Re: [gl4java-usergroup] FPS?

[<kp...@in...>]

On Tue, 13 Feb 2001 08:42:59 -0300, Felipe Gomes de Carvalho wrote:

>What is necessary to calculate the FPS of an application in Java, using GL4Java ?

Simple version (in your code that extends GLAnimCanvas)

 stopFpsCounter();
 int fps=(int)(getFps());   // Fractions are only theoretical.
 resetFpsCounter();


Extended version, draws our fps upper-right - and updates only every
second:

    private long lastfpscount=0;
    private String fpstext="0 fps";
    private String verticetext="0 vertices";
    private String facetext="0 faces";

    private void drawfps() {
        if (System.currentTimeMillis()-lastfpscount>1000) {
            stopFpsCounter();
            fpstext=(int)(getFps())+" fps";
            lastfpscount=System.currentTimeMillis();
            resetFpsCounter();
        }
        float xoffset=(float)global.screenwidth-100.0f; // (pixels)
       
gl.glPushAttrib(GL_DEPTH_BUFFER_BIT|GL_ENABLE_BIT|GL_FOG_BIT|GL_LIGHTING
_BIT|GL_DEPTH_BUFFER_BIT);
   	    gl.glPushMatrix();
	gl.glLoadIdentity();
     	gl.glMatrixMode(GL_PROJECTION);
  	    gl.glPushMatrix();
        gl.glLoadIdentity ();
	    gl.glOrtho(0, global.screenwidth, global.screenheight, 0,
-99999, 99999);

        gl.glDisable(GL_DEPTH_TEST);
        gl.glDisable(GL_TEXTURE_2D);
   		gl.glDisable(GL_LIGHTING);

        gl.glColor3f(1f,1f,1f);
	    gl.glRasterPos2f(xoffset,12.0f);
	   
glut.glutBitmapString(glut.GLUT_BITMAP_HELVETICA_10,fpstext);
	    gl.glRasterPos2f(xoffset,26.0f);
	   
glut.glutBitmapString(glut.GLUT_BITMAP_HELVETICA_10,verticetext);
	    gl.glRasterPos2f(xoffset,40.0f);
	   
glut.glutBitmapString(glut.GLUT_BITMAP_HELVETICA_10,facetext);
   	    gl.glPopMatrix();
		gl.glMatrixMode(GL_MODELVIEW);
   	    gl.glPopMatrix();
        gl.glPopAttrib();
    }





>
>
>Thanks