Modified Files:
SGMaterialAnimation.cxx SGMaterialAnimation.hxx: Tim Moore: overhaul the material animation.
This commit is contained in:
frohlich
parent
2dc8de295d
commit
c523e15302
@ -10,9 +10,11 @@
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#include "SGMaterialAnimation.hxx"
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#include <osg/AlphaFunc>
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#include <osg/Array>
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#include <osg/Drawable>
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#include <osg/Geode>
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#include <osg/Geometry>
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#include <osg/Material>
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#include <osg/StateSet>
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#include <osgDB/FileNameUtils>
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#include <osgDB/FileUtils>
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@ -22,7 +24,11 @@
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#include <simgear/props/props.hxx>
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#include <simgear/scene/model/model.hxx>
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struct SGMaterialAnimation::ColorSpec {
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namespace {
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/**
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* Get a color from properties.
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*/
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struct ColorSpec {
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float red, green, blue;
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float factor;
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float offset;
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@ -91,6 +97,12 @@ struct SGMaterialAnimation::ColorSpec {
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v[3] = 1;
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return v;
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}
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osg::Vec4& rgbaVec4()
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{
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return rgba().osg();
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}
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SGVec4f &initialRgba() {
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v[0] = SGMiscf::clip(red*factor + offset, 0, 1);
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v[1] = SGMiscf::clip(green*factor + offset, 0, 1);
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@ -100,8 +112,10 @@ struct SGMaterialAnimation::ColorSpec {
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}
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};
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struct SGMaterialAnimation::PropSpec {
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/**
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* Get a property value from a property.
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*/
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struct PropSpec {
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float value;
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float factor;
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float offset;
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@ -155,148 +169,83 @@ struct SGMaterialAnimation::PropSpec {
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}
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};
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class SGMaterialAnimation::MaterialVisitor : public osg::NodeVisitor {
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public:
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enum {
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/**
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* The possible color properties supplied by a material animation.
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*/
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enum SuppliedColor {
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DIFFUSE = 1,
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AMBIENT = 2,
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SPECULAR = 4,
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EMISSION = 8,
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SHININESS = 16,
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TRANSPARENCY = 32
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};
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};
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MaterialVisitor() :
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osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
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_updateMask(0),
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_ambient(-1, -1, -1, -1),
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_diffuse(-1, -1, -1, -1),
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_specular(-1, -1, -1, -1),
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_emission(-1, -1, -1, -1),
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_shininess(-1),
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_alpha(-1)
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const unsigned AMBIENT_DIFFUSE = AMBIENT | DIFFUSE;
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const int allMaterialColors = (DIFFUSE | AMBIENT | SPECULAR | EMISSION
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| SHININESS);
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// Visitor for finding default material colors in the animation node's
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// subgraph. This makes some assumptions about the subgraph i.e.,
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// there will be one material and one color value found. This is
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// probably true for ac3d models and most uses of material animations,
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// but will break down if, for example, you animate the transparency
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// of a vertex colored model.
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class MaterialDefaultsVisitor : public osg::NodeVisitor {
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public:
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MaterialDefaultsVisitor()
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: osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
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ambientDiffuse(-1.0f, -1.0f, -1.0f, -1.0f)
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{
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setVisitorType(osg::NodeVisitor::NODE_VISITOR);
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}
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void setDiffuse(const SGVec4f& diffuse)
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{
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if (diffuse != _diffuse)
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_diffuse = diffuse;
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_updateMask |= DIFFUSE;
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}
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void setAmbient(const SGVec4f& ambient)
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{
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if (ambient != _ambient)
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_ambient = ambient;
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_updateMask |= AMBIENT;
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}
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void setSpecular(const SGVec4f& specular)
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{
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if (specular != _specular)
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_specular = specular;
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_updateMask |= SPECULAR;
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}
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void setEmission(const SGVec4f& emission)
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{
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if (emission != _emission)
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_emission = emission;
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_updateMask |= EMISSION;
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}
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void setShininess(float shininess)
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{
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if (shininess != _shininess)
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_shininess = shininess;
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_updateMask |= SHININESS;
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}
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void setAlpha(float alpha)
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{
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if (alpha != _alpha)
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_alpha = alpha;
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_updateMask |= TRANSPARENCY;
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}
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virtual void reset()
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{
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_updateMask = 0;
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}
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virtual void apply(osg::Node& node)
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{
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updateStateSet(node.getStateSet());
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maybeGetMaterialValues(node.getStateSet());
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traverse(node);
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}
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virtual void apply(osg::Geode& node)
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{
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apply((osg::Node&)node);
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unsigned nDrawables = node.getNumDrawables();
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for (unsigned i = 0; i < nDrawables; ++i) {
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osg::Drawable* drawable = node.getDrawable(i);
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updateStateSet(drawable->getStateSet());
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maybeGetMaterialValues(node.getStateSet());
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int numDrawables = node.getNumDrawables();
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for (int i = 0; i < numDrawables; i++) {
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osg::Geometry* geom = dynamic_cast<osg::Geometry*>(node.getDrawable(i));
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if (!geom || geom->getColorBinding() != osg::Geometry::BIND_OVERALL)
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continue;
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maybeGetMaterialValues(geom->getStateSet());
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osg::Array* colorArray = geom->getColorArray();
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osg::Vec4Array* colorVec4 = dynamic_cast<osg::Vec4Array*>(colorArray);
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if (colorVec4) {
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ambientDiffuse = (*colorVec4)[0];
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break;
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}
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osg::Vec3Array* colorVec3 = dynamic_cast<osg::Vec3Array*>(colorArray);
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if (colorVec3) {
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ambientDiffuse = osg::Vec4((*colorVec3)[0], 1.0f);
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break;
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}
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}
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}
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if (_updateMask&TRANSPARENCY) {
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osg::Geometry* geometry = drawable->asGeometry();
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if (!geometry)
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continue;
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osg::Array* array = geometry->getColorArray();
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if (!array)
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continue;
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osg::Vec4Array* vec4Array = dynamic_cast<osg::Vec4Array*>(array);
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if (!vec4Array)
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continue;
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// FIXME, according to the colormode in the material
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// we might incorporate the apropriate color value
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geometry->dirtyDisplayList();
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vec4Array->dirty();
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for (unsigned k = 0; k < vec4Array->size(); ++k) {
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(*vec4Array)[k][3] = _alpha;
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}
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}
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}
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}
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void updateStateSet(osg::StateSet* stateSet)
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void maybeGetMaterialValues(osg::StateSet* stateSet)
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{
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if (!stateSet)
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return;
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osg::StateAttribute* stateAttribute;
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stateAttribute = stateSet->getAttribute(osg::StateAttribute::MATERIAL);
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if (!stateAttribute)
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osg::Material* nodeMat
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= dynamic_cast<osg::Material*>(stateSet->getAttribute(osg::StateAttribute::MATERIAL));
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if (!nodeMat)
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return;
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osg::Material* material = dynamic_cast<osg::Material*>(stateAttribute);
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if (!material)
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return;
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if (_updateMask&AMBIENT)
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material->setAmbient(osg::Material::FRONT_AND_BACK, _ambient.osg());
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if (_updateMask&DIFFUSE)
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material->setDiffuse(osg::Material::FRONT_AND_BACK, _diffuse.osg());
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if (_updateMask&SPECULAR)
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material->setSpecular(osg::Material::FRONT_AND_BACK, _specular.osg());
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if (_updateMask&EMISSION)
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material->setEmission(osg::Material::FRONT_AND_BACK, _emission.osg());
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if (_updateMask&SHININESS)
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material->setShininess(osg::Material::FRONT_AND_BACK, _shininess);
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if (_updateMask&TRANSPARENCY) {
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material->setAlpha(osg::Material::FRONT_AND_BACK, _alpha);
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if (_alpha < 1) {
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stateSet->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
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stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
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} else {
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stateSet->setRenderingHint(osg::StateSet::DEFAULT_BIN);
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material = nodeMat;
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}
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}
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}
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private:
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unsigned _updateMask;
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SGVec4f _ambient;
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SGVec4f _diffuse;
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SGVec4f _specular;
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SGVec4f _emission;
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float _shininess;
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float _alpha;
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osg::ref_ptr<osg::Material> material;
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osg::Vec4 ambientDiffuse;
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};
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class SGMaterialAnimation::UpdateCallback : public osg::NodeCallback {
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class UpdateCallback : public osg::NodeCallback {
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public:
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UpdateCallback(const osgDB::FilePathList& texturePathList,
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const SGCondition* condition,
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@ -324,12 +273,13 @@ public:
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virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
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{
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if (!_condition || _condition->test()) {
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osg::StateSet* stateSet = node->getStateSet();
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if ((!_condition || _condition->test()) && stateSet) {
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if (_textureProp) {
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std::string textureName = _textureProp->getStringValue();
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if (_textureName != textureName) {
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osg::StateSet* stateSet = node->getOrCreateStateSet();
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while (stateSet->getTextureAttribute(0, osg::StateAttribute::TEXTURE)) {
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while (stateSet->getTextureAttribute(0,
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osg::StateAttribute::TEXTURE)) {
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stateSet->removeTextureAttribute(0, osg::StateAttribute::TEXTURE);
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}
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std::string textureFile;
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@ -337,7 +287,8 @@ public:
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if (!textureFile.empty()) {
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osg::Texture2D* texture2D = SGLoadTexture2D(textureFile);
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if (texture2D) {
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stateSet->setTextureAttribute(0, texture2D);
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stateSet->setTextureAttribute(0, texture2D,
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osg::StateAttribute::OVERRIDE);
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stateSet->setTextureMode(0, GL_TEXTURE_2D,
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osg::StateAttribute::ON);
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_textureName = textureName;
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@ -349,35 +300,47 @@ public:
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osg::StateSet* stateSet = node->getOrCreateStateSet();
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osg::StateAttribute* stateAttribute;
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stateAttribute = stateSet->getAttribute(osg::StateAttribute::ALPHAFUNC);
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assert(dynamic_cast<osg::AlphaFunc*>(stateAttribute));
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osg::AlphaFunc* alphaFunc = static_cast<osg::AlphaFunc*>(stateAttribute);
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osg::AlphaFunc* alphaFunc = dynamic_cast<osg::AlphaFunc*>(stateAttribute);
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assert(alphaFunc);
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alphaFunc->setReferenceValue(_thresholdProp->getFloatValue());
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}
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_visitor.reset();
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osg::StateAttribute* stateAttribute
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= stateSet->getAttribute(osg::StateAttribute::MATERIAL);
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osg::Material* material = dynamic_cast<osg::Material*>(stateAttribute);
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if (material) {
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if (_ambient.live())
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_visitor.setAmbient(_ambient.rgba());
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material->setAmbient(osg::Material::FRONT_AND_BACK,
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_ambient.rgbaVec4());
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if (_diffuse.live())
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_visitor.setDiffuse(_diffuse.rgba());
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material->setDiffuse(osg::Material::FRONT_AND_BACK,
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_diffuse.rgbaVec4());
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if (_specular.live())
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_visitor.setSpecular(_specular.rgba());
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material->setSpecular(osg::Material::FRONT_AND_BACK,
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_specular.rgbaVec4());
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if (_emission.live())
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_visitor.setEmission(_emission.rgba());
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material->setEmission(osg::Material::FRONT_AND_BACK,
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_emission.rgbaVec4());
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if (_shininess.live())
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_visitor.setShininess(_shininess.getValue());
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if (_transparency.live())
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_visitor.setAlpha(_transparency.getValue());
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node->accept(_visitor);
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material->setShininess(osg::Material::FRONT_AND_BACK,
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_shininess.getValue());
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if (_transparency.live()) {
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float alpha = _transparency.getValue();
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material->setAlpha(osg::Material::FRONT_AND_BACK, alpha);
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if (alpha < 1.0f) {
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stateSet->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
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stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
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} else {
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stateSet->setRenderingHint(osg::StateSet::DEFAULT_BIN);
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}
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}
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}
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}
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traverse(node, nv);
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}
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private:
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SGSharedPtr<const SGCondition> _condition;
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SGSharedPtr<const SGPropertyNode> _textureProp;
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SGSharedPtr<const SGPropertyNode> _thresholdProp;
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MaterialVisitor _visitor;
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std::string _textureName;
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ColorSpec _ambient;
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ColorSpec _diffuse;
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@ -387,6 +350,8 @@ private:
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PropSpec _transparency;
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osgDB::FilePathList _texturePathList;
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};
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} // namespace
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SGMaterialAnimation::SGMaterialAnimation(const SGPropertyNode* configNode,
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SGPropertyNode* modelRoot) :
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@ -419,7 +384,8 @@ SGMaterialAnimation::createAnimationGroup(osg::Group& parent)
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osg::StateSet* stateSet = group->getOrCreateStateSet();
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osg::Texture2D* texture2D = SGLoadTexture2D(textureFile);
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if (texture2D) {
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stateSet->setTextureAttribute(0, texture2D);
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stateSet->setTextureAttribute(0, texture2D,
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osg::StateAttribute::OVERRIDE);
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stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::ON);
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if (texture2D->getImage()->isImageTranslucent()) {
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stateSet->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
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@ -435,13 +401,100 @@ SGMaterialAnimation::createAnimationGroup(osg::Group& parent)
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alphaFunc->setFunction(osg::AlphaFunc::GREATER);
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float threshold = getConfig()->getFloatValue("threshold", 0);
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alphaFunc->setReferenceValue(threshold);
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stateSet->setAttributeAndModes(alphaFunc);
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stateSet->setAttribute(alphaFunc, osg::StateAttribute::OVERRIDE);
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}
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UpdateCallback* updateCallback;
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updateCallback = new UpdateCallback(texturePathList, getCondition(),
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getConfig(), inputRoot);
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group->setUpdateCallback(updateCallback);
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unsigned suppliedColors = 0;
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if (getConfig()->hasChild("ambient"))
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suppliedColors |= AMBIENT;
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if (getConfig()->hasChild("diffuse"))
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suppliedColors |= DIFFUSE;
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if (getConfig()->hasChild("specular"))
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suppliedColors |= SPECULAR;
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if (getConfig()->hasChild("emission"))
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suppliedColors |= EMISSION;
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if (getConfig()->hasChild("shininess")
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|| getConfig()->hasChild("shininess-prop"))
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suppliedColors |= SHININESS;
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if (getConfig()->hasChild("transparency"))
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suppliedColors |= TRANSPARENCY;
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if (suppliedColors != 0) {
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osg::StateSet* stateSet = group->getOrCreateStateSet();
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osg::Material* mat;
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if (defaultMaterial.valid()) {
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mat = defaultMaterial.get();
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} else {
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mat = new osg::Material;
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mat->setColorMode(osg::Material::AMBIENT_AND_DIFFUSE);
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}
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mat->setDataVariance(osg::Object::DYNAMIC);
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unsigned defaultColorModeMask = 0;
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mat->setUpdateCallback(0); // Just to make sure.
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switch (mat->getColorMode()) {
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case osg::Material::OFF:
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defaultColorModeMask = 0;
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break;
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case osg::Material::AMBIENT:
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defaultColorModeMask = AMBIENT;
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break;
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case osg::Material::DIFFUSE:
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defaultColorModeMask = DIFFUSE;
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break;
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case osg::Material::AMBIENT_AND_DIFFUSE:
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defaultColorModeMask = AMBIENT | DIFFUSE;
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break;
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case osg::Material::SPECULAR:
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defaultColorModeMask = SPECULAR;
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break;
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case osg::Material::EMISSION:
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defaultColorModeMask = EMISSION;
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break;
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}
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// Copy the color found by traversing geometry into the material
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// in case we need to specify it (e.g., transparency) and it is
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// not specified by the animation.
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if (defaultAmbientDiffuse.x() >= 0) {
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if (defaultColorModeMask & AMBIENT)
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mat->setAmbient(osg::Material::FRONT_AND_BACK, defaultAmbientDiffuse);
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if (defaultColorModeMask & DIFFUSE)
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mat->setDiffuse(osg::Material::FRONT_AND_BACK, defaultAmbientDiffuse);
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}
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// Compute which colors in the animation override colors set via
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// colorMode / glColor, and set the colorMode for the animation's
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// material accordingly.
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if (suppliedColors & TRANSPARENCY) {
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// All colors will be affected by the material. Hope all the
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// defaults are fine, if needed.
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mat->setColorMode(osg::Material::OFF);
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} else if ((suppliedColors & defaultColorModeMask) != 0) {
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// First deal with the complicated AMBIENT/DIFFUSE case.
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if (defaultColorModeMask & AMBIENT_DIFFUSE != 0) {
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// glColor can supply colors not specified by the animation.
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unsigned matColorModeMask = ((~suppliedColors & defaultColorModeMask)
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& AMBIENT_DIFFUSE);
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if (matColorModeMask & DIFFUSE != 0)
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mat->setColorMode(osg::Material::DIFFUSE);
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else if (matColorModeMask & AMBIENT != 0)
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mat->setColorMode(osg::Material::AMBIENT);
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else
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mat->setColorMode(osg::Material::OFF);
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} else {
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// The animation overrides the glColor color.
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mat->setColorMode(osg::Material::OFF);
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}
|
||||
} else {
|
||||
// No overlap between the animation and color mode, so leave
|
||||
// the color mode alone.
|
||||
}
|
||||
stateSet->setAttribute(mat,(osg::StateAttribute::ON
|
||||
| osg::StateAttribute::OVERRIDE));
|
||||
}
|
||||
group->setUpdateCallback(new UpdateCallback(texturePathList,
|
||||
getCondition(),
|
||||
getConfig(), inputRoot));
|
||||
parent.addChild(group);
|
||||
return group;
|
||||
}
|
||||
@ -450,43 +503,12 @@ void
|
||||
SGMaterialAnimation::install(osg::Node& node)
|
||||
{
|
||||
SGAnimation::install(node);
|
||||
// make sure everything (except the texture attributes)
|
||||
// below is private to our model
|
||||
cloneDrawables(node);
|
||||
|
||||
// Remove all textures if required, they get replaced later on
|
||||
if (getConfig()->hasChild("texture") ||
|
||||
getConfig()->hasChild("texture-prop")) {
|
||||
removeTextureAttribute(node, 0, osg::StateAttribute::TEXTURE);
|
||||
removeTextureMode(node, 0, GL_TEXTURE_2D);
|
||||
MaterialDefaultsVisitor defaultsVisitor;
|
||||
node.accept(defaultsVisitor);
|
||||
if (defaultsVisitor.material.valid()) {
|
||||
defaultMaterial
|
||||
= static_cast<osg::Material*>(defaultsVisitor.material->clone(osg::CopyOp::SHALLOW_COPY));
|
||||
}
|
||||
// Remove all nested alphaFuncs
|
||||
if (getConfig()->hasChild("threshold") ||
|
||||
getConfig()->hasChild("threshold-prop"))
|
||||
removeAttribute(node, osg::StateAttribute::ALPHAFUNC);
|
||||
|
||||
ColorSpec ambient(getConfig()->getChild("ambient"), getModelRoot());
|
||||
ColorSpec diffuse(getConfig()->getChild("diffuse"), getModelRoot());
|
||||
ColorSpec specular(getConfig()->getChild("specular"), getModelRoot());
|
||||
ColorSpec emission(getConfig()->getChild("emission"), getModelRoot());
|
||||
PropSpec shininess("shininess", "shininess-prop",
|
||||
getConfig()->getChild("shininess"), getModelRoot());
|
||||
PropSpec transparency("alpha", "alpha-prop",
|
||||
getConfig()->getChild("transparency"), getModelRoot());
|
||||
|
||||
MaterialVisitor visitor;
|
||||
if (ambient.dirty())
|
||||
visitor.setAmbient(ambient.initialRgba());
|
||||
if (diffuse.dirty())
|
||||
visitor.setDiffuse(diffuse.initialRgba());
|
||||
if (specular.dirty())
|
||||
visitor.setSpecular(specular.initialRgba());
|
||||
if (emission.dirty())
|
||||
visitor.setEmission(emission.initialRgba());
|
||||
if (shininess.dirty())
|
||||
visitor.setShininess(shininess.getInitialValue());
|
||||
if (transparency.dirty())
|
||||
visitor.setAlpha(transparency.getInitialValue());
|
||||
node.accept(visitor);
|
||||
defaultAmbientDiffuse = defaultsVisitor.ambientDiffuse;
|
||||
}
|
||||
|
||||
|
||||
@ -11,6 +11,7 @@
|
||||
# error This library requires C++
|
||||
#endif
|
||||
|
||||
#include <osg/Material>
|
||||
#include "animation.hxx"
|
||||
|
||||
//////////////////////////////////////////////////////////////////////
|
||||
@ -24,10 +25,8 @@ public:
|
||||
virtual osg::Group* createAnimationGroup(osg::Group& parent);
|
||||
virtual void install(osg::Node& node);
|
||||
private:
|
||||
struct ColorSpec;
|
||||
struct PropSpec;
|
||||
class MaterialVisitor;
|
||||
class UpdateCallback;
|
||||
osg::ref_ptr<osg::Material> defaultMaterial;
|
||||
osg::Vec4 defaultAmbientDiffuse;
|
||||
};
|
||||
|
||||
#endif // _SG_MATERIALANIMATION_HXX
|
||||
|
||||
Loading…
Reference in New Issue
Block a user