/**
* Implement stereo using the stereo-enabled graphics device. The mode has an effect only if the
* display device implements stereo.
*
* @param dc the current draw context.
*/
protected void doDrawToStereoDevice(DrawContext dc) {
GL2 gl = dc.getGL().getGL2(); // GL initialization checks for GL2 compatibility.
View dcView = dc.getView();
// Draw the left eye
if (this.isSwapEyes()) gl.glDrawBuffer(GL2.GL_BACK_RIGHT);
else gl.glDrawBuffer(GL2.GL_BACK_LEFT);
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
super.draw(dc);
// Move the view to the right eye
Angle viewHeading = dcView.getHeading();
dcView.setHeading(dcView.getHeading().subtract(this.getFocusAngle()));
dcView.apply(dc);
// Draw the right eye
try {
if (this.isSwapEyes()) gl.glDrawBuffer(GL2.GL_BACK_LEFT);
else gl.glDrawBuffer(GL2.GL_BACK_RIGHT);
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
super.draw(dc);
} finally {
// Restore the original view heading
dcView.setHeading(viewHeading);
dcView.apply(dc);
}
}
/**
* Implement no stereo ("Mono") while using a stereo device.
*
* <p>Note that this method draws the image twice, once to each of the left and right eye buffers,
* even when stereo is not in effect. This is to prevent the stereo device from drawing blurred
* scenes.
*
* @param dc the current draw context.
*/
protected void doDrawStereoNone(DrawContext dc) {
// If running on a stereo device but want to draw a normal image, both buffers must be filled or
// the
// display will be blurry.
GL2 gl = dc.getGL().getGL2(); // GL initialization checks for GL2 compatibility.
gl.glDrawBuffer(GL2.GL_BACK_LEFT);
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
super.draw(dc);
gl.glDrawBuffer(GL2.GL_BACK_RIGHT);
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
super.draw(dc);
}
@Override
public void display(GLAutoDrawable gLDrawable) {
final GL2 gl = gLDrawable.getGL().getGL2();
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
gl.glClear(GL.GL_DEPTH_BUFFER_BIT);
gl.glLoadIdentity();
gl.glTranslatef(0.0f, 0.0f, -5.0f);
// rotate about the three axes
gl.glRotatef(rotateT, 1.0f, 0.0f, 0.0f);
gl.glRotatef(rotateT, 0.0f, 1.0f, 0.0f);
gl.glRotatef(rotateT, 0.0f, 0.0f, 1.0f);
// Draw A Quad
gl.glBegin(GL2.GL_QUADS);
gl.glColor3f(0.0f, 1.0f, 1.0f); // set the color of the quad
gl.glVertex3f(-1.0f, 1.0f, 0.0f); // Top Left
gl.glVertex3f(1.0f, 1.0f, 0.0f); // Top Right
gl.glVertex3f(1.0f, -1.0f, 0.0f); // Bottom Right
gl.glVertex3f(-1.0f, -1.0f, 0.0f); // Bottom Left
// Done Drawing The Quad
gl.glEnd();
// increasing rotation for the next iteration
rotateT += 0.2f;
}
public void display(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
//
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
gl.glPushMatrix();
gl.glRotatef(20.0f, 1.0f, 0.0f, 0.0f);
gl.glPushMatrix();
gl.glTranslatef(-0.75f, 0.5f, 0.0f);
gl.glRotatef(90.0f, 1.0f, 0.0f, 0.0f);
glut.glutSolidTorus(0.275f, 0.85f, 20, 20);
gl.glPopMatrix();
gl.glPushMatrix();
gl.glTranslatef(-0.75f, -0.5f, 0.0f);
gl.glRotatef(270.0f, 1.0f, 0.0f, 0.0f);
glut.glutSolidCone(1.0f, 2.0f, 20, 20);
gl.glPopMatrix();
gl.glPushMatrix();
gl.glTranslatef(0.75f, 0.0f, -1.0f);
glut.glutSolidSphere(1.0f, 20, 20);
gl.glPopMatrix();
gl.glPopMatrix();
gl.glFlush();
}
public void display(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
//
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
if (derefMethod == DRAWARRAY) {
gl.glDrawArrays(GL2.GL_TRIANGLES, 0, 6);
} else if (derefMethod == ARRAYELEMENT) {
gl.glBegin(GL2.GL_TRIANGLES);
gl.glArrayElement(2);
gl.glArrayElement(3);
gl.glArrayElement(5);
gl.glEnd();
} else if (derefMethod == DRAWELEMENTS) {
int indices[] = new int[] {0, 1, 3, 4};
if (indicesBuf == null) {
indicesBuf = GLBuffers.newDirectIntBuffer(indices.length);
indicesBuf.put(indices);
}
indicesBuf.rewind();
gl.glDrawElements(GL2.GL_POLYGON, 4, GL2.GL_UNSIGNED_INT, indicesBuf);
}
gl.glFlush();
// gl calls from C example's mouse routine are moved here
if (setupMethod == INTERLEAVED) setupInterleave(gl);
else if (setupMethod == POINTER) setupPointers(gl);
}
public void init(GLAutoDrawable drawable) {
drawable.setGL(new DebugGL2(drawable.getGL().getGL2()));
final GL2 gl = drawable.getGL().getGL2();
// drawable.getGL().getGL2();
gl.glViewport(0, 0, SCREENW, SCREENH);
// Clear color buffer with black
// gl.glClearColor(1.0f, 0.5f, 1.0f, 1.0f);
gl.glClearColor(.0f, .0f, .0f, 1.0f);
gl.glClearDepth(1.0f);
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
gl.glEnable(GL2.GL_DEPTH_TEST);
gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
gl.glCreateShader(GL2GL3.GL_VERTEX_SHADER);
shader.init(gl);
int programName = shader.getID();
gl.glBindAttribLocation(programName, Object3D.VERTEXPOSITION, "inposition");
gl.glBindAttribLocation(programName, Object3D.VERTEXCOLOR, "incolor");
gl.glBindAttribLocation(programName, Object3D.VERTEXNORMAL, "innormal");
gl.glBindAttribLocation(programName, Object3D.VERTEXTEXCOORD0, "intexcoord0");
shader.link(gl);
uniformMat = gl.glGetUniformLocation(programName, "mat");
uniformLight = gl.glGetUniformLocation(programName, "lightdir");
gl.glUseProgram(programName);
gl.glUniform3f(uniformLight, 0f, 10f, -10f);
obj.init(gl, mats, programName);
gl.glUseProgram(0);
}
public void display(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
//
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
gl.glColor3f(1.0f, 1.0f, 1.0f);
gl.glCallList(startList);
gl.glCallList(startList + 1);
gl.glFlush();
}
/**
* Implement stereo using the red-blue anaglyph technique.
*
* @param dc the current draw context.
*/
protected void doDrawStereoRedBlue(DrawContext dc) {
GL2 gl = dc.getGL().getGL2(); // GL initialization checks for GL2 compatibility.
View dcView = dc.getView();
// Draw the left eye
if (this.isSwapEyes()) {
if (this.isHardwareStereo()) gl.glDrawBuffer(GL2.GL_BACK_RIGHT);
gl.glColorMask(false, true, true, true); // right eye in green/blue
} else {
if (this.isHardwareStereo()) gl.glDrawBuffer(GL2.GL_BACK_LEFT);
gl.glColorMask(true, false, false, true); // left eye in red only
}
if (this.isHardwareStereo()) gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
super.draw(dc);
// Move the view to the right eye
Angle viewHeading = dcView.getHeading();
dcView.setHeading(dcView.getHeading().subtract(this.getFocusAngle()));
dcView.apply(dc);
// Draw the right eye frame green and blue only
try {
gl.glClear(GL.GL_DEPTH_BUFFER_BIT);
if (this.isSwapEyes()) {
if (this.isHardwareStereo()) gl.glDrawBuffer(GL2.GL_BACK_RIGHT);
gl.glColorMask(true, false, false, true); // right eye in red only
} else {
if (this.isHardwareStereo()) gl.glDrawBuffer(GL2.GL_BACK_LEFT);
gl.glColorMask(false, true, true, true); // right eye in green/blue
}
if (this.isHardwareStereo()) gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
super.draw(dc);
} finally {
// Restore the original view heading
dcView.setHeading(viewHeading);
dcView.apply(dc);
gl.glColorMask(true, true, true, true);
}
}
@Override
public void display(GLAutoDrawable glAutoDrawable) {
gl = glAutoDrawable.getGL().getGL2();
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
// Fonts draw selves at the current raster position
gl.glRasterPos2f(right - (right + 2.0f), bottom + 1);
caption = "Please wait... drawing frames";
glut.glutBitmapString(GLUT.BITMAP_HELVETICA_18, caption);
drawByLevel();
gl.glFlush();
}
public void display(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
//
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
gl.glPushMatrix();
gl.glRotatef(45.0f, 0.0f, 0.0f, 1.0f);
gl.glTexGeni(GL2.GL_S, GL2.GL_TEXTURE_GEN_MODE, currentGenMode);
gl.glTexGendv(GL2.GL_S, currentPlane, currentCoeff, 0);
gl.glBindTexture(GL2.GL_TEXTURE_1D, texName[0]);
glut.glutSolidTeapot(2.0f);
gl.glPopMatrix();
gl.glFlush();
}
/*
* display() draws 5 teapots at different z positions.
*/
public void display(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
//
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
//
if (fogMode == GL2.GL_EXP2) {
gl.glFogf(GL2.GL_FOG_START, 1.0f);
gl.glFogf(GL2.GL_FOG_END, 5.0f);
}
gl.glFogi(GL2.GL_FOG_MODE, fogMode);
renderRedTeapot(gl, -4.0f, -0.5f, -1.0f);
renderRedTeapot(gl, -2.0f, -0.5f, -2.0f);
renderRedTeapot(gl, 0.0f, -0.5f, -3.0f);
renderRedTeapot(gl, 2.0f, -0.5f, -4.0f);
renderRedTeapot(gl, 4.0f, -0.5f, -5.0f);
gl.glFlush();
}
public void display(GLAutoDrawable drawable) {
final GL2 gl = drawable.getGL().getGL2();
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
mats.glMatrixMode(GL2.GL_MODELVIEW);
mats.glLoadIdentity();
mats.glTranslatef(0f, 0f, -2.0f);
// t = t+0.5f;
t = 40f;
mats.glRotatef(t, 0f, 1f, 0f);
mats.glMatrixMode(GL2.GL_PROJECTION);
mats.glLoadIdentity();
mats.glFrustumf(-1f, 1f, -1f, 1f, 1f, 100f);
mats.update();
gl.glUseProgram(shader.getID());
gl.glUniformMatrix4fv(uniformMat, 3, false, mats.glGetPMvMviMatrixf());
obj.display(gl, mats);
gl.glFlush();
gl.glUseProgram(0);
}
public void draw() {
// Clear GL state
gl.glDisable(GL_LIGHTING);
gl.glDisable(GL_DEPTH);
gl.glMatrixMode(GL_MODELVIEW);
gl.glPushMatrix();
gl.glLoadIdentity();
gl.glMatrixMode(GL_PROJECTION);
gl.glPushMatrix();
gl.glLoadIdentity();
gl.glClearColor(0.8f, 0.2f, 0.2f, 1.0f);
gl.glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
gl.glPointSize(1.0f);
// Set the viewport
glu.gluOrtho2D(xMin, xMax, yMin, yMax);
gl.glBegin(GL_POINTS);
for (int x = (int) (xMin); x < xMax; x++)
for (int y = (int) (yMin); y < yMax; y++) {
gl.glColor3d(viewPort[x][y].r, viewPort[x][y].g, viewPort[x][y].b);
gl.glVertex2d(x + 0.5, y + 0.5);
}
gl.glEnd();
// Restore state
gl.glMatrixMode(GL_MODELVIEW);
gl.glPopMatrix();
gl.glMatrixMode(GL_PROJECTION);
gl.glPopMatrix();
gl.glEnable(GL_LIGHTING);
gl.glEnable(GL_DEPTH);
}
/*
* display() draws a triangle at an angle.
*/
public void display(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
//
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
if (key != null)
switch (key.getKeyChar()) {
case 'c':
gl.glFogi(GL2.GL_FOG_COORDINATE_SOURCE, GL2.GL_FRAGMENT_DEPTH);
break;
case 'C':
gl.glFogi(GL2.GL_FOG_COORDINATE_SOURCE, GL2.GL_FOG_COORDINATE);
break;
case 'b':
gl.glMatrixMode(GL2.GL_MODELVIEW);
gl.glTranslatef(0.0f, 0.0f, -0.25f);
break;
case 'f':
gl.glMatrixMode(GL2.GL_MODELVIEW);
gl.glTranslatef(0.0f, 0.0f, 0.25f);
break;
default:
break;
}
gl.glColor3f(1.0f, 0.75f, 0.0f);
gl.glBegin(GL2.GL_TRIANGLES);
gl.glFogCoordf(f1);
gl.glVertex3f(2.0f, -2.0f, 0.0f);
gl.glFogCoordf(f2);
gl.glVertex3f(-2.0f, 0.0f, -5.0f);
gl.glFogCoordf(f3);
gl.glVertex3f(0.0f, 2.0f, -10.0f);
gl.glEnd();
gl.glFlush();
}
protected void drawThis(GL2 gl) {
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
configureGL(gl);
tunnel.draw(gl, distortion);
field.draw(gl);
}
/** Called back by the animator to perform rendering. */
@Override
public void display(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2(); // get the OpenGL 2 graphics context
gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear color and depth buffers
for (int i = 0; i < stars.length; i++) {
// Reset the view (x, y, z axes back to normal)
gl.glLoadIdentity();
gl.glTranslatef(0.0f, 0.0f, z);
// The stars are texture quad square drawn on x-y plane and
// distributed on on x-z plane around the y-axis
// Initial 90 degree tile in the x-axis, y-axis pointing out of screen
gl.glRotatef(tilt, 1.0f, 0.0f, 0.0f);
// Rotate about y-axis (pointing out of screen), initial angle is 0
gl.glRotatef(stars[i].angle, 0.0f, 1.0f, 0.0f);
// Translate about the x-axis (pointing right) to its current distance
gl.glTranslatef(stars[i].distance, 0.0f, 0.0f);
// The stars have initial angle of 0, and initial distance linearly
// distributed between 0 and 5.0f
// Rotate the axes back, so that z-axis is again facing us, to ensure that
// the quad (with texture) on x-y plane is facing us
gl.glRotatef(-stars[i].angle, 0.0f, 1.0f, 0.0f);
gl.glRotatef(-tilt, 1.0f, 0.0f, 0.0f);
// Take note that without the two rotations and undo, there is only one
// translation along the x-axis
// Matrix operation is non-commutative. That is, AB != BA.
// Hence, ABCB'A' != C
// Draw the star, which spins on the z axis (pointing out of the screen)
gl.glRotatef(starSpinAngle, 0.0f, 0.0f, 1.0f);
// Set the star's color using bytes (why bytes? not float or int?)
gl.glColor4ub(stars[i].r, stars[i].g, stars[i].b, (byte) 255);
gl.glBegin(GL_QUADS);
// draw a square on x-y plane
gl.glTexCoord2f(textureCoordLeft, textureCoordBottom);
gl.glVertex3f(-1.0f, -1.0f, 0.0f);
gl.glTexCoord2f(textureCoordRight, textureCoordBottom);
gl.glVertex3f(1.0f, -1.0f, 0.0f);
gl.glTexCoord2f(textureCoordRight, textureCoordTop);
gl.glVertex3f(1.0f, 1.0f, 0.0f);
gl.glTexCoord2f(textureCoordLeft, textureCoordTop);
gl.glVertex3f(-1.0f, 1.0f, 0.0f);
gl.glEnd();
// If twinkling, overlay with another drawing of an arbitrary color
if (twinkleOn) {
// Assign a color using bytes
gl.glColor4ub(
stars[(numStars - i) - 1].r,
stars[(numStars - i) - 1].g,
stars[(numStars - i) - 1].b,
(byte) 255);
gl.glBegin(GL_QUADS);
// draw a square on x-y plane
gl.glTexCoord2f(textureCoordLeft, textureCoordBottom);
gl.glVertex3f(-1.0f, -1.0f, 0.0f);
gl.glTexCoord2f(textureCoordRight, textureCoordBottom);
gl.glVertex3f(1.0f, -1.0f, 0.0f);
gl.glTexCoord2f(textureCoordRight, textureCoordTop);
gl.glVertex3f(1.0f, 1.0f, 0.0f);
gl.glTexCoord2f(textureCoordLeft, textureCoordTop);
gl.glVertex3f(-1.0f, 1.0f, 0.0f);
gl.glEnd();
}
// Update for the next refresh
// The star spins about the z-axis (pointing out of the screen), and spiral
// inwards and collapse towards the center, by increasing the angle on x-y
// plane and reducing the distance.
starSpinAngle += 0.01f; // used to spin the stars about the z-axis
// spiral pattern
stars[i].angle += (float) i / numStars; // changes the angle of a star
// collapsing the star to the center
stars[i].distance -= 0.01f; // changes the distance of a star
// re-bone at the edge
if (stars[i].distance < 0.0f) { // Is the star collapsed to the center?
stars[i].distance += 5.0f; // move to the outer ring
stars[i].setRandomRGB(); // choose a random color for the star
}
}
}
