The following will color in the interior of a triangle. If the vertices A, B, and C are in counter-clockwise order it will color it in yellow, otherwise in...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the GraphingCalcUsers group. File :...
GraphingCalcUsers@yah...
Jan 1, 2006 12:57 pm
734
The following files work, but are very slow. You can have different colors according to whether the vertices are in clockwise or counterclockwise order: Angle...
(Also uploaded to the Geometry and Linear Algebra sections, along with a PDF version of this e-mail.) Here's one way to use cross-hatching. This file...
I'm on my way to figuring out how to do cross-hatching with parameter lists. This approach seems like it's going to be several times faster than taking a slice...
Got some interesting patterns accidentally while trying to get dotted circles. I meant to have the argument to the exp( ) function go from 0 to 360 degrees and...
Ron, If there were some way to turn off the lines where this function goes from a modulus of zero, I'd be able to have nice dotted circles. If it's not too...
I spoke too soon. There's an easy way to do this just by using "if". The only problem is that the spacing changes as the line segment is stretched, but...
Here's an updated version on determining the regions of a triangle via determinants. I think this coloring scheme makes it a lot cleaerer what's going on. Here...
Here's the beginning of the correct way to do this, with parallelograms determined by a side and a general point, P. The areas of these parallelograms (when...
GraphingCalc users: Somebody in the group just told me he wasn't getting pictures and files. If you set your preferences to "Individual E-mails" then you ...
Here is one way to project a point onto a line, and also find the distance. I couldn't find an intuitive explanation on how to go about doing this, but fell...
Here's a slightly improved version. Note that U, the purple point, is at unit-distance on the line. Otherwise, you just have to divide through to make sure...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the GraphingCalcUsers group. File :...
GraphingCalcUsers@yah...
Jan 5, 2006 5:57 pm
748
It looks pretty obvious that this expression for the projection of a point onto a line could be simplified. Multiplying out the matrix with Q using the...
Here's a way to have a counter. Seems like with a little work, this sort of technique can be used to display onscreen values, such as of a matrix when doing...
Some first attempts to have sequenced phases of animations, by using the clamp( ) function. Haven't got it quite right, but seems like a good physics demo of...
Finally getting the hang of how the color setting works. It seems to work best if you plug in the highest coordinate you see in your window frame (in this case...
Elaborating a little bit on some of the Examples and the info in the Help for 2D color mapping, I came up with some nice results using partitioned-off colors....
Fixed up projections onto lines. Also uploaded to the Tools section. Projection of the point P onto the line with normal N: Unit direction-vector of the line: ...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the GraphingCalcUsers group. File :...
GraphingCalcUsers@yah...
Jan 7, 2006 8:55 pm
758
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the GraphingCalcUsers group. File :...
GraphingCalcUsers@yah...
Jan 7, 2006 8:56 pm
759
Interactive file on the vector form of the equation for a line, the projection of a point onto the line, and the distance to the line. The normal to the line...
Work-in-progress on how to "morph" (animate the linear interpolation) between one iteration of a complex function and the next. Very interesting if you "Save...
Amazingly enough, GC can put as many color-wheels you want around moveable vertices in a plane figures, via the color-mapping feature. I'm having trouble...
