View from a plane

[pmnrebelo]

Hi people,

Can i view my object from a plane already import on cloudcompare?
I have a mesh and i need visualize the mesh with the point of view of this plane...


Regards,

Pedro Rebelo

[daniel]

Well, if you load or create a plane in CC (I mean a 'Plane' primitive) then you can right click on its entry in the DB tree and use 'Align camera' to make the 3D camera look towards its normal vector. And you use the other 'Align camera (reverse)' option to look in the opposite direction.

[pmnrebelo]

Thank you! This help to solve one of my problems.

Now i need produce ortophoto with 5mm pixel size, how can i have this render to file with that detail? Can you help me?
I know i need to combine zoom and render but I do not know how to get this detail...


Regards,

Pedro Rebelo

[daniel]

Use the 'Display > Adjust zoom' tool (with the right 'pixel size'). See http://www.cloudcompare.org/doc/wiki/in ... djust_zoom

[pmnrebelo]

But if i put 5mm on pixel size, the zoom will cut my image

[daniel]

Then it means that the resolution of the screen itself is too low.

To overcome this, you can input a bigger pixel size (e.g. 10 or 20 mm) and use the 'zoom' option of the 'Display > renter to file' tool to render an image twice or four times bigger (so that in the end you get your 5 mm / pixel).

[pmnrebelo]

Ok that means if i put 10mm on pixel size and in render file i put zoom 2 it will take 5mm ?

[pmnrebelo]

what are the units of pixel size?

[daniel]

The units are actually the same as your cloud (what we call 'implicit units').

[daniel]

And to answer your previous question: if you apply a zoom of 2 when rendering, you'll get twice as pixels with the same viewport, therefore the pixel size will indeed be divided by 2.