Waves

Waves





Timothy Closs with a Spectrum


program to make you sea-sick.





How many times have you wanted to show off your new


computer but have had nothing more to boast than a load of


boring arcade games? Well now you can impress everyone with


a stunning graphics display using Waves.


Waves allows a "net" pattern - see examples - to be


transformed into another net pattern in a smooth, nine


frame animation sequence. It is easy to use, but results


can be stunning. When Run, Waves will display the message:


Press 'L' to Load frames


Any other key to continue


If you wish to load some frames from tape, press L and


enter the name of the file to be loaded - otherwise press


any other key. [You can use this to see the example which


was depicted with the article - it's on the TZX after the


program, and is called "seasick".]


A cross will then be displayed on the screen. The lower


edge of your first pattern must now be drawn - see


controls. When your edge is finished the cursor will move


up into the top right hand box and your second edge must be


drawn.


The screen will then be cleared and the same process must


be repeated for the edges of your second pattern. The main


controls are:


5 cursor down at a 45 degree angle


6 cursor down at a 22.5 degree angle


7 cursor up at a 22.5 degree angle


8 cursor up at a 45 degree angle


9 cursor across in a straight line


In addition to these basic controls, however, a sine wave


can be drawn by pressing 1.


Also, pressing 0 will copy the edge from the bottom left


box into the top right box.


Now that all the edges have been entered, Waves will come


up with the question "South to North?". Pressing Y will


mean that your net patterns will have lines drawn from the


bottom edge to the top edge.


If you reply Y to the following question, "West to


East?", your patterns will have 10 intermediate lines drawn


from the left of the screen to the right. If you reply Y to


both questions you will have criss-cross net patterns.


You can escape from the graphical display by pressing E.


The program will then print the message:


Press 'S' to Save frames


'R' to Restart program


'A' to see Animation