Saturday, December 15, 2012

Graph Improvements

I am working on improving graphing for the next update.  Currently, you are forced to enter equations in the format y=...  In the next update this will change.  The "y=" part will be removed so you are free to enter equations such as x^2+y^2=1 to draw a circle.  You can also enter equations to draw ellipses, hyperbola, and inverse functions.  For example, you could graph y=x^2-2x+1 and then graph the inverse at the same time by swapping x and y to graph x=y^2-2y+1.

In addition, there will be some improvement to how the traces are drawn.  For example, when you currently graph y=tan(x) and zoom out far enough, you will not see y go to + and - infinity when x=pi/2.  Instead the trace will just stop at a random y value and the start again at some -y value.  This will be fixed and now y=tan(x) will always be drawn off the top and bottom of the screen when x=pi/2.

I am also working to add the ability to graph parametric equations and polar coordinates to the paid version.

Saturday, December 8, 2012

Version 1.10

Version 1.10 is now available on Google Play.  This adds copy/paste, option to clear history, and fixes some crashes.