Label (png file) on a round cylinder surface

steveyeong · 3 Mar 2014, 09:53

can anyone alight me , how can i attach a image file to a round cylinder surface ?
i have no problem doing that on a flat surface. still figuring out how to get the image to blend into a round surface.

apprecial your advice.

Dave R · 3 Mar 2014, 10:41

Something like this? In this case I just imported the image as a material and applied it to the rectangle. Then I applied it to the cylinder as you normally would with the Paint Bucket tool.

Can you show an example of what you're trying to do and the results you're getting?

Edited to add: I drew the cylinder first. Then I selected the circular edge and looked at Entity Info to find out how long it is. After that I drew the rectangle with its long side the same length as the circle. When I applied the material to the rectangle, I clicked at the lower left corner and dragged over to the right edge, not the corner or top. This resulted in the material being created at the proper size to wrap once around the cylinder.

steveyeong · 3 Mar 2014, 12:57

Hi dave ,

there are the e.g.:

[3dwh]/Users/steveyeong/Documents/sketchup file/eg- 1.skp[/3dwh]

not sure if you can read the 3d file, as i not sure whether how to upload a sketch up file.

Dave R · 3 Mar 2014, 13:00

That link is no good. Click on Upload attachment just below the post window. Then select and upload the SKP.

steveyeong · 3 Mar 2014, 13:01

i need the cylinder to be transparent , the logo to be png file, not 100% wrap around, just label on certain part.

any idea how can i do that with the e.g. ?

thanks Dave

eg 1

Dave R · 3 Mar 2014, 13:07

I was just making this while waiting for your file. Draw an outline on the cylinder the size of the label and apply the material to that area only. You can then hide the edges around the label if you don't want them to show.

First you'll need to explode your label component so you get the image as a material.

Dave R · 3 Mar 2014, 13:12

Here's your model.

I added a little color to the transparent material.

eg- 1.skp

steveyeong · 3 Mar 2014, 13:24

@dave r said:

I was just making this while waiting for your file. Draw an outline on the cylinder the size of the label and apply the material to that area only. You can then hide the edges around the label if you don't want them to show.

[attachment=0:23cb5a9p]map.png[/attachment:23cb5a9p]

First you'll need to explode your label component so you get the image as a material.

Hi dave,
YES , this is what i need. do you think you can give detail, step by step on how to do that ?
drawing a rectangle on the cylinder surface ? can you explain how to do that ?

thanks dave.

Dave R · 3 Mar 2014, 13:35

I just copied the top outside edge of the cylinder down with Move/Copy to make the top and bottom limits of the label. Then I drew vertical lines for the left and right edges of the label.

For the one with the map, I laid out the sides of the label on the cylinder first and determined the required width by selecting the bottom edge of the label and looking at Entity Info as I already described. Then I imported the image as texture (not an image like you did) and applied it to a rectangle also as I described above.

For yours I set the top and bottom limits of the label to match the height of your image. Then I exploded your image to make a texture. I applied the texture to the surface between the top and bottom edges. this makes the texture repeat a number of times around the cylinder. I drew vertical lines on either side of a single copy of it, deleted the edges I didn't need and hid the ones around the label. If you turn on Hidden Geometry, you'll be able to see the edges of the label.

steveyeong · 3 Mar 2014, 14:38

@dave r said:

I just copied the top outside edge of the cylinder down with Move/Copy to make the top and bottom limits of the label. Then I drew vertical lines for the left and right edges of the label.

For the one with the map, I laid out the sides of the label on the cylinder first and determined the required width by selecting the bottom edge of the label and looking at Entity Info as I already described. Then I imported the image as texture (not an image like you did) and applied it to a rectangle also as I described above.

For yours I set the top and bottom limits of the label to match the height of your image. Then I exploded your image to make a texture. I applied the texture to the surface between the top and bottom edges. this makes the texture repeat a number of times around the cylinder. I drew vertical lines on either side of a single copy of it, deleted the edges I didn't need and hid the ones around the label. If you turn on Hidden Geometry, you'll be able to see the edges of the label.

hi dave, pardon me i still can't get it.

set the top and bottom limits of the label to match the height of your image.
how to do that ?
2)Then I exploded your image to make a texture.
i got this.
3)applied the texture to the surface between the top and bottom edges.
to no1 ?

apprecial your help..

Dave R · 3 Mar 2014, 14:45

I measured the dimensions of your label component and found it is 7' 11" tall. Then I:

-Selected the top edge of the cylinder.
-Got the Move tool and hit Ctrl (or Option on the Mac) to invoke the copy function.
-Moved a copy of the selected edge down a bit.
-Made another copy 7' 11" below the first copy.

This resulted in a band around the cylinder that matched the height of the label.

steveyeong · 5 Mar 2014, 07:07

Hi dave, just want to say THANK YOU!

now i manage to get it work. the only set back i notice when apply texture image to a surface, even a png file, there is still rectangular line around the label which i can removed. it quite distracting after a render image.http://sketchucation.com/forums/download/file.php?id=116549%26amp;mode=view/rokbox.jpg

like you can see the rectangular line around the ''steve yeong".

is there a way to remove it ? i believed that is the face created.

Dave R · 5 Mar 2014, 10:26

That rectangle you see is because the trasparent material applied arround the label is a different color than the transparency of the label. Make them the same and you shouldn't see the edges.