Help with some geometry question

[Thelokk]

You know when your math teacher told you to pay attention in class, because math would turn out to be useful in life yadda yadda and you were like whatever? Well, I did that with geometry and now I'm screwed. I have two geometry-building problems in Ultimate Doom Builder I simply cannot wrap my head around.

 

1. I am trying to build a stele-like prefab, with a frame-like structure inside which I can put a texture. Problem is, I just can't figure out how to create the upper 'edge' of the frame. Is some kind of textureless surface trickery involved? (disregard the textures, just went for some high contrast stuff for an example).

Spoiler

 

2. Stumped again. How can I create an inverted-pyramid like structure? Something like this: 

 

 

Thanks for helping a poor, unschooled Classics major out. 

Edited January 15, 2022 by Thelokk

[Ludi]

30 minutes ago, Thelokk said:

You know when your math teacher told you to pay attention in class, because math would turn out to be useful in life yadda yadda and you were like whatever? Well, I did that with geometry and now I'm screwed. I have two geometry-building problems in Ultimate Doom Builder I simply cannot wrap my head around.

 

1. I am trying to build a stele-like prefab, with a frame-like structure inside which I can put a texture. Problem is, I just can't figure out how to create the upper 'edge' of the frame. Is some kind of textureless surface trickery involved? (disregard the textures, just went for some high contrast stuff for an example).

  Hide contents

 

2. Stumped again. How can I create an inverted-pyramid like structure? Something like this: 

 

 

Thanks for helping a poor, unschooled Classics major out. 

When I get home from work, I can help you out. Can you send me the wad so I can edit it?

[ducon]

2. Look how old WADs did it.

For example, loot at the doorway or the cross:

https://doomwiki.org/wiki/File:Requiem-map13-end.png