COLLADA loading problem

alelink · Post by **alelink** » Thu May 26, 2005 3:18 pm

Hello to all,
how use a collada's dae mesh?

my program call simply "smgr->addAnimatedMeshSceneNode(smgr->getMesh("cube.dae"));" and in execution it crashes!

how I do?

thank

niko · Post by **niko** » Fri May 27, 2005 8:34 pm

The collada loader works differently. Just do a smgr->getMesh("cube.dae"); That's all. It should create instances of the meshes automaticly. I've written a short explanation here: http://irrlicht.sourceforge.net/docu/cl ... r.html#a38

afecelis · Post by **afecelis** » Fri May 27, 2005 8:39 pm

I'm having problems too. The app compiles ok but I get memory problems when console starts loading things.

Or perhaps I'm not using the script for max properly.

edited: this is my code; do we need to add a node to the mesh to manipulate it?

Code: Select all

//load the map
	IAnimatedMesh* mesh = 0;
	mesh = smgr->getMesh("./data/level.dae"); 
//-----------------------------------------------------------------------------------------------//
	//add map to the scene
	ISceneNode* node = smgr->addOctTreeSceneNode(mesh->getMesh(0));

alelink · Post by **alelink** » Sat May 28, 2005 12:58 pm

my apps crash again,

I have a simple dae file with a cube and non more.

it's strange

afecelis · Post by **afecelis** » Sat May 28, 2005 1:36 pm

yup, mine too.

here's the screenie of the error:

zardoz · Post by **zardoz** » Mon May 30, 2005 8:49 am

any luck with collada?

it loads this file without crash... but mesh is not displayed
is it too small?

Code: Select all

<?xml version="1.0" encoding="UTF-8"?>
<COLLADA xmlns="http://www.collada.org/2004/COLLADASchema" version="1.0.0">
	<asset>
		<revision>1.0</revision>
		<authoring_tool>3DSMAX6 Collada exporter v1.0</authoring_tool>
		<modified>2004-08-10T23:06:46Z</modified>
	</asset>
	<library type="LIGHT">
		<light name="Fspot01" type="SPOT">
						<param name="DIFFUSE" type="ColorRGBA" flow="IN">0 1 0 1</param>
						<param name="SPECULAR" type="ColorRGBA" flow="IN">0 1 0 1</param>
						<param name="INTENSITY" type="float" flow="IN">1</param>
						<param name="ASPECT" type="float" flow="IN">1</param>
						<param name="HOTSPOTSIZE" type="float" flow="IN">43</param>
						<param name="FALLOFFSIZE" type="float" flow="IN">45</param></light>
		<light name="Omni01" type="POINT">
						<param name="DIFFUSE" type="ColorRGBA" flow="IN">0 0 1 1</param>
						<param name="SPECULAR" type="ColorRGBA" flow="IN">0 0 1 1</param>
						<param name="INTENSITY" type="float" flow="IN">1</param>
						<param name="ASPECT" type="float" flow="IN">-1</param></light>
		<light name="FDirect01" type="DIRECTIONAL">
						<param name="DIFFUSE" type="ColorRGBA" flow="IN">0.980392 0 0.968628 1</param>
						<param name="SPECULAR" type="ColorRGBA" flow="IN">0.980392 0 0.968628 1</param>
						<param name="INTENSITY" type="float" flow="IN">1</param>
						<param name="ASPECT" type="float" flow="IN">1</param>
						<param name="HOTSPOTSIZE" type="float" flow="IN">43</param>
						<param name="FALLOFFSIZE" type="float" flow="IN">45</param></light>
		<light name="Omni02" type="AMBIENT">
						<param name="AMBIENT" type="ColorRGBA" flow="IN">0.521569 0.521569 0.521569 1</param>
						<param name="INTENSITY" type="float" flow="IN">1</param>
						<param name="ASPECT" type="float" flow="IN">-1</param></light></library>
	<library type="CAMERA">
		<camera name="Camera01">
			<technique profile="COMMON1.0">
				<optics>
					<program name="PERSPECTIVE">
						<param name="YFOV" type="float" flow="OUT">0.334182</param>
						<param name="ZNEAR" type="float" flow="OUT">0</param>
						<param name="ZFAR" type="float" flow="OUT">1000</param></program></optics></technique></camera></library>
	<library type="TEXTURE"/>
	<library type="MATERIAL"/>
	<library type="GEOMETRY">
		<geometry name="Box01">
			<mesh>
				<source name="Box01-position">
					<array name="Box01-position-array" type="float" count="24">
-0.5 -0.5 0
0.5 -0.5 0
-0.5 0.5 0
0.5 0.5 0
-0.5 -0.5 1
0.5 -0.5 1
-0.5 0.5 1
0.5 0.5 1
</array>
					<technique profile="COMMON1.0">
						<accessor source="#Box01-position-array" count="8" stride="3">
							<param name="X" type="float" flow="OUT"/>
							<param name="Y" type="float" flow="OUT"/>
							<param name="Z" type="float" flow="OUT"/></accessor></technique></source>
				<source name="Box01-normal">
					<array name="Box01-normal-array" type="float" count="108">
0 0 -1 0 0 -1 0 0 -1 0 0 -1 0 0 -1 0 0 -1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 -1 0 0 -1 0 0 -1 0 0 -1 0 0 -1 0 0 -1 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 -1 0 0 -1 0 0 -1 0 0 -1 0 0 -1 0 0 -1 0 0 </array>
					<technique profile="COMMON1.0">
						<accessor source="#Box01-normal-array" count="36" stride="3">
							<param name="X" type="float" flow="OUT"/>
							<param name="Y" type="float" flow="OUT"/>
							<param name="Z" type="float" flow="OUT"/></accessor></technique></source>
				<polygons count="12">
				<input semantic="POSITION" source="#Box01-position"/>
				<input semantic="NORMAL" source="#Box01-normal"/>
					<p>0 0 2 1 3 2</p>
					<p>3 3 1 4 0 5</p>
					<p>4 6 5 7 7 8</p>
					<p>7 9 6 10 4 11</p>
					<p>0 12 1 13 5 14</p>
					<p>5 15 4 16 0 17</p>
					<p>1 18 3 19 7 20</p>
					<p>7 21 5 22 1 23</p>
					<p>3 24 2 25 6 26</p>
					<p>6 27 7 28 3 29</p>
					<p>2 30 0 31 4 32</p>
					<p>4 33 6 34 2 35</p></polygons></mesh></geometry></library>
	<scene name="Default Scene">
		<node name="Box01">
			<instance url="#Box01"/>
			<matrix>1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 8.40779e-045
</matrix></node>
		<node name="Fspot01">
			<instance url="#Fspot01"/>
			<matrix>0.572039 0 0 1.02386
0 0.572039 0 5.46657
0 0 0.572039 52.9869
0 0 1.02386 2.8026e-045
</matrix></node>
		<node name="Omni01">
			<instance url="#Omni01"/>
			<matrix>1 0 0 -0.728051
0 1 0 -1.8137
0 0 1 0.319267
0 0 -0.728051 8.40779e-045
</matrix></node>
		<node name="FDirect01">
			<instance url="#FDirect01"/>
			<matrix>0.531881 0 0.284464 50.4078
0 0.603173 0 0.879061
-0.284464 0 0.531881 115.376
0 0.284464 50.4078 0
</matrix></node>
		<node name="Omni02">
			<instance url="#Omni02"/>
			<matrix>1 0 0 2.57005
0 1 0 -1.93855
0 0 1 0
0 0 2.57005 8.40779e-045
</matrix></node>
		<node name="Camera01">
			<instance url="#Camera01"/>
			<matrix>0.851748 -0.293737 0.433871 13.5973
0.523942 0.482443 -0.701949 -21.9551
-0.00312995 0.825207 0.564821 17.5381
-0.293737 0.433871 13.5973 5.60519e-045
</matrix></node></scene>
</COLLADA>

katoun · Post by **katoun** » Tue Jun 07, 2005 5:27 pm

This is for the Irrlicht documentation:

Code: Select all

However, if the COLLADA file does not include any <instance> tags, only meshes will be loaded by the engine and no scene nodes should be created. Meshes included in the scene will be added into the scene manager with the following naming scheme: path/to/file/file.dea#meshname

What does Niko mean by

Code: Select all

<instance> tags

?

katoun · Post by **katoun** » Tue Jun 07, 2005 5:31 pm

Anyway I need some help:
I have 3dMax5 and I found on the collada web page the script file for the exporter but when I run them they give me an error.
So dose anyone found some working Collada exporters for max(even for 6 would be good, but to work).
Thank you.

zardoz · Post by **zardoz** » Tue Jun 07, 2005 5:44 pm

katoun wrote:Anyway I need some help:
I have 3dMax5 and I found on the collada web page the script file for the exporter but when I run them they give me an error.
So dose anyone found some working Collada exporters for max(even for 6 would be good, but to work).
Thank you.

if it (export script) gives you error with time array (modification time) then just comment the line with error (it will not break any of essential output).

but in any case I am stuck with the COLLADA format... nothing I tried worked... can anyone cofirm if it is possible to load COLLADA? or drop a working sample here....

alelink · Post by **alelink** » Tue Jun 07, 2005 10:42 pm

hello,
I've exported several meshes from Maya and irrlicht crashes when it loads them, but maya can import those meshes!

dont' know....

maybe dae files are binaries?

zardoz · Post by **zardoz** » Wed Jun 08, 2005 6:55 am

alelink wrote:maybe dae files are binaries?

no

T34 · Post by **T34** » Sun Jul 31, 2005 4:24 pm

I have version 1.2.3 of COLLADA and an exporter for 3dmax 7 from collada's site. And it crashes with tutorial for loading meshes.

Is this problem solved?

scotte · Post by **scotte** » Thu Oct 26, 2006 6:35 pm

when loading a collada mesh the getMesh function will return a "dummy object"... what is the real value of the dummy object? I don't know... But if it's supposed to be a "dummy object", I doubt your supposed to use it when attempting to create a scene node.

So if your code is failing... as coded below... it's probably because your using a non-valid Mesh object when attempting to create your scene node.

Now how do we properly load a Collada Mesh and create a scene node? Beats me... If anyone know how...

//load the map
IAnimatedMesh* mesh = 0;
mesh = smgr->getMesh("./data/level.dae");
//-----------------------------------------------------------------------------------------------//
//add map to the scene
ISceneNode* node = smgr->addOctTreeSceneNode(mesh->getMesh(0));