/// <summary> /// Draws all the physics bodies and UI elements. /// </summary> private unsafe void DrawFrame(TimeStep timeStep, FpsManager frameTimer) { var font = new Font("Verdana Bold", 14); var brush = new SolidBrush(Color.White); RectangleD cameraBounds = _camera.GetBounds(); IGravitationalBody target = _gravitationalBodies[_targetIndex]; var targetSpaceCraft = target as SpaceCraftBase; // If openCL is supported render all cl bodies if (_renderingType == RenderingType.OpenCLHardware || _renderingType == RenderingType.OpenCLSoftware) { _gpuClear.RenderCl(_clProxy); foreach (MassiveBodyBase renderable in _massiveBodies) { if (renderable.Visibility(cameraBounds) > 0) { renderable.RenderCl(_clProxy, cameraBounds, _sun); } } int[] frameData = _clProxy.ReadIntBuffer("image", RenderUtils.ScreenArea); var rect = new Rectangle(0, 0, _imageBitmap.Width, _imageBitmap.Height); BitmapData bmpData = _imageBitmap.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb); Marshal.Copy(frameData, 0, bmpData.Scan0, RenderUtils.ScreenArea); var ptr = (byte*)bmpData.Scan0; // Hack to force full alpha for now for (int i = 0; i < RenderUtils.ScreenArea; i++) { ptr[i * 4 + 3] = 255; } _imageBitmap.UnlockBits(bmpData); } else { // Fall back to gdi for cl renderables using (var graphics = Graphics.FromImage(_imageBitmap)) { graphics.Clear(Color.Black); foreach (MassiveBodyBase renderable in _massiveBodies) { if (renderable.Visibility(cameraBounds) > 0) { renderable.RenderGdiFallback(graphics, cameraBounds, _sun); } } } } // Draw all orbit traces, spacecrafts, and GDI objects using (Graphics graphics = RenderUtils.GetContext(false, _imageBitmap)) { RenderUtils.DrawLine(graphics, cameraBounds, new DVector2(0, -10e12), new DVector2(0, 10e12), Color.FromArgb(40, 255, 255, 255)); RenderUtils.DrawLine(graphics, cameraBounds, new DVector2(-10e12, 0), new DVector2(10e12, 0), Color.FromArgb(40, 255, 255, 255)); // Draw all massive body orbit traces foreach (MassiveBodyBase massiveBody in _massiveBodies) { if (massiveBody is Sun) continue; massiveBody.RenderGdi(graphics, cameraBounds); } // Draw spacecraft foreach (SpaceCraftBase spaceCraft in _spaceCrafts) { spaceCraft.RenderGdi(graphics, cameraBounds); } // Draw structures foreach (StructureBase structure in _structures) { structure.RenderGdi(graphics, cameraBounds); } } // Draw all GUI elements (higher quality) using (Graphics graphics = RenderUtils.GetContext(true, _imageBitmap)) { double throttle = 0; if (targetSpaceCraft != null) { throttle = targetSpaceCraft.Throttle; } foreach (IGauge gauge in _gauges) { if (targetSpaceCraft != null) { gauge.Update(_gravitationalBodies[_targetIndex].Pitch, throttle / 100.0); } gauge.Render(graphics, cameraBounds); } _eventManager.Render(graphics); var elapsedTime = TimeSpan.FromSeconds(_totalElapsedSeconds - ClockDelayInSeconds); int elapsedYears = elapsedTime.Days / 365; int elapsedDays = elapsedTime.Days % 365; graphics.DrawString("Elapsed Time: " + string.Format("Y: {0} D: {1} H: {2} M: {3} S: {4}", elapsedYears, elapsedDays, elapsedTime.Hours, elapsedTime.Minutes, elapsedTime.Seconds), font, brush, 5, 5); graphics.DrawString("Update Speed: " + timeStep.Multiplier + " X", font, brush, 5, 35); double altitude = target.GetRelativeAltitude(); graphics.DrawString("Altitude: " + UnitDisplay.Distance(altitude), font, brush, 5, 90); graphics.DrawString(string.Format("Target: {0}", target), font, brush, RenderUtils.ScreenWidth / 2.0f, 5, new StringFormat { Alignment = StringAlignment.Center }); double targetVelocity = target.GetRelativeVelocity().Length(); graphics.DrawString("Relative Speed: " + UnitDisplay.Speed(targetVelocity, false), font, brush, 5, 175); graphics.DrawString("Relative Acceleration: " + UnitDisplay.Acceleration(target.GetRelativeAcceleration().Length()), font, brush, 5, 205); if (!(target is Sun)) { graphics.DrawString("Apogee: " + UnitDisplay.Distance(target.Apogee), font, brush, 5, 455); graphics.DrawString("Perigee: " + UnitDisplay.Distance(target.Perigee), font, brush, 5, 485); } graphics.DrawString("Mass: " + UnitDisplay.Mass(target.Mass), font, brush, 5, 290); if (targetSpaceCraft != null) { double alpha = targetSpaceCraft.GetAlpha(); graphics.DrawString("Angle of Attack: " + UnitDisplay.Degrees(alpha), font, brush, 5, 235); double downrangeDistance = targetSpaceCraft.GetDownrangeDistance(_structures[0].Position); graphics.DrawString("Downrange: " + UnitDisplay.Distance(downrangeDistance), font, brush, 5, 120); graphics.DrawString("Thrust: " + UnitDisplay.Force(targetSpaceCraft.Thrust), font, brush, 5, 320); DVector2 dragForce = targetSpaceCraft.AccelerationD * targetSpaceCraft.Mass; DVector2 liftForce = targetSpaceCraft.AccelerationL * targetSpaceCraft.Mass * Math.Cos(targetSpaceCraft.Roll); DVector2 turnForce = targetSpaceCraft.AccelerationL * targetSpaceCraft.Mass * Math.Sin(targetSpaceCraft.Roll); graphics.DrawString("Drag: " + UnitDisplay.Force(dragForce.Length()), font, brush, 5, 350); graphics.DrawString("Lift: " + UnitDisplay.Force(liftForce.Length()), font, brush, 5, 380); graphics.DrawString("Turn: " + UnitDisplay.Force(turnForce.Length()), font, brush, 5, 410); double density = targetSpaceCraft.GravitationalParent.GetAtmosphericDensity(altitude); graphics.DrawString("Air Density: " + UnitDisplay.Density(density), font, brush, 5, 535); double dynamicPressure = 0.5 * density * targetVelocity * targetVelocity; graphics.DrawString("Dynamic Pressure: " + UnitDisplay.Pressure(dynamicPressure), font, brush, 5, 565); graphics.DrawString("Heating Rate: " + UnitDisplay.Heat(targetSpaceCraft.HeatingRate), font, brush, 5, 595); } graphics.DrawString("FPS: " + frameTimer.CurrentFps, font, brush, RenderUtils.ScreenWidth - 80, 5); } }
/// <summary> /// Main game loop - update - draw - sleep /// </summary> private void GameLoop() { var frameTimer = new FpsManager(60); while (_isActive) { frameTimer.StartFrame(); TimeStep timeStep = _timeSteps[_timeStepIndex]; Update(timeStep); DrawFrame(timeStep, frameTimer); WriteFrameToScreen(); frameTimer.FinishFrame(); } }
/// <summary> /// Draws all the physics bodies and UI elements. /// </summary> private unsafe void DrawFrame(TimeStep timeStep, FpsManager frameTimer) { var font = new Font("Verdana Bold", 14); var brush = new SolidBrush(Color.White); RectangleD cameraBounds = _camera.GetBounds(); IGravitationalBody target = _gravitationalBodies[_targetIndex]; var targetSpaceCraft = target as ISpaceCraft; // If openCL is supported render all cl bodies if (_renderingType == RenderingType.OpenCLHardware || _renderingType == RenderingType.OpenCLSoftware) { _gpuClear.RenderCl(_clProxy); foreach (MassiveBodyBase renderable in _massiveBodies) { if (renderable.Visibility(cameraBounds) > 0) { renderable.RenderCl(_clProxy, cameraBounds, _sun); } } int[] frameData = _clProxy.ReadIntBuffer("image", RenderUtils.ScreenArea); var rect = new Rectangle(0, 0, _imageBitmap.Width, _imageBitmap.Height); BitmapData bmpData = _imageBitmap.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb); Marshal.Copy(frameData, 0, bmpData.Scan0, RenderUtils.ScreenArea); var ptr = (byte*)bmpData.Scan0; // Hack to force full alpha for now for (int i = 0; i < RenderUtils.ScreenArea; i++) { ptr[i * 4 + 3] = 255; } _imageBitmap.UnlockBits(bmpData); } else { // Fall back to gdi for cl renderables using (var graphics = Graphics.FromImage(_imageBitmap)) { graphics.Clear(Color.Black); foreach (MassiveBodyBase renderable in _massiveBodies) { if (renderable.Visibility(cameraBounds) > 0) { renderable.RenderGdiFallback(graphics, cameraBounds, _sun); } } } } // Draw all orbit traces, spacecrafts, and GDI objects using (var graphics = Graphics.FromImage(_imageBitmap)) { graphics.SmoothingMode = SmoothingMode.HighSpeed; graphics.PixelOffsetMode = PixelOffsetMode.HighSpeed; graphics.CompositingQuality = CompositingQuality.HighSpeed; graphics.InterpolationMode = InterpolationMode.NearestNeighbor; RenderUtils.DrawLine(graphics, cameraBounds, new DVector2(0, -10e12), new DVector2(0, 10e12), Color.FromArgb(40, 255, 255, 255)); RenderUtils.DrawLine(graphics, cameraBounds, new DVector2(-10e12, 0), new DVector2(10e12, 0), Color.FromArgb(40, 255, 255, 255)); double apogee = 0; double perigee = 0; // Draw orbit traces foreach (MassiveBodyBase massiveBody in _massiveBodies) { if (massiveBody is Sun) continue; OrbitTrace trace = OrbitHelper.TraceMassiveBody(massiveBody); if (target == massiveBody) { apogee = trace.Apogee; perigee = trace.Perigee; } trace.Draw(graphics, cameraBounds, massiveBody); } // Draw structures foreach (StructureBase structure in _structures) { structure.RenderGdi(graphics, cameraBounds); } // Draw spacecraft foreach (SpaceCraftBase spaceCraft in _spaceCrafts) { if (spaceCraft.Visibility(cameraBounds) > 0) { RectangleD bounds = spaceCraft.ComputeBoundingBox(); // In range for render if (cameraBounds.IntersectsWith(bounds)) { spaceCraft.RenderGdi(graphics, cameraBounds); } } if (spaceCraft.Parent != null) continue; OrbitTrace trace = OrbitHelper.TraceSpaceCraft(spaceCraft); if (target == spaceCraft) { apogee = trace.Apogee; perigee = trace.Perigee; } trace.Draw(graphics, cameraBounds, spaceCraft); } var elapsedTime = TimeSpan.FromSeconds(_totalElapsedSeconds); int elapsedYears = elapsedTime.Days / 365; int elapsedDays = elapsedTime.Days % 365; graphics.DrawString("Elapsed Time: " + string.Format("Y: {0} D: {1} H: {2} M: {3} S: {4}", elapsedYears, elapsedDays, elapsedTime.Hours, elapsedTime.Minutes, elapsedTime.Seconds), font, brush, 5, 5); graphics.DrawString("Update Speed: " + timeStep.Multiplier + " X", font, brush, 5, 35); double altitude = target.GetRelativeAltitude(); graphics.DrawString("Altitude: " + UnitDisplay.Distance(altitude), font, brush, 5, 100); graphics.DrawString(string.Format("Target: {0}", target), font, brush, RenderUtils.ScreenWidth / 2 - 35, 5); graphics.DrawString("Relative Speed: " + UnitDisplay.Speed(target.GetRelativeVelocity().Length()), font, brush, 5, 225); graphics.DrawString("Relative Acceleration: " + UnitDisplay.Acceleration(target.GetRelativeAcceleration().Length()), font, brush, 5, 255); graphics.DrawString("Apogee: " + UnitDisplay.Distance(apogee), font, brush, 5, 320); graphics.DrawString("Perigee: " + UnitDisplay.Distance(perigee), font, brush, 5, 350); graphics.DrawString("Mass: " + UnitDisplay.Mass(target.Mass), font, brush, 5, 410); if (targetSpaceCraft != null) { graphics.DrawString("Thrust: " + UnitDisplay.Force(targetSpaceCraft.Thrust), font, brush, 5, 440); double downrangeDistance = targetSpaceCraft.GetDownrangeDistance(_strongback.Position); graphics.DrawString("Downrange: " + UnitDisplay.Distance(downrangeDistance), font, brush, 5, 130); double density = targetSpaceCraft.GravitationalParent.GetAtmosphericDensity(altitude); graphics.DrawString("Air Density: " + UnitDisplay.Density(density), font, brush, 5, 160); } graphics.DrawString("FPS: " + frameTimer.CurrentFps, font, brush, RenderUtils.ScreenWidth - 80, 5); } // Draw all GUI elements (higher quality) using (var graphics = Graphics.FromImage(_imageBitmap)) { graphics.SmoothingMode = SmoothingMode.HighQuality; double throttle = 0; if (targetSpaceCraft != null) { var throttleValues = new List<double>(); targetSpaceCraft.SumTotalThrottle(throttleValues); if (throttleValues.Count > 0) { throttle = throttleValues.Average(); } } foreach (IGauge gauge in _gauges) { if (targetSpaceCraft != null) { gauge.Update(_gravitationalBodies[_targetIndex].Rotation, throttle / 100.0); } gauge.Render(graphics, cameraBounds); } } }