#javascript-processing-example-basic-structure-coordinates.htm / htm
<!DOCTYPE html> <html><head> <script src="javascript-processing-example-processing.js"></script> <script src="javascript-processing-example-init.js"></script> <link rel="stylesheet" href="javascript-processing-example-style.css"> </head><body><h1><a href="http://ejohn.org/blog/processingjs/">Processing.js</a></h1> <h2>Coordinates</h2> <p>All shapes drawn to the screen have a position that is specified as a coordinate. All coordinates are measured as the distance from the origin in units of pixels. The origin [0, 0] is the coordinate is in the upper left of the window and the coordinate in the lower right is [width-1, height-1].</p> <p><a href="http://processing.org/learning/basics/coordinates.html"><b>Original Processing.org Example:</b> Coordinates</a><br> <script type="application/processing"> // Sets the screen to be 200, 200, so the width of the window is 200 pixels // and the height of the window is 200 pixels size(200, 200); background(0); noFill(); stroke(255); // The two parameters of the point() method each specify coordinates. // This call to point() draws at the position [100, 100] point(width/2, height/2); // Draws to the position [100, 50] point(width/2, height/4); // It is also possible to specify a point with any parameter, // but only coordinates on the screen are visible point(60, 30); point(60, 134); point(160, 50); point(280, -800); point(201, 100); // Coordinates are used for drawing all shapes, not just points. // Parameters for different methods are used for different purposes. // For example, the first two parameters to line() specify the coordinates of the // first point and the second two parameters specify the second point stroke(204); line(0, 73, width, 73); // The first two parameters to rect() are coordinates // and the second two are the width and height rect(110, 55, 40, 36); </script><canvas width="200" height="200"></canvas></p> <div style="overflow: hidden; height: 0px; width: 0px;"></div> <pre><b>// All Examples Written by <a href="http://reas.com/">Casey Reas</a> and <a href="http://benfry.com/">Ben Fry</a> // unless otherwise stated.</b> // Sets the screen to be 200, 200, so the width of the window is 200 pixels // and the height of the window is 200 pixels size(200, 200); background(0); noFill(); stroke(255); // The two parameters of the point() method each specify coordinates. // This call to point() draws at the position [100, 100] point(width/2, height/2); // Draws to the position [100, 50] point(width/2, height/4); // It is also possible to specify a point with any parameter, // but only coordinates on the screen are visible point(60, 30); point(60, 134); point(160, 50); point(280, -800); point(201, 100); // Coordinates are used for drawing all shapes, not just points. // Parameters for different methods are used for different purposes. // For example, the first two parameters to line() specify the coordinates of the // first point and the second two parameters specify the second point stroke(204); line(0, 73, width, 73); // The first two parameters to rect() are coordinates // and the second two are the width and height rect(110, 55, 40, 36);</pre> </body></html>
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