Hi, i have a problem with a simple pyramide, the bottom is not drawn, the code is from the nehe tutorial (moreless). Does anybody know what is wrong?
public class TestRenderer implements GLEventListener{
float xrot; // X Rotation ( NEW )
float yrot; // Y Rotation ( NEW )
float zrot;
public void init(GLDrawable glDrawable){
final GL gl = glDrawable.getGL();
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
gl.glShadeModel(GL.GL_SMOOTH);
gl.glClearDepth(1.0); // Depth Buffer Setup
gl.glEnable(GL.GL_DEPTH_TEST); // Enables Depth Testing
gl.glDepthFunc(GL.GL_LEQUAL); // The Type Of Depth Testing To Do
gl.glHint(GL.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST);
}
public void displayChanged(GLDrawable gLDrawable, boolean modeChanged, boolean deviceChanged){
}
public void display(GLDrawable gLDrawable)
{
final GL gl = gLDrawable.getGL();
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
gl.glLoadIdentity();
gl.glTranslatef(-1.5f, 0.0f, -6.0f);
gl.glRotatef(xrot,1.0f,0.0f,0.0f);
gl.glRotatef(yrot,0.0f,1.0f,0.0f);
gl.glRotatef(zrot,0.0f,0.0f,1.0f);
gl.glBegin(GL.GL_POLYGON); // Drawing Using Triangles
gl.glColor3f(1.0f,0.0f,0.0f); // Red
gl.glVertex3f( 0.0f, 1.0f, 0.0f); // Top Of Triangle (Front)
gl.glColor3f(0.0f,1.0f,0.0f); // Green
gl.glVertex3f(-1.0f,-1.0f, 1.0f); // Left Of Triangle (Front)
gl.glColor3f(0.0f,0.0f,1.0f); // Blue
gl.glVertex3f( 1.0f,-1.0f, 1.0f); // Right Of Triangle (Front)
gl.glColor3f(1.0f,0.0f,0.0f); // Red
gl.glVertex3f( 0.0f, 1.0f, 0.0f); // Top Of Triangle (Right)
gl.glColor3f(0.0f,0.0f,1.0f); // Blue
gl.glVertex3f( 1.0f,-1.0f, 1.0f); // Left Of Triangle (Right)
gl.glColor3f(0.0f,1.0f,0.0f); // Green
gl.glVertex3f( 1.0f,-1.0f, -1.0f); // Right Of Triangle (Right)
gl.glColor3f(1.0f,0.0f,0.0f); // Red
gl.glVertex3f( 0.0f, 1.0f, 0.0f); // Top Of Triangle (Back)
gl.glColor3f(0.0f,1.0f,0.0f); // Green
gl.glVertex3f( 1.0f,-1.0f, -1.0f); // Left Of Triangle (Back)
gl.glColor3f(0.0f,0.0f,1.0f); // Blue
gl.glVertex3f(-1.0f,-1.0f, -1.0f); // Right Of Triangle (Back)
gl.glColor3f(1.0f,0.0f,0.0f); // Red
gl.glVertex3f( 0.0f, 1.0f, 0.0f); // Top Of Triangle (Left)
gl.glColor3f(0.0f,0.0f,1.0f); // Blue
gl.glVertex3f(-1.0f,-1.0f,-1.0f); // Left Of Triangle (Left)
gl.glColor3f(0.0f,1.0f,0.0f); // Green
gl.glVertex3f(-1.0f,-1.0f, 1.0f); // Right Of Triangle (Left)
gl.glColor3f(1.0f, 1.0f, 1.0f);
gl.glVertex3f( 1.0f,-1.0f, 1.0f); // Top Right (Bottom)
gl.glVertex3f(-1.0f,-1.0f, 1.0f); // Top Left (Bottom)
gl.glVertex3f(-1.0f,-1.0f,-1.0f); // Bottom (Bottom)
gl.glVertex3f( 1.0f,-1.0f,-1.0f);
gl.glEnd(); // Finished Drawing The Triangle
gl.glFlush();
xrot+=0.4f;
yrot+=0.4f;
zrot+=0.4f;
}
public void reshape(GLDrawable gLDrawable, int x, int y, int width, int height)
{
final GL gl = gLDrawable.getGL();
final GLU glu = gLDrawable.getGLU();
if (height <= 0) // avoid a divide by zero error!
height = 1;
final float h = (float)width / (float)height;
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluPerspective(45.0f, h, 1.0, 20.0);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
}
}
maybe anybody can give me a hint
