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Canvas

pjesh (9)
Hey guys, I'm creating a program that essentially consist of a Canvas class that displays shapes (Rectangle & Square) inside it. The issue I have is, I can't seem to have a picture of how it suppose to display on the command prompt. Any screenshots and ideas would be highly appreciated. Thanks everybody :)
majidkamali1370 (241)
search "SVG" or "Scalable Vector Graphics" in google.
it is an XML file (text file). An SVG viewer renders this XML to a picture.
pjesh (9)
Err does this work in C++?

I am supposed to do it in C++ on standard libraries.
majidkamali1370 (241)
Standard library does not have any graphical header.
you can create a text file in SVG format and then open it with an image viewer.
This is a simple SVG picture:
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<svg id="svgelem" height="400" width="500" xmlns="http://www.w3.org/2000/svg">
<defs>
	<radialGradient id="gradient1" cx="50%" cy="50%" r="50%" fx="50%" fy="50%">
		<stop offset="0%" style="stop-color:rgb(200,200,200); stop-opacity:0" />
		<stop offset="100%" style="stop-color:rgb(0,0,255); stop-opacity:1" />
	</radialGradient>
	<radialGradient id="gradient2" cx="50%" cy="50%" r="50%" fx="50%" fy="50%">
		<stop offset="0%" style="stop-color:red; stop-opacity:1" />
		<stop offset="100%" style="stop-color:rgb(100,100,100); stop-opacity:1" />
	</radialGradient>
</defs>

	<circle cx="100" cy="100" r="100" fill="red"
		style="stroke:blue;stroke-width:2;fill:url(#gradient2)" />
	<rect id="redrect" x="200" y="0" width="200" height="200" fill="green"
		style="stroke:yellow;stroke-width:2" />
	<ellipse cx="450" cy="100" rx="50" ry="100"
		style="stroke:gray;stroke-width:2;fill:url(#gradient1)" />
	<polygon points="20,290 170,220, 110,350" fill="magenta"
		style="stroke:cyan;stroke-width:2" />
	<line x1="25" y1="225" x2="175" y2="375"
		style="stroke:purple;stroke-width:2" />
	<polyline points="200,210 200,270 300,230 300,350 410,300 450,380" fill="white"
		style="stroke:purple;stroke-width:2" />
</svg>

As you see this is a text file. you can create one of them with c++, then you can open it with image viewer.

EDIT: you can do this in an object oriented manner.
Last edited on
pjesh (9)
Oh all right. Thanks for that. But I'm acquired to do it with standard library.

It's for my assignment :)
Is there a way to do it with a standard one?
majidkamali1370 (241)
If you want to create an image, there are no standard or library in c++ for that.
But as I said create a text file like above with standard library (fstream) and view that with an image viewer.
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