YOU CAN CODE!

 

With The Case Of UCanCode.net  Release The Power OF  Visual C++ !   Home Products | Purchase Support | Downloads  
View in English
View in Japanese
View in
참고
View in Français
View in Italiano
View in 中文(繁體)
Download Evaluation
Pricing & Purchase?
E-XD++Visual C++/ MFC Products
Overview
Features Tour 
Electronic Form Solution
Visualization & HMI Solution
Power system HMI Solution
CAD Drawing and Printing Solution

Bar code labeling Solution
Workflow Solution

Coal industry HMI Solution
Instrumentation Gauge Solution

Report Printing Solution
Graphical modeling Solution
GIS mapping solution

Visio graphics solution
Industrial control SCADA &HMI Solution
BPM business process Solution

Industrial monitoring Solution
Flowchart and diagramming Solution
Organization Diagram Solution

Graphic editor Source Code
UML drawing editor Source Code
Map Diagramming Solution

Architectural Graphic Drawing Solution
Request Evaluation
Purchase
VX++ Cross-Platform C/C++
Overview
Download
Purchase
ActiveX COM Products
Overview
Download
Purchase
Technical Support
  General Q & A
Discussion Board
Contact Us

Links

Get Ready to Unleash the Power of UCanCode .NET

C# Aircraft Instrument Control

1

The aim of this C# project is to purpose six aircraft cockpit instruments usable in forms as any other C# controls and to define a generic instrument class in order to design any kind of dashboard instruments.

2  

The controls are built with bitmaps which are rotated, translated or scaled before to be displayed. The basic methods for rotate, translate and scale images are defined in the mother class. Each control then uses its dedicated parameters (related to a physical signification) in order to manipulates the images.

Aircraft Instruments

  • Air speed indicator: airspeed (kts)
  • Attitude Indicator: pitch (deg), roll (deg)
  • Altimeter: altitude (ft)
  • Turn Coordinator: turn rate (deg/min)
  • Vertical speed indicator: vertical speed (ft/min)
  • Heading indicator: heading (deg)

3

This section explains in detail the implementation of the basic functions defined in the Instrument Control class.

Rotate Image

Implementation

The rotation of the image is divided in two main parts:

First, the rotation of the
PaintEventArgs coordinate system around the upper left corner of the drawing area.

Second, the drawing of the image corrected by translation offset in order to display the image as if it has turned around a user defined point.

AvionicsControlDemo_RotationMainSteps.JPG

Let’s see step by step:

Step 0: Initial situation.

AvionicsControlDemo_RotationPhase0.JPG

Step 1: Rotate the PaintEventArgs coordinate system around the left upper corner of the paint area.

AvionicsControlDemo_RotationPhase1.JPG

Corresponding code sample:

// Rotate image support
pe.Graphics.RotateTransform((float)(alpha * 180 / Math.PI));

Step 2: Draw the image and apply the translation correction.

AvionicsControlDemo_RotationPhase2.JPG

Corresponding code sample:

// Display image
pe.Graphics.DrawImage(img, (ptImg.X + deltaX) * scaleFactor, (ptImg.Y + deltaY) * 
	scaleFactor, img.Width * scaleFactor, img.Height * scaleFactor);

Step 3 (Final step): Put the PainEventArgs coordinate system as found.

AvionicsControlDemo_RotationPhase3.JPG

Corresponding code sample:

// Put image support as found
pe.Graphics.RotateTransform((float)(-alpha * 180 / Math.PI));

The key point in those operations is the calculation of the translation correction coefficients.

The next figure explains the geometrics considerations:

AvionicsControlDemo_RotationDetailedScheme.JPG

G0 is the user defined rotation center
G1 is the G0 position after the step 1.

The aim of this section is to identify the G1G0 translation and apply the corresponding offset in order to draw the rotation point as if it has not moved.

Then we work with the geometrics definitions:

a. AvionicsControlDemo_RotationCalcs1.JPG
b. AvionicsControlDemo_RotationCalcs2.JPG
c. AvionicsControlDemo_RotationCalcs3.JPG
d. AvionicsControlDemo_RotationCalcs4.JPG

As a result, the offset coefficients are:

AvionicsControlDemo_RotationCalcs5.JPG

The corresponding code sample is as follows:

// Computed offset
deltaX = (float)(d * (Math.Cos(alpha - beta) - Math.Cos(alpha)* 
	Math.Cos(alpha + beta) - Math.Sin(alpha) * Math.Sin(alpha+ beta)));
deltaY = (float)(d * (Math.Sin(beta - alpha) + Math.Sin(alpha)* 
	Math.Cos(alpha + beta) - Math.Cos(alpha) * Math.Sin(alpha + beta)));

Parameters

  • "pe": The paint area event where the image will be displayed
  • "img": The image to display
  • "alpha": The angle of rotation in radian
  • "ptImg": The location of the left upper corner of the image to display in the paint area in nominal situation
  • "ptRot": The location of the rotation point in the paint area
  • "scaleFactor": Multiplication factor on the display image

AvionicsControlDemo_RotationFunctionParameters.JPG

News:

1 UCanCode Advance E-XD++ CAD Drawing and Printing Solution Source Code Solution for C/C++, .NET V2024 is released!

2 UCanCode Advance E-XD++ HMI & SCADA Source Code Solution for C/C++, .NET V2024 is released!

3 UCanCode Advance E-XD++ GIS SVG Drawing and Printing Solution Source Code Solution for C/C++, .NET V2024 is released!


Contact UCanCode Software

To buy the source code or learn more about with:

 

 

Ask any questions by MSN: UCanCode@hotmail.com Yahoo: ucan_code@yahoo.com


 

Copyright ?1998-2024 UCanCode.Net Software , all rights reserved.
Other product and company names herein may be the trademarks of their respective owners.

Please direct your questions or comments to webmaster@UCanCode.net