[APP][3.0+] LectureNotes - custom drawing tool JavaScript codes

[laolang_cool]

Is there any way to draw a trapezoid? I cant find any request for it, maybe I miss something?

 

[acadoid]

@dlas: You cannot change palettes in the pencil toolbox, but that is an interesting idea.

@laolang_cool: Custom drawing tools have two input points, the start and the end of the selection. A general trapezoid requires more information, but you could use the two input points for a special trapezoid, for instance by fixing the length ratio of the two parallel sides.

 

[odlodl]

Hi,

Thank you all for sharing your codes. It helps me a lot.

I want to add an integral sign.
I added a picture from Mathemtica for example.
I'm sure it can be prettier, but it is good enough for my needs.

Any help will be great

thanks.

 

[acadoid]

@odlodl: UTF-8 contains an integral sign, U+222B, or ‘∫’.

 

[odlodl]

@odlodl: UTF-8 contains an integral sign, U+222B, or ‘∫’.

Thanks!

 

[caffeinatedinsanity]

Does anyone have an easy way to figure out which values I should use to draw an arc between 2 points?

Because figuring out the radius,radians, and center point has pretty much been a guess and check thing for me. I wish there was just a "LN.drawArc" command that took 2 points and a radius, but if I'm having trouble figuring it out then its probably not an easy command to create either.

 

[MJannek]

Here's an update for all the containers I've uploaded before. New tools are in bold and some of the old ones have been tweaked a bit (eg. snapped to grid, resized for a better fit,...).

Discrete Maths:
- Graphs on n points (cycles, wheels, paths, etc.)
- Famous graphs (K(3,3), Petersen, Durer, Heawood, cube, octahedron,...)
- Circulant graphs
- Petersen graphs
- Venn diagram (just three simple circles)
- Truth table
- Sequences
- Divisors

Geometry:
- Sphere
- Torus
- Fractals
- Parametric curves

Probability:
- various discrete distributions (graphs and tables)
- Bell curve (graph)
- Chi squared curve (graph)

Statistics:
- Sample Statistics
- Pie Chart
- Bar Chart
- Linear Regression
- Student Table
- Chi-squared Table

Misc:
- Parabola
- Square Root Symbol
- Checkerboard
- Trees
- Buffon Needle Simulator
- Vector fields
- Euclidean Algorithm

Some tools would really benefit from string input, though, or at least integers/floats entered via numberical keyboard. For example, the script that lists all divisors of a given integer. It's a bit annoying to have to use the slider to find a particular integer between 1 and 1000. Initially, I wanted it to go up to 10000 or more since it doesn't take that much longer to run, but selecting the desired integer was too time consuming.

Similarly, linear regression uses precisely 5 data points right now. If at some point it becomes possible to input string parameters or at least use more than 10 parameters I'll tweak the tool to make it work for n points. I suppose I could borrow Tamasaka's method to write the data into the keyword file but I'd rather wait for more suitable input methods to become available.

Oh, and I've been experimenting with rainbow colors in some of the tools (like in Vector Fields, where the color of the vector depends on the angle). It makes for nice looking graphics but it slows the tools down even more. I'm quite certain that the tools are much slower on my Note 12.2 compared to 10.1. I don't have the 10.1 with me at the moment, so I cannot verify. Let me know if you have runtime problems with any of the tools although there's not much I can do to make them work. Sometimes it fails once and then works on the next try. Parametric curves seem to be particulary sensitive to the number of plotpoints, and Fractals to the level of recursion.

Hi,what are the settings for the Trees?