Hi,
i’ve built a mongo COLLADA file (29KB) and it seems asif my ‘effects’ cannot handle the size. When I have a small mesh, the colors are fine, if I make a big mesh (over 610 triangles) its almost asif it pics out colors (phong shading) at random :? what am I missing?
second, where can I find the translation fro HEX colors to phong shading?
cheers - Gj
Hi,
You need to provide more information if you want to get an answer.
What tool did you use to create the COLLADA file ?
What tool did you use to visualize the mesh ?
Can you attach both files you are having problem with ?
What do you mean by translating HEX colors to phong shading ?
Regards
Hi remi. Thanks for you time
the C# program I am making constructs the geometry coordinate list and the
triangle combination list. Using relatively small ploygons (~10 triangles) the colour behaves. Going to the larger polygons (~600 triangles), the colors seem to have a life of their own… (The ploygons I am making are flat).
cheers - Gj
<?xml version="1.0" encoding="utf-8"?>
<COLLADA xmlns="http://www.collada.org/2005/11/COLLADASchema" version="1.4.1">
<asset>
<contributor>
<authoring_tool>Google SketchUp 6.0.515</authoring_tool>
</contributor>
<created>2007-08-06T12:04:13Z</created>
<modified>2007-08-06T12:04:13Z</modified>
<unit name="inches" meter="0.0254"/>
<up_axis>Z_UP</up_axis>
</asset>
<library_materials>
<material id="COLORmesh1noCullingID" name="COLORmesh1noCulling">
<instance_effect url="#COLORmesh1noCulling-effect"/>
</material>
</library_materials>
<library_materials>
<material id="COLORmesh3noCullingID" name="COLORmesh3noCulling">
<instance_effect url="#COLORmesh3noCulling-effect"/>
</material>
</library_materials>
<library_materials>
<material id="COLORmesh5noCullingID" name="COLORmesh5noCulling">
<instance_effect url="#COLORmesh5noCulling-effect"/>
</material>
</library_materials>
<library_effects>
<effect id="COLORmesh1noCulling-effect" name="COLORmesh1noCulling-effect">
<profile_COMMON>
<technique sid="COMMON">
<phong>
<emission>
<color>0.000000 0.000000 0.000000 1</color>
</emission>
<ambient>
<color>0.000000 0.000000 0.000000 1</color>
</ambient>
<diffuse>
<color>0.000000 0.000000 1.000000 1</color>
</diffuse>
<specular>
<color>0.330000 0.330000 0.330000 1</color>
</specular>
<shininess>
<float>20.000000</float>
</shininess>
<reflectivity>
<float>0.100000</float>
</reflectivity>
<transparent>
<color>1 1 1 1</color>
</transparent>
<transparency>
<float>0.000000</float>
</transparency>
</phong>
</technique>
<extra>
<technique profile="GOOGLEEARTH">
<double_sided>1</double_sided>
</technique>
</extra>
</profile_COMMON>
</effect>
<effect id="COLORmesh3noCulling-effect" name="COLORmesh3noCulling-effect">
<profile_COMMON>
<technique sid="COMMON">
<phong>
<emission>
<color>0.000000 0.000000 0.000000 1</color>
</emission>
<ambient>
<color>0.000000 0.000000 0.000000 1</color>
</ambient>
<diffuse>
<color>0.000000 1.000000 0.000000 1</color>
</diffuse>
<specular>
<color>0.330000 0.330000 0.330000 1</color>
</specular>
<shininess>
<float>20.000000</float>
</shininess>
<reflectivity>
<float>0.100000</float>
</reflectivity>
<transparent>
<color>1 1 1 1</color>
</transparent>
<transparency>
<float>0.000000</float>
</transparency>
</phong>
</technique>
<extra>
<technique profile="GOOGLEEARTH">
<double_sided>1</double_sided>
</technique>
</extra>
</profile_COMMON>
</effect>
<effect id="COLORmesh5noCulling-effect" name="COLORmesh5noCulling-effect">
<profile_COMMON>
<technique sid="COMMON">
<phong>
<emission>
<color>0.000000 0.000000 0.000000 1</color>
</emission>
<ambient>
<color>0.000000 0.000000 0.000000 1</color>
</ambient>
<diffuse>
<color>1.000000 0.000000 0.000000 1</color>
</diffuse>
<specular>
<color>0.330000 0.330000 0.330000 1</color>
</specular>
<shininess>
<float>20.000000</float>
</shininess>
<reflectivity>
<float>0.100000</float>
</reflectivity>
<transparent>
<color>1 1 1 1</color>
</transparent>
<transparency>
<float>0.000000</float>
</transparency>
</phong>
</technique>
<extra>
<technique profile="GOOGLEEARTH">
<double_sided>1</double_sided>
</technique>
</extra>
</profile_COMMON>
</effect>
</library_effects>
<library_geometries>
<geometry id="mesh1-geometry" name="mesh1-geometry">
<mesh>
<source id="mesh1-geometry-position">
<float_array id="mesh1-geometry-position-array" count="1836"> snipped </float_array>
<technique_common>
<accessor source="#mesh1-geometry-position-array" count="612" stride="3">
<param name="X" type="float"/>
<param name="Y" type="float"/>
<param name="Z" type="float"/>
</accessor>
</technique_common>
</source>
<source id="mesh1-geometry-normal">
<float_array id="mesh1-geometry-normal-array" count="3">1.000000 0.000000 0.000000 </float_array>
<technique_common>
<accessor source="#mesh1-geometry-normal-array" count="1" stride="3">
<param name="X" type="float"/>
<param name="Y" type="float"/>
<param name="Z" type="float"/>
</accessor>
</technique_common>
</source>
<source id="mesh1-geometry-uv">
<float_array id="mesh1-geometry-uv-array" count="2">0.000000 0.000000 </float_array>
<technique_common>
<accessor source="#mesh1-geometry-uv-array" count="1" stride="2">
<param name="S" type="float"/>
<param name="T" type="float"/>
</accessor>
</technique_common>
</source>
<vertices id="mesh1-geometry-vertex">
<input semantic="POSITION" source="#mesh1-geometry-position"/>
</vertices>
<triangles material="mesh1noCulling" count="1220">
<input semantic="VERTEX" source="#mesh1-geometry-vertex" offset="0"/>
<input semantic="NORMAL" source="#mesh1-geometry-normal" offset="1"/>
<input semantic="TEXCOORD" source="#mesh1-geometry-uv" offset="2" set="0"/>
snipped </p>
</triangles>
</mesh>
</geometry>
<geometry id="mesh3-geometry" name="mesh3-geometry">
<mesh>
<source id="mesh3-geometry-position">
<float_array id="mesh3-geometry-position-array" count="1836"> snipped </float_array>
<technique_common>
<accessor source="#mesh3-geometry-position-array" count="612" stride="3">
<param name="X" type="float"/>
<param name="Y" type="float"/>
<param name="Z" type="float"/>
</accessor>
</technique_common>
</source>
<source id="mesh3-geometry-normal">
<float_array id="mesh3-geometry-normal-array" count="3">1.000000 0.000000 0.000000 </float_array>
<technique_common>
<accessor source="#mesh3-geometry-normal-array" count="1" stride="3">
<param name="X" type="float"/>
<param name="Y" type="float"/>
<param name="Z" type="float"/>
</accessor>
</technique_common>
</source>
<source id="mesh3-geometry-uv">
<float_array id="mesh3-geometry-uv-array" count="2">0.000000 0.000000 </float_array>
<technique_common>
<accessor source="#mesh3-geometry-uv-array" count="1" stride="2">
<param name="S" type="float"/>
<param name="T" type="float"/>
</accessor>
</technique_common>
</source>
<vertices id="mesh3-geometry-vertex">
<input semantic="POSITION" source="#mesh3-geometry-position"/>
</vertices>
<triangles material="mesh3noCulling" count="1220">
<input semantic="VERTEX" source="#mesh3-geometry-vertex" offset="0"/>
<input semantic="NORMAL" source="#mesh3-geometry-normal" offset="1"/>
<input semantic="TEXCOORD" source="#mesh3-geometry-uv" offset="2" set="0"/>
snipped </p>
</triangles>
</mesh>
</geometry>
<geometry id="mesh5-geometry" name="mesh5-geometry">
<mesh>
<source id="mesh5-geometry-position">
<float_array id="mesh5-geometry-position-array" count="1836"> snipped </float_array>
<technique_common>
<accessor source="#mesh5-geometry-position-array" count="612" stride="3">
<param name="X" type="float"/>
<param name="Y" type="float"/>
<param name="Z" type="float"/>
</accessor>
</technique_common>
</source>
<source id="mesh5-geometry-normal">
<float_array id="mesh5-geometry-normal-array" count="3">1.000000 0.000000 0.000000 </float_array>
<technique_common>
<accessor source="#mesh5-geometry-normal-array" count="1" stride="3">
<param name="X" type="float"/>
<param name="Y" type="float"/>
<param name="Z" type="float"/>
</accessor>
</technique_common>
</source>
<source id="mesh5-geometry-uv">
<float_array id="mesh5-geometry-uv-array" count="2">0.000000 0.000000 </float_array>
<technique_common>
<accessor source="#mesh5-geometry-uv-array" count="1" stride="2">
<param name="S" type="float"/>
<param name="T" type="float"/>
</accessor>
</technique_common>
</source>
<vertices id="mesh5-geometry-vertex">
<input semantic="POSITION" source="#mesh5-geometry-position"/>
</vertices>
<triangles material="mesh5noCulling" count="1220">
<input semantic="VERTEX" source="#mesh5-geometry-vertex" offset="0"/>
<input semantic="NORMAL" source="#mesh5-geometry-normal" offset="1"/>
<input semantic="TEXCOORD" source="#mesh5-geometry-uv" offset="2" set="0"/>
snipped </p>
</triangles>
</mesh>
</geometry>
</library_geometries>
<library_cameras>
<camera id="Camera-camera" name="Camera-camera">
<optics>
<technique_common>
<perspective>
<xfov>46.666667</xfov>
<yfov>35.000000</yfov>
<znear>1.000000</znear>
<zfar>1000.000000</zfar>
</perspective>
</technique_common>
</optics>
</camera>
</library_cameras>
<library_visual_scenes>
<visual_scene id="SketchUpScene" name="SketchUpScene">
<node id="Model" name="Model">
<node id="Group1" name="Group1">
<node id="mesh1" name="mesh1">
<instance_geometry url="#mesh1-geometry">
<bind_material>
<technique_common>
<instance_material symbol="COLORmesh1noCulling" target="#COLORmesh1noCullingID"/>
</technique_common>
</bind_material>
</instance_geometry>
</node>
</node>
<node id="Group1" name="Group1">
<node id="mesh3" name="mesh3">
<instance_geometry url="#mesh3-geometry">
<bind_material>
<technique_common>
<instance_material symbol="COLORmesh3noCulling" target="#COLORmesh3noCullingID"/>
</technique_common>
</bind_material>
</instance_geometry>
</node>
</node>
<node id="Group1" name="Group1">
<node id="mesh5" name="mesh5">
<instance_geometry url="#mesh5-geometry">
<bind_material>
<technique_common>
<instance_material symbol="COLORmesh5noCulling" target="#COLORmesh5noCullingID"/>
</technique_common>
</bind_material>
</instance_geometry>
</node>
</node>
</node>
<node id="Camera" name="Camera">
<matrix>
0.987748 -0.010811 0.155681 659.133283
0.156056 0.068427 -0.985375 -6028.039012
-0.000000 0.997598 0.069276 567.242137
0.000000 0.000000 0.000000 1.000000
</matrix>
<instance_camera url="#Camera-camera"/>
</node>
</visual_scene>
</library_visual_scenes>
<scene>
<instance_visual_scene url="#SketchUpScene"/>
</scene>
</COLLADA>