How do I get ride off the steps in my terrain?

BoBtheREapER · Post by **BoBtheREapER** » Wed Apr 25, 2007 6:48 pm

I've got a problem with my terrain. There are thos "steps" and they really piss me off.

Has anyone an idea how to get ride of them? Here is the code:


HMap = "../GRAPHICS/Planet-Terrain/hm1.bmp";
MainTerrain = smgr->addTerrainSceneNode(HMap.c_str(),smgr->getRootSceneNode(),0,vector3df(this->MovementBox.MinEdge.X,-200, this->MovementBox.MinEdge.Z),vector3df(0,0,0),Scal,SColor(0,0,0,0),4,ETPS_9,0); 
MainTerrain->setAutomaticCulling(EAC_FRUSTUM_BOX);  
MainTerrain->setMaterialTexture(0, driver->getTexture("texture"));
MainTerrain->setMaterialType(video::EMT_DETAIL_MAP);
MainTerrainSelector = smgr->createTerrainTriangleSelector(MainTerrain, 0);

Thanks for your help.

vitek · Post by **vitek** » Wed Apr 25, 2007 7:22 pm

Are you talking about the big jagged edges along the edge of the terrain?You see those because the verticies on the edge of your terrain have different heights.

Take a sheet of paper and fold it like an accordion/fan. If you look at the sheet from directly above, the edge will look flat. If you look at it from the edge it will look like VVVVV. Now look at the sheet from the same angle as your screenshot. See the big jaggies? If you want to eliminate those edges you need to modify your heightmap to have consistent height along the edges.

Travis

BoBtheREapER · Post by **BoBtheREapER** » Wed Apr 25, 2007 7:53 pm

I'm talking about the edges at the right border.

Spintz · Post by **Spintz** » Wed Apr 25, 2007 9:26 pm

Can you provide that screenshot in Wireframe please?

vitek · Post by **vitek** » Wed Apr 25, 2007 11:11 pm

From what I'm seeing in the image you've posted everything looks normal. Maybe I'm missing something...

How big is your heightmap image [in pixels]?

Spintz · Post by **Spintz** » Thu Apr 26, 2007 10:54 am

I'm thinking the same things as you Vitek, just thinking how to prove it to him. It's either a heightmap that does not have 2^N+1 dimensions or it's just the view angle of the edge of the terrain.

BoBtheREapER · Post by **BoBtheREapER** » Thu Apr 26, 2007 5:37 pm

my texture is 257*257. How do I draw the wireframe?

Frodenius · Post by **Frodenius** » Thu Apr 26, 2007 7:26 pm

Code: Select all

material->Wireframe = true;

vitek · Post by **vitek** » Thu Apr 26, 2007 8:28 pm

Actually, it would be...

Code: Select all

MainTerrain->setMaterialFlag(video::EMF_WIREFRAME, true);

You can't do 257x257 heightmaps without using 32-bit indices. The largest terrain heightmap that you can use with an unmodified Irrlicht is 129x129.

BoBtheREapER · Post by **BoBtheREapER** » Sun Apr 29, 2007 10:42 am

First thanks for your help.

Somehow the "steps" are gone. But that for a complete "row" seems to lack.

Spintz · Post by **Spintz** » Sun Apr 29, 2007 12:02 pm

Did you try 256x256? You can't, it must be 2^N+1( 17, 33, 65, 129 ). 257 would be the next possible, but that requires 32 bit indices.

BoBtheREapER · Post by **BoBtheREapER** » Sun Apr 29, 2007 1:45 pm

I've tried 256*256 but it only got me problems. How do I use32bit indieces?

Spintz · Post by **Spintz** » Mon Apr 30, 2007 4:21 am

will have to patch( hybrids patch site had a patch for 32 indices, not sure if it will still work with 1.3 ), or use IRRspintz.

hockey97 · Post by **hockey97** » Sun May 27, 2007 1:19 am

Hi is their a way to make in game a one flat leveled terrain and use the mouse to raise the tarrian or lower it, I would know that the mouse would be playing with the 3d model's faces and vertexe's.

Is it possible in Irrlicht??? or is it a harder to do kind of thing??

Dances · Post by **Dances** » Sun May 27, 2007 10:01 am

You'd have to pick your vertices with the mouse and then adjust their position in the mesh... somewhat advanced.