Section 1.2 - What can't be done with picFX

picFX, like any software, isn't perfect, and there are things that simply can't be done. You will have to use other programs to do these things:

1. Write text, like in paint programs. If you want to put some text in your picture, you can either save the picture and reload it elsewhere, but is might be better (so that you will beneficiate of picFX features while doing it) to write the text with some other software on a blank page, then save it and finally reload it in picFX in a new project. You can then insert the text in your picture.
2. Use freehand drawing. Unless you find an implicit equation defining your drawing, you can't do that. (This is why I said you would need some math skills ;-) (But note that implicit equations are more powerful that they might seem at first use...)
3. Filling an area by its borders. Found in most paint programs, this feature is unavailable in picFX, as it can't be described using equations. The only thing you can do is try to find some equations desribing the surface, or, again, use some other software.
4. Draw line segments, rectangles (full and especially empty), circles, and other things that seem so easy in other software are possible but rather complicated to do in picFX. Use implicit equations for empty circles: x^2+y^2=c, rectangles: x^big+y^big=c and lines: ax+by=c. See the 3.2: Implicit functions section.

Please note that I do not intend to put these features in picFX (it would break the 'philosophy' of my program). But I will maybe make it easier to communicate with other programs, for instance using clipboard.
Also handling of complex numbers is not handled by picFX. This might come once

Index

Chapter one: Introduction

1.1: Introduction

1.2: What can't be done in picFX

1.3: Simple spreads