private void drawLine(int X1, int Y1, int X2, int Y2, float color[]) { GL11.glColor3f(color[0], color[1], color[2]); GL11.glBegin(GL11.GL_LINES); GL11.glVertex2f(X1, Y1); GL11.glVertex2f(X2, Y2); GL11.glEnd(); }
private void drawVecSlider() { drawQuad(screenWidth - 205, 0, 200, 205, colorArray[3]); drawQuad(screenWidth - 200, 5, 190, 195, colorArray[0]); drawQuad(screenWidth - 101, 70, 60, 2, colorArray[4]); drawQuad(screenWidth - 130, 99, 2, 60, colorArray[4]); GL11.glTranslatef(screenWidth - 100, 100, 0); drawCircle(vecSlider.x, vecSlider.y, 11, colorArray[2]); GL11.glLoadIdentity(); // drawCircle((sizeSliderVal*7) + 23, 30, 25, colorArray[2]); }
private void drawCircle(double x, double y, int radius, float color[], float alpha) { GL11.glColor4f(color[0], color[1], color[2], alpha); float incr = (float) (2 * Math.PI / slices); /*xCoord = xCoord + radius; yCoord = yCoord + radius;*/ GL11.glBegin(GL11.GL_TRIANGLE_FAN); for (int i = 0; i < slices; i++) { float angle = incr * i; float Xc = (float) (x + Math.cos(angle) * radius); float Yc = (float) (y + Math.sin(angle) * radius); GL11.glVertex2f(Xc, Yc); } GL11.glEnd(); }
static void drawTorus(float r, float R, int nsides, int rings) { float ringDelta = 2.0f * (float) Math.PI / rings; float sideDelta = 2.0f * (float) Math.PI / nsides; float theta = 0.0f, cosTheta = 1.0f, sinTheta = 0.0f; for (int i = rings - 1; i >= 0; i--) { float theta1 = theta + ringDelta; float cosTheta1 = (float) Math.cos(theta1); float sinTheta1 = (float) Math.sin(theta1); GL11.glBegin(GL11.GL_QUAD_STRIP); float phi = 0.0f; for (int j = nsides; j >= 0; j--) { phi += sideDelta; float cosPhi = (float) Math.cos(phi); float sinPhi = (float) Math.sin(phi); float dist = R + r * cosPhi; GL11.glNormal3f(cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi); GL11.glVertex3f(cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi); GL11.glNormal3f(cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi); GL11.glVertex3f(cosTheta * dist, -sinTheta * dist, r * sinPhi); } GL11.glEnd(); theta = theta1; cosTheta = cosTheta1; sinTheta = sinTheta1; } }
private void drawQuad(int x, int y, int h, int w, float color[], float alpha) { GL11.glColor4f(color[0], color[1], color[2], alpha); // draw quad GL11.glBegin(GL11.GL_QUADS); GL11.glVertex2f(x, y); GL11.glVertex2f(x + w, y); GL11.glVertex2f(x + w, y + h); GL11.glVertex2f(x, y + h); GL11.glEnd(); }
private void startDisplayLoop() { while (!Display.isCloseRequested()) { GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT); checkInput(); applyPhysics(); drawStuff(); endThisLoop(); } endProgram(); Display.destroy(); }
private void initGL(int width, int height) { try { // DisplayMode mode = new DisplayMode(width,height); // DisplayMode mode = Display.getDesktopDisplayMode(); Old code, for not-fullscreen stuff Display.setDisplayMode(Display.getDesktopDisplayMode()); Display.setFullscreen(true); Display.create(); Display.setVSyncEnabled(true); } catch (LWJGLException e) { System.out.println("Catched an error in intiGL"); e.printStackTrace(); System.exit(0); } // init OpenGL GL11.glMatrixMode(GL11.GL_PROJECTION); GL11.glLoadIdentity(); GL11.glOrtho(0, width, 0, height, 1, -1); GL11.glMatrixMode(GL11.GL_MODELVIEW); GL11.glEnable(GL11.GL_BLEND); GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA); }
public static void main(String[] args) { final Display display = new Display(); Shell shell = new Shell(display); shell.setLayout(new FillLayout()); Composite comp = new Composite(shell, SWT.NONE); comp.setLayout(new FillLayout()); GLData data = new GLData(); data.doubleBuffer = true; final GLCanvas canvas = new GLCanvas(comp, SWT.NONE, data); canvas.setCurrent(); try { GLContext.useContext(canvas); } catch (LWJGLException e) { e.printStackTrace(); } canvas.addListener( SWT.Resize, event -> { Rectangle bounds = canvas.getBounds(); float fAspect = (float) bounds.width / (float) bounds.height; canvas.setCurrent(); try { GLContext.useContext(canvas); } catch (LWJGLException e) { e.printStackTrace(); } GL11.glViewport(0, 0, bounds.width, bounds.height); GL11.glMatrixMode(GL11.GL_PROJECTION); GL11.glLoadIdentity(); GLU.gluPerspective(45.0f, fAspect, 0.5f, 400.0f); GL11.glMatrixMode(GL11.GL_MODELVIEW); GL11.glLoadIdentity(); }); GL11.glClearColor(1.0f, 1.0f, 1.0f, 1.0f); GL11.glColor3f(1.0f, 0.0f, 0.0f); GL11.glHint(GL11.GL_PERSPECTIVE_CORRECTION_HINT, GL11.GL_NICEST); GL11.glClearDepth(1.0); GL11.glLineWidth(2); GL11.glEnable(GL11.GL_DEPTH_TEST); shell.setText("SWT/LWJGL Example"); shell.setSize(640, 480); shell.open(); final Runnable run = new Runnable() { int rot = 0; @Override public void run() { if (!canvas.isDisposed()) { canvas.setCurrent(); try { GLContext.useContext(canvas); } catch (LWJGLException e) { e.printStackTrace(); } GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT); GL11.glClearColor(.3f, .5f, .8f, 1.0f); GL11.glLoadIdentity(); GL11.glTranslatef(0.0f, 0.0f, -10.0f); float frot = rot; GL11.glRotatef(0.15f * rot, 2.0f * frot, 10.0f * frot, 1.0f); GL11.glRotatef(0.3f * rot, 3.0f * frot, 1.0f * frot, 1.0f); rot++; GL11.glPolygonMode(GL11.GL_FRONT_AND_BACK, GL11.GL_LINE); GL11.glColor3f(0.9f, 0.9f, 0.9f); drawTorus(1, 1.9f + ((float) Math.sin((0.004f * frot))), 15, 15); canvas.swapBuffers(); display.asyncExec(this); } } }; canvas.addListener(SWT.Paint, event -> run.run()); display.asyncExec(run); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
private void endProgram() { GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT); System.exit(0); }