Caustics mapping problem [SOLVED]

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Zar
Posts: 29
Joined: Mon Aug 07, 2006 4:46 pm
Location: Brazil

Caustics mapping problem [SOLVED]

Post by Zar »

I'm trying to simulate caustics mapping to achieve an underwater effect using createTextureAnimator

This is the result:

Image

Basically I've created a terrain mesh with a sand-like texture, added a blueish ambient light, a blueish fog and a copy of the same terrain mesh placed a little bit above the first one with additional material flags as follows:

EMF_LIGHTING, false
EMF_FOG_ENABLE, true
EMT_TRANSPARENT_ADD_COLOR

The second mesh (transparent) has a TextureAnimator that loop 32 caustic images like this one:

Image

I'm very sastified with the resulting effect, but the problem is that I can't perfectly match both terrain meshes at the edges and a lighter border is clearly visible between them.

Image

Here is my code:

Code: Select all

IAnimatedMesh* terrain = 0;
	terrain = smgr->getMesh("./media/meshes/seabed.x");

	ISceneNode* terrainnode = 0;
	terrainnode = smgr->addOctTreeSceneNode(terrain);
    
    ITriangleSelector* selectorterrain = 0;	
	if (terrainnode)
	{		
    terrainnode->setScale(vector3df(60,60,60));
    terrainnode->setPosition(core::vector3df(0,0,0));
    terrainnode->setRotation(core::vector3df(270,0,0));	
	terrainnode->setMaterialTexture(0, driver->getTexture("./media/meshes/00003.jpg"));
    terrainnode->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, true);
    terrainnode->setMaterialFlag(video::EMF_LIGHTING, true);
    terrainnode->setMaterialFlag(EMF_FOG_ENABLE, true);
    selectorterrain = smgr->createOctTreeTriangleSelector(terrain->getMesh(0), terrainnode, 128);
		terrainnode->setTriangleSelector(selectorterrain);
		selectorterrain->drop();
	}   
	
    ISceneNodeAnimator* animaterrain = smgr->createCollisionResponseAnimator(
		selectorterrain, camera, core::vector3df(10,30,10),
		core::vector3df(0,-30.0f,0), 
		core::vector3df(0,30,0));
	camera->addAnimator(animaterrain);
	animaterrain->drop();
	
	
    
	IAnimatedMesh* caustic = 0;
	caustic = smgr->getMesh("./media/meshes/seabed.x");

	
	ISceneNode* causticnode = 0;
	causticnode = smgr->addOctTreeSceneNode(caustic);
    
    causticnode->setScale(vector3df(59.98,59.98,59.98));
    causticnode->setPosition(core::vector3df(0,1,0));
    causticnode->setRotation(core::vector3df(270,0,0));	

    causticnode->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, true);
    causticnode->setMaterialFlag(video::EMF_LIGHTING, false);
    causticnode->setMaterialFlag(EMF_FOG_ENABLE, true);
    causticnode->setMaterialType(video::EMT_TRANSPARENT_ADD_COLOR);
    causticnode->setMaterialTexture(0, driver->getTexture("./media/meshes/caustic_001.bmp"));
     core::array<ITexture*> tt(32);
     tt.insert(driver->getTexture("./media/meshes/caustic_001.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_002.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_003.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_004.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_005.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_006.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_007.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_008.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_009.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_010.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_011.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_012.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_013.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_014.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_015.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_016.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_017.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_018.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_019.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_020.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_021.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_022.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_023.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_024.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_025.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_026.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_027.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_028.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_029.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_030.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_031.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_032.bmp"));

     ISceneNodeAnimator* animatecaustic = smgr->createTextureAnimator(tt,200,true);
     causticnode->addAnimator(animatecaustic);
     animatecaustic->drop();
I need some help to solve this. I don't know if it is possible to solve or if I will have to apply the caustic animator into one single mesh instead. Any ideas?

----------------------------------

After a few tests, I've found the solution. There was a blending problem when the transparent node get folded. It wasn't completely transparent (probably due to the fog). So I've overlayed the caustic images with the sand-like texture and applied the resulting textures to a single mesh node and animated it with TextureAnimator.

Here is the result:

Image

...and the code:

Code: Select all

IAnimatedMesh* terrain = 0;
	terrain = smgr->getMesh("./media/meshes/seabed.x");

	
	ISceneNode* terrainnode = 0;
	terrainnode = smgr->addOctTreeSceneNode(terrain);
    
    ITriangleSelector* selectorterrain = 0;	
	if (terrainnode)
	{		
    terrainnode->setScale(vector3df(60,60,60));
    terrainnode->setPosition(core::vector3df(0,0,0));
    terrainnode->setRotation(core::vector3df(270,0,0));	
    terrainnode->setMaterialTexture(0, driver->getTexture("./media/meshes/caustic_001.bmp"));
     core::array<ITexture*> tt(32);
     tt.insert(driver->getTexture("./media/meshes/caustic_001.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_002.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_003.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_004.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_005.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_006.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_007.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_008.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_009.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_010.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_011.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_012.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_013.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_014.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_015.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_016.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_017.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_018.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_019.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_020.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_021.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_022.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_023.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_024.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_025.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_026.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_027.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_028.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_029.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_030.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_031.bmp"));
     tt.insert(driver->getTexture("./media/meshes/caustic_032.bmp"));

     ISceneNodeAnimator* animatecaustic = smgr->createTextureAnimator(tt,200,true);
     terrainnode->addAnimator(animatecaustic);
     animatecaustic->drop();	
	
	
    terrainnode->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, true);
    terrainnode->setMaterialFlag(video::EMF_LIGHTING, false);
    terrainnode->setMaterialFlag(EMF_FOG_ENABLE, true); 
    selectorterrain = smgr->createOctTreeTriangleSelector(terrain->getMesh(0), terrainnode, 128);
		terrainnode->setTriangleSelector(selectorterrain);
		selectorterrain->drop();
	}   
	
    ISceneNodeAnimator* animaterrain = smgr->createCollisionResponseAnimator(
		selectorterrain, camera, core::vector3df(10,30,10),
		core::vector3df(0,-30.0f,0), 
		core::vector3df(0,30,0));
	camera->addAnimator(animaterrain);
	animaterrain->drop();
Any comments or alternative suggestions will be much appreciated!
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