When I turn the 3D space, I want an object remains in place: how to do ?

all

Hello,

I wrote a small P5 code to explain my problem. In P3D, there are 2 cubes : white cube and red cube. I want to rotate the white cube in the 3 dimensions without rotate the red cube. I use a very simple Max standalone control (rotateX, rotateY, rotateZ) to rotate the white cube (OSC). You can download this standalone here : https://dl.dropboxusercontent.com/u/83095197/Rotation.zip

This work fine if I rotate only one variable (rotateX with rotateY = 0 et rotateZ = 0; rotateY with rotateX = 0 et rotateZ = 0; rotateZ with rotateX = 0 et rotateY = 0). On the other side, it doesn't work if I rotate 2, 3 variables in the same time : the red cube move. How to maintain the red cube in place by modifying several parameters at once ?

Here, my P5 code :

                        // OSC
                        import oscP5.*;
                        import netP5.*;
                        OscP5 oscP5;
                        NetAddress myRemoteLocation;

                        // VARIABLES
                        int DIMX, DIMY, DIMZ;
                        float translateX, translateY, translateZ;
                        float rotateX, rotateY, rotateZ;


                        void setup() {
                          size(600, 600, P3D); 
                          DIMX = width/2; 
                          DIMY = height/2;
                          DIMZ = 300;

                          // OSC
                          oscP5 = new OscP5(this, 12000);
                          myRemoteLocation = new NetAddress("127.0.0.1", 12000);

                          // VARIABLES
                          translateX = width/2;
                          translateY = height/2;
                          translateZ = -height*2;
                          rotateX = 0;
                          rotateY = 0;
                          rotateZ = 0;
                        }


                        void draw() {
                          background(0);

                          // WHITE CUBE
                          translate(translateX, translateY, translateZ);
                          rotateX(radians(rotateX));
                          rotateY(radians(rotateY));
                          rotateZ(radians(rotateZ));
                          noFill();
                          stroke(255);
                          box(DIMX*2, DIMY*2, DIMZ*2);

                          // RED CUBE
                          pushMatrix();
                          rotateX(radians(rotateX * -1));
                          rotateY(radians(rotateY * -1));
                          rotateZ(radians(rotateZ * -1));
                          noFill();
                          stroke(255, 0, 0);
                          box(DIMX, DIMY, DIMZ);
                          popMatrix();
                        }


                        void oscEvent(OscMessage theOscMessage) {

                          // ROTATE X
                          if (theOscMessage.checkAddrPattern("/max2P5/rotateX")==true) {
                            rotateX=theOscMessage.get(0).floatValue();
                          }

                          // ROTATE Y
                          if (theOscMessage.checkAddrPattern("/max2P5/rotateY")==true) {
                            rotateY=theOscMessage.get(0).floatValue();
                          }

                          // ROTATE Z
                          if (theOscMessage.checkAddrPattern("/max2P5/rotateZ")==true) {
                            rotateZ=theOscMessage.get(0).floatValue();
                          }
                        }

Thank you :) Best, Alex

Chrisir

Look at pushMatrix and popMatrix

all

Of course !!! I feel stupid :) Thank you...

Chrisir

;-)

all

I'm still in difficulty...

I'm going to be more precise with this new small P5 code. I use P3D. I draw a white cube to see the space and its transformation (translation and rotation in the 3 dimensions). You can transform the space with the new Max standalone controls available here : https://dl.dropboxusercontent.com/u/83095197/Rotation.zip

Then, I use a picture file (.png) placed inside this space. When I transform the space in the 3 dimensions, I would like that the picture file move with the white cube to keep its place in the cube but in the same time, I would like that the file doesn't rotate with the cube. I need that the file be still in front of us.

This work fine if I rotate only one variable (rotateX with rotateY = 0 et rotateZ = 0; rotateY with rotateX = 0 et rotateZ = 0; rotateZ with rotateX = 0 et rotateY = 0), but it doesn't work if I rotate 2, 3 variables in the same time : the picture file move. How to maintain the picture file in front of us by modifying several parameters at once ?

                // OSC
                import oscP5.*;
                import netP5.*;
                OscP5 oscP5;
                NetAddress myRemoteLocation;

                // VARIABLES
                int DIMX, DIMY, DIMZ;
                float translateX, translateY, translateZ;
                float rotateX, rotateY, rotateZ;

                // IMAGE
                PImage ellipse;


                void setup() {
                  size(600, 600, P3D); 
                  DIMX = width/2; 
                  DIMY = height/2;
                  DIMZ = 300;

                  // OSC
                  oscP5 = new OscP5(this, 12000);
                  myRemoteLocation = new NetAddress("127.0.0.1", 12000);

                  // VARIABLES
                  translateX = width/2;
                  translateY = height/2;
                  translateZ = -height*2;
                  rotateX = 0;
                  rotateY = 0;
                  rotateZ = 0;

                  // IMAGES
                  ellipse = loadImage("Ellipse_512_blurG_step5_0.png");
                }


                void draw() {
                  background(0);

                  // GLOBAL TRANSFORMATION OF THE SAPCE
                  translate(translateX, translateY, translateZ);
                  rotateX(radians(rotateX));
                  rotateY(radians(rotateY));
                  rotateZ(radians(rotateZ));

                  // WHITE CUBE (REPRESENT THE SPACE)
                  noFill();
                  stroke(255);
                  box(DIMX*2, DIMY*2, DIMZ*2);

                  // ELLIPSE
                  translate(DIMX/4, DIMY/4, DIMZ/4);
                  rotateX(radians(rotateX * -1));
                  rotateY(radians(rotateY * -1));
                  rotateZ(radians(rotateZ * -1));

                  imageMode(CENTER);
                  tint(255, 0, 0);
                  image(ellipse, 0, 0, 200, 200);
                }


                void oscEvent(OscMessage theOscMessage) {

                  // TRANSLATE X
                  if (theOscMessage.checkAddrPattern("/max2P5/translateX")==true) {
                    translateX=theOscMessage.get(0).floatValue();
                  }

                  // TRANSLATE Y
                  if (theOscMessage.checkAddrPattern("/max2P5/translateY")==true) {
                    translateY=theOscMessage.get(0).floatValue();
                  }

                  // TRANSLATE Z
                  if (theOscMessage.checkAddrPattern("/max2P5/translateZ")==true) {
                    translateZ=theOscMessage.get(0).floatValue();
                  }

                  // ROTATE X
                  if (theOscMessage.checkAddrPattern("/max2P5/rotateX")==true) {
                    rotateX=theOscMessage.get(0).floatValue();
                  }

                  // ROTATE Y
                  if (theOscMessage.checkAddrPattern("/max2P5/rotateY")==true) {
                    rotateY=theOscMessage.get(0).floatValue();
                  }

                  // ROTATE Z
                  if (theOscMessage.checkAddrPattern("/max2P5/rotateZ")==true) {
                    rotateZ=theOscMessage.get(0).floatValue();
                  }
                }

Thank you !!! Best, Alex

Chrisir

??

where did you use pushMatrix & popMatrix?

Use them around 41 and 52 as a pair and likewise around

52 & 61

I am not sure about that osc event though

all

I didn't add pushMatrix() & popMatrix() in the previous code because I wanted to explain my problem with a different configuration : a picture file (red ellipse) not placed in the center of the white cube. I checked many configuration of pushMatrix() & popMatrix() but I don't know how to resolve my problem = I want that the red ellipse keep its position inside the cube (when I translate, rotate the cube in the 3 dimensions) but I don't want that this one rotate : I want to keep the picture always in front of us. I tried your proposition of course but it doesn't work... OSC work fine. Best,

Chrisir

You need a hud

A head up display?

Osc has this?