ORIPA

[YHOYO]

hi..like this?? or like what?

[youtube]http://www.youtube.com/watch?v=KizmzZqTz0Y[/youtube]

http://www.youtube.com/watch?v=KizmzZqTz0Y

[FlareglooM]

YHOYO: It is something like that, but that is not possible. For that option you need to specify the endpoint and the problem is you don't know that endpoint.
Baltorigamist: I don't think it is possible. Maybe using a construction but I don't know atm.

[YHOYO]

You can obtain endpoint using different options, maybe if you know the first point and an angle....and you can see after use some lines intersecting. like this:
[youtube]http://www.youtube.com/watch?v=x0mIhnZqXLs[/youtube]

http://www.youtube.com/watch?v=x0mIhnZqXLs

[FlareglooM]

You can obtain endpoint using different options, maybe if you know the first point and an angle....and you can see after use some lines intersecting. like this:
[youtube]http://www.youtube.com/watch?v=x0mIhnZqXLs[/youtube]

http://www.youtube.com/watch?v=x0mIhnZqXLs

:O I did not know the angle/length option worked that way. I though you could only measure. Thank you!!

[YHOYO]

cool, if you need other thing please ask

[long_quach]

Anyone knows how to trisect angles in ORIPA? As far as I know there's only a tool for bisecting but not for trisecting. How do you guys do?

I don't know ORIPA. I use the most available and simplest tool, PowerPoint. PowerPoint can rotate lines by 1 whole degrees. To mimic trisecting an angle, I would calculate the trigonometry and draw a right triangle with the length and width to that specification and "trace over" the line, then either erase the right triangle or make it white or in the background.

It sounds and looks more painful than it actually is. Just simple trigonometry.
http://www.flickr.com/photos/85937466@N ... 644253418/

Inkscape can rotate an line by a fractional angle.
http://www.happyfolding.com/instruction ... h_inkscape

[Kafar]

Anyone knows how to trisect angles in ORIPA? As far as I know there's only a tool for bisecting but not for trisecting. How do you guys do?

I don't know ORIPA. I use the most available and simplest tool, PowerPoint. PowerPoint can rotate lines by 1 whole degrees. To mimic trisecting an angle, I would calculate the trigonometry and draw a right triangle with the length and width to that specification and "trace over" the line, then either erase the right triangle or make it white or in the background.

It sounds and looks more painful than it actually is. Just simple trigonometry.
http://www.flickr.com/photos/85937466@N ... 644253418/

Inkscape can rotate an line by a fractional angle.
http://www.happyfolding.com/instruction ... h_inkscape

The newest Oripa v35 can draw a line at any given angle with 3 digits after comma.

[Mir Numaan]

i have learned to use all the tools but i still have a problem. I can't make a vertical line from any vertex. Yes, i am aware of 'input verticle line' option but that doesn't kinda work there. I hope you guys get what am i trying to say

[Mir Numaan]

i hope this pic will justice my poor wording


i need to make the bold black lines. any help? thanks!

[Brimstone]

Well those are not vertical creases and what would be the problem to draw them, if you have the starting and end points? All you'd need to do is to draw a crease from one to the other.

[Mir Numaan]

i don't have the end point! that's the problem
EDIT: the pic of the above cp is not drawn by me. its drawn by the author

[YHOYO]

HI, I think you have 3 options to do that line



if you need more help please conect to my skype: yhoyodaqp

even a 4 option using symmetry...

best

Diego Quevedo

i hope this pic will justice my poor wording

i need to make the bold black lines. any help? thanks!

[Mir Numaan]

thanks a lot!!

[Mir Numaan]

another problem. it says failed to fold. here is the cp that i drew



i don't think i made any mistake in cp

[Mir Numaan]

here is the completed piece that i folded some time ago

origami whale shark, from cp by mirnumaan517, on Flickr