To build a 3d room with 4 walls

I have been experiencing a difficulty in designing a room with 4 walls to be preseted in 3D .a help would be much appreciated as I'm stuck in my middle of thesis.

With regards ,

GIRISH

[Adam Danz]

Use patch to create 2d planes in 3D axes.

[GIRISH SATYA PAPOLU]

Sir,

thank you so much .but im new to matlab and can you help in finding the patch .it would be a great help

with regards

[Jan]

Please explain any details. How are the coordinates defined? What have you tried so far? Which problem do you have?

[GIRISH SATYA PAPOLU]

sir,

I need to design just a plan room in which i need to show the refelctions,refractions caused by a transmitter and receivier.In order to show it i jus need a basic version of room containing 4 walls like a cube and then in future i need to add other things like furniture etc

so my basic problem is to jus to design a room with 4 walls like a cube .

thank you,

with regards,

GIRISH

[GIRISH SATYA PAPOLU]

[Jan]

A cube has 6 walls, if you consider floor and ceiling.

The example you are showing contains much more details than "4 walls". It is not clear what "design a room" exactly means. Adding "furnature" can be implemented as complicated as you want. You cannot expect, that the forum writes you a 3D modelling software. So please post, what you have tried so far. I've asked already, how your inputs are defined. But your current explanations are far too abstract to allow to help you.

[GIRISH SATYA PAPOLU]

I'm sorry for being too vague in my information,i need to design a room with 6 walls as you have said for testing refractions,reflections caused in a closed room with increasing complications as the process goes on like 1st only a cube with 6 walls,later with some windows and cupboards etc.

I'm sorry once again, Thank you so much for the help i have received from this forum .it has really taken me a step near to my goal.

Answer 1

[Adam Danz]

> can you help in finding the patch

I can help you understand the concept so you can apply it to your thesis work.

There are multiple ways to draw 2D rectangles or 3D cubes within 3D axes. I'll use patch but also see surf which isn't much different from patch.

First read through the documentation page for the patch function and look at the examples. If you want to show only the edges of the rectangles/cubes, then set the FaceColor of surf/patch objects to None.

Example

% 2D wall
x = [-5 5 5 -5];
y = [6 6 6 6];
z = [0 0 3 3];

Just by looking at the [x,y,z] coordinates above, imagine where this wall will be in 3D axes. If you can't imagine where it will be then you don't understand a 3D coordinate systems and you'll need to fill that gap before you're able to move on.

figure()
patch(x,y,z,[1 1 1],'FaceColor','none','EdgeColor','m','LineWidth',2)
view(3) 
xlabel('x')
ylabel('y')
zlabel('z')
grid on
axis equal % important
xlim([-6 6])
ylim([-6 6])
zlim([-1 6])

[GIRISH SATYA PAPOLU]

dear sir

thank you so much for giving a very generous helping hand.i hope it will make my work a lot easier.

With regards,

Girish

[Adam Danz]

This function may also be helpful for your task

https://www.mathworks.com/matlabcentral/fileexchange/15161-plotcube

It has options to set the face color to none or the facealpha to 0 which has the same effect.

[GIRISH SATYA PAPOLU]

Sir,

I'll go through the guidelines you have given .

thank you once again,

with regards,

Girish