scene.eye().magnitude() / 1.1f); } @Override public void mouseMoved() { //scene.track(); scene.tag(); } @Override public void mouseDragged() { if (mouseButton == LEFT) scene.spin(); else if (mouseButton == RIGHT) scene.shift(); else scene.moveForward(mouseX - pmouseX); } @Override public void mouseWheel(MouseEvent event) { scene.zoom(event.getCount() * 20); } @Override public void mouseClicked(MouseEvent event) { if (event.getCount() == 2) if (event.getButton() == LEFT) scene.focus(); else scene.align(); } public class InteractiveNode extends Node { int _c; Vector pnt; Scene scene; public InteractiveNode(Scene graph, int color) { super(); enableHint(Node.BULLSEYE | Node.AXES); scene = graph; _c = color; pnt = new Vector(40, 30, 20); } public InteractiveNode(Scene graph, Node node, int color) { super(node); enableHint(Node.BULLSEYE | Node.AXES); scene = graph; _c = color; pnt = new Vector(40, 30, 20); } } public static void main(String[] args) { PApplet.main(new String[]{"NodeAPI1"}); } }