How can I rotate a curved rectangle?

I have created a curved rectangle and now I want to rotate it. I know I can not rotate using rectangle commande. I also tried to plot the rotated rectangle using "fill" but then I can not add curvature.

So, the question is, How can I plot a rotated curved rectangle?

[Adam Danz]

rectangle2() from the file exchange can rotate a curved rectangle.

rectangle2([x,y,w,h],'Curvature',[a,b],'Rotation',deg);

Examples:

[Antje Nuthmann]

rectangle2 works well, thanks!

Answer 1

[Friedrich]

HI,

so you have a set of points (x,y) describing a curved rectangle. I guess the keyword here is rotation matrix:

http://en.wikipedia.org/wiki/Rotation_matrix

Create the Matrix accoringly and multiple it with your (x,y) values to get the rotated rectangle.

[Laleh]

But the problem is the command "rectangle" does not support rotation. There is no way, I guess, to rotate a rectangle using the commande "rectangle".

[Friedrich]

Yes in that case no chance. You would need do draw that rectangle by yourself to get x,y points and then rotate it by your own or using the rotate function.

[Laleh]

What do you mean by rotate function? Let's say I have my rotated (x,y) values. If I give these values to function "fill" I will have a nice rotated rectangle. Having these values what is the code to plot the curved rectangle?

[Friedrich]

The rotate function can rotate graphic objects:

http://www.mathworks.com/help/matlab/ref/rotate.html

But not a rectangle object :(

[Laleh]

Yes that is my point, so what should I do now? :(

[Friedrich]

You need to create your own version of the rectangle function which calculates the curved rectangle from scratch. Afterwards you can plot it an rotate it.

Answer 2

[Rafal Samborski]

If it's ony about plotting try to call this after your plot function:

alpha = 30; set(gca, 'View', [alpha 90]);

[Laleh]

After the "rectangle" command when I add your code, it rotates the axis of the plot, and does not show anything inside, just white plot!!!