Difference between revisions of "C++:Programming Tutorial"

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(New page: An introduction to computer programming using Java. Comprising * Tutorials which present problems and their solutions. * How to... guides to completing common task...)
 
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An introduction to computer programming using Java. Comprising
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==An Example: drawing the French tricolour ==
*[[Tutorials| Tutorials]] which present problems and their solutions.
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You can create images using C++ and the Image Magic Library. The first tutorial [[Flags]] looks at drawing flags of the world, from simple flags such as Libya to more complicated flags such as the Stars and Stripes of the USA.  
*[[Guides| How to...]] guides to completing common tasks.
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<question height="100" width="150" imgOut="flag.png" className="Raster" title="France" rows="9" cols="40" lang="cpp">
*[[Assessments| Assessments]] graded problems with solutions.
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<shell lang="cpp" import="shells.xml#rastercpp"/>
==Drawing the French tricolour with Java==  
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You can create images using Java. The first tutorial [[Flags]] looks at drawing flags of the world, from simple flags such as Libya to more complicated flags such as the Stars and Stripes of the USA. In Java you can use [[methods]] such as  <code>[[setColor]]</code> and <code>[[fillRect]]</code> to create simple images.         
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<question height="100" width="150" imgOut="flag.png" className="Raster" title="France" rows="9" cols='28'>  
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[[Image:Flag_guide_france.png|border|right]]
 
[[Image:Flag_guide_france.png|border|right]]
 
Notice that the blue rectangle is at (0,0), it is 50 wide and 100 deep so the commands to draw the blue rectangle are:     
 
Notice that the blue rectangle is at (0,0), it is 50 wide and 100 deep so the commands to draw the blue rectangle are:     
g.setColor(Color.blue);
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  g.fillColor("blue");
g.fillRect(0,0,50,100);
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  g.draw(DrawableRectangle(0,0,50,100));
<shell lang="java" className="Flag" import="shells.xml#raster"/>
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<prog lang="cpp">int drawFlag(Image&amp; g){
<prog lang="java">static void drawFlag(Graphics2D g){
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   g.fillColor("blue");
   g.setColor(Color.blue);
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   g.draw(DrawableRectangle(0,0,50,100));
   g.fillRect(0,0,50,100);
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   g.fillColor("white");
   g.setColor(Color.white);
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   g.draw(DrawableRectangle(50,100,50,100));
   g.fillRect(50,0,50,100);
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   g.fillColor("red");
   g.setColor(Color.red);
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   g.draw(DrawableRectangle(100,0,150,100));
   g.fillRect(100,0,50,100);
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  return 0;
 
}
 
}
 
</prog>
 
</prog>
<answer lang="java">static void drawFlag(Graphics2D g){
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<answer lang="cpp">int drawFlag(Image&amp; g){
   g.setColor(Color.blue);
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   g.fillColor("blue");
   g.fillRect(0,0,50,100);
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   g.draw(DrawableRectangle(0,0,50,100));
   g.setColor(Color.white);
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   g.fillColor("white");
   g.fillRect(50,0,50,100);
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   g.draw(DrawableRectangle(50,100,50,100));
   g.setColor(Color.red);
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   g.fillColor("red");
   g.fillRect(100,0,50,100);
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   g.draw(DrawableRectangle(100,0,150,100));
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  return 0;
 
}
 
}
 
</answer>
 
</answer>

Revision as of 22:54, 30 December 2007

An Example: drawing the French tricolour

You can create images using C++ and the Image Magic Library. The first tutorial Flags looks at drawing flags of the world, from simple flags such as Libya to more complicated flags such as the Stars and Stripes of the USA.

Flag guide france.png

Notice that the blue rectangle is at (0,0), it is 50 wide and 100 deep so the commands to draw the blue rectangle are:

 g.fillColor("blue");
 g.draw(DrawableRectangle(0,0,50,100));


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