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OpenGL error

philspitlerphilspitler
edited May 2015 in Android Mode

I'm trying to run this 3d sphere viewer on Android and am getting openGL errors.

This is the error I get.

Already called drawing on another PGraphicsOpenGL object FATAL EXCEPTION: GLThread 202 Process: processing.test.eqviewer, PID: 2258 java.lang.NullPointerException at processing.opengl.PGraphicsOpenGL.setFramebuffer(Unknown Source) at processing.opengl.PGraphicsOpenGL.beginPixelsOp(Unknown Source) at processing.opengl.PGraphicsOpenGL.readPixels(Unknown Source) at processing.opengl.PGraphicsOpenGL.loadPixels(Unknown Source) at processing.test.eqviewer.EqViewer.setup(EqViewer.java:81) at processing.core.PApplet.handleDraw(Unknown Source) at processing.opengl.PGL$AndroidRenderer.onDrawFrame(Unknown Source) at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1523) at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)

The code works great in JAVA mode on OSX.

Any ideas?

Thanks.

Phil

public boolean showlight = false;
PGraphics portal;
PImage gp;
public boolean viewwin= false;
public boolean autorotate = false;

import processing.opengl.*;
PImage bg;
PImage texmap;
PGraphics pop;
PImage mmget;
int sDetail = 175;  //Sphere detail setting
float rotationX = 0;
float rotationY = 0;
float velocityX = 0;
float velocityY = 0;
float globeRadius = 300;
float pushBack = 0;
public float rotation = 0.0f;
float[] cx,cz,sphereX,sphereY,sphereZ;
float sinLUT[];
float cosLUT[];
float SINCOS_PRECISION = 0.5f;
int SINCOS_LENGTH = int(360.0 / SINCOS_PRECISION);
public String  [] file;


// 

void setup()
{
  file = new String[9];

file[0]  = "vr.jpg";  
  mmget = new PImage (255,255);


 if (texmap == null){
  size(640, 480, P3D); 
      texmap  = loadImage  (file[0]);

 }


 // smooth();
  pop = createGraphics(width,height,P3D);
  pop.beginDraw();
  loadPixels();
  portal = createGraphics(width,height,P3D);
  portal.beginDraw();
  portal.loadPixels();
if (texmap !=null){
  portal.image(texmap,0,0,width,height);
  portal.endDraw();
  portal.updatePixels();

  pop.loadPixels();
  pop.image(texmap,0,0,width,height);
  pop.updatePixels();
}
  initializeSphere(sDetail);

  gp = new PImage (640,480);
  noStroke();
  gp.loadPixels();


}



int x,y,i,w=512;

int r(int a){return int(random(a));}

void draw()
{   


  background(0);




  rotation +=.02;
 translate(width/2,height/2, 300);
  //rotateY(radians(180)); // uncomment to look ahead
 if (autorotate){
 rotateY(rotation);
 }

 renderGlobe();


if (viewwin){
 for (int x= 0;x<width;x++){
 for (int y= 0;y<height;y++){

      set (x,y,portal.pixels[x+width*y]);

   }
 }

}
 }


void renderGlobe()
{
  pushMatrix();
  //translate(width/2.0, height/2.0, pushBack);
  pushMatrix();
  noFill();
  stroke(255,200);
  strokeWeight(2);
  //smooth();
  popMatrix();
  lights();   
  pushMatrix();
  rotateX( radians(-rotationX) ); 
  rotateY( radians(270 - rotationY) );
  fill(200);
  noStroke();
  textureMode(IMAGE); 




  texturedSphere(globeRadius,texmap);

  popMatrix(); 
  popMatrix();
  rotationX += velocityX;
  rotationY += velocityY;
  velocityX *= 0.95;
  velocityY *= 0.95;

  // Implements mouse control (interaction will be inverse when sphere is  upside down)
  if(mousePressed){
    velocityX += (mouseY-pmouseY) * 0.01;
    velocityY -= (mouseX-pmouseX) * 0.01;
  }
}

void initializeSphere(int res)
{
  sinLUT = new float[SINCOS_LENGTH];
  cosLUT = new float[SINCOS_LENGTH];

  for (int i = 0; i < SINCOS_LENGTH; i++) {
    sinLUT[i] = (float) Math.sin(i * DEG_TO_RAD * SINCOS_PRECISION);
    cosLUT[i] = (float) Math.cos(i * DEG_TO_RAD * SINCOS_PRECISION);
  }

  float delta = (float)SINCOS_LENGTH/res;
  float[] cx = new float[res];
  float[] cz = new float[res];

  // Calc unit circle in XZ plane
  for (int i = 0; i < res; i++) {
    cx[i] = -cosLUT[(int) (i*delta) % SINCOS_LENGTH];
    cz[i] = sinLUT[(int) (i*delta) % SINCOS_LENGTH];
  }

  // Computing vertexlist vertexlist starts at south pole
  int vertCount = res * (res-1) + 2;
  int currVert = 0;

  // Re-init arrays to store vertices
  sphereX = new float[vertCount];
  sphereY = new float[vertCount];
  sphereZ = new float[vertCount];
  float angle_step = (SINCOS_LENGTH*0.5f)/res;
  float angle = angle_step;

  // Step along Y axis
  for (int i = 1; i < res; i++) {
    float curradius = sinLUT[(int) angle % SINCOS_LENGTH];
    float currY = -cosLUT[(int) angle % SINCOS_LENGTH];
    for (int j = 0; j < res; j++) {
      sphereX[currVert] = cx[j] * curradius;
      sphereY[currVert] = currY;
      sphereZ[currVert++] = cz[j] * curradius;
    }
    angle += angle_step;
  }
  sDetail = res;
}

// Generic routine to draw textured sphere
void texturedSphere(float r, PImage t)
{
  int v1,v11,v2;
  r = (r + 240 ) * 0.33;
  beginShape(TRIANGLE_STRIP);
  texture(t);
  float iu=(float)(t.width-1)/(sDetail);
  float iv=(float)(t.height-1)/(sDetail);
  float u=0,v=iv;
  for (int i = 0; i < sDetail; i++) {
    vertex(0, -r, 0,u,0);
    vertex(sphereX[i]*r, sphereY[i]*r, sphereZ[i]*r, u, v);
    u+=iu;
  }
  vertex(0, -r, 0,u,0);
  vertex(sphereX[0]*r, sphereY[0]*r, sphereZ[0]*r, u, v);
  endShape(CLOSE);  

  // Middle rings
  int voff = 0;
  for(int i = 2; i < sDetail; i++) {
    v1=v11=voff;
    voff += sDetail;
    v2=voff;
    u=0;
    beginShape(TRIANGLE_STRIP);
    texture(t);
    for (int j = 0; j < sDetail; j++) {
      vertex(sphereX[v1]*r, sphereY[v1]*r, sphereZ[v1++]*r, u, v);
      vertex(sphereX[v2]*r, sphereY[v2]*r, sphereZ[v2++]*r, u, v+iv);
      u+=iu;
    }

    // Close each ring
    v1=v11;
    v2=voff;
    vertex(sphereX[v1]*r, sphereY[v1]*r, sphereZ[v1]*r, u, v);
    vertex(sphereX[v2]*r, sphereY[v2]*r, sphereZ[v2]*r, u, v+iv);
    endShape(CLOSE);
    v+=iv;
  }
  u=0;

  // Add the northern cap
  beginShape(TRIANGLE_STRIP);
  texture(t);
  for (int i = 0; i < sDetail; i++) {
    v2 = voff + i;
    vertex(sphereX[v2]*r, sphereY[v2]*r, sphereZ[v2]*r, u, v);
    vertex(0, r, 0,u,v+iv);   
    u+=iu;
  }
  vertex(0, r, 0,u, v+iv);
  vertex(sphereX[voff]*r, sphereY[voff]*r, sphereZ[voff]*r, u, v);
  endShape(CLOSE);

}
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