Added XML support and slideshow constructor to slideshow3D example, now

renamed from the previous osgslideshow.
2003-07-22 12:39:40 +00:00
parent 31115ffd2d
commit f7ad937020
12 changed files with 633 additions and 23 deletions
--- a/examples/slideshow3D/DefaultPresentation.cpp
+++ b/examples/slideshow3D/DefaultPresentation.cpp
@@ -0,0 +1,178 @@
+#include <osgDB/ReadFile>
+
+#include <osg/Switch>
+#include <osg/Texture2D>
+#include <osg/MatrixTransform>
+#include <osg/Quat>
+#include <osg/Geometry>
+#include <osg/Geode>
+#include <osg/PolygonOffset>
+
+#include <osgText/Text>
+
+osg::MatrixTransform* createPositionedAndScaledModel(osg::Node* model,const osg::Vec3& pos, float radius, osg::Quat rotation)
+{
+    osg::MatrixTransform* transform = new osg::MatrixTransform;
+    
+    const osg::BoundingSphere& bs = model->getBound();
+    
+    transform->setDataVariance(osg::Object::STATIC);
+    transform->setMatrix(osg::Matrix::translate(-bs.center())*
+                         osg::Matrix::scale(radius/bs.radius(),radius/bs.radius(),radius/bs.radius())*
+                         osg::Matrix::rotate(rotation)*
+                         osg::Matrix::translate(pos));
+                         
+    transform->addChild(model);
+    
+    return transform;
+}
+
+osg::Vec4 layoutColor(1.0f,1.0f,1.0f,1.0f);
+float layoutCharacterSize = 50.0f;
+std::string fontStr("fonts/arial.ttf");
+
+osg::Geode* createText(osg::Vec3& cursor,const std::string& str)
+{
+    osg::Geode* geode = new osg::Geode;
+
+    osgText::Text* text = new osgText::Text;
+    text->setFont(fontStr);
+    text->setColor(layoutColor);
+    text->setCharacterSize(layoutCharacterSize);
+    text->setAxisAlignment(osgText::Text::XZ_PLANE);
+    text->setPosition(cursor);
+    
+    text->setText(str);
+
+    osg::BoundingBox bb = text->getBound();
+    cursor.z() = bb.zMin()-layoutCharacterSize;
+
+    geode->addDrawable(text);
+    
+    return geode;
+}
+
+
+
+osg::Node* createDefaultPresentation()
+{
+    osg::Switch* presentation = new osg::Switch;
+    presentation->setName("Presentation default");
+    
+    float width = 1280.0f;
+    float height = 1024.0f;
+    
+    osg::Geometry* backgroundQuad = osg::createTexturedQuadGeometry(osg::Vec3(0.0f,0.0f,0.0f),
+                                                    osg::Vec3(width,0.0f,0.0f),
+                                                    osg::Vec3(0.0f,0.0f,height));
+                
+    osg::Geode* background = new osg::Geode;
+
+    osg::StateSet* backgroundStateSet = background->getOrCreateStateSet();
+    backgroundStateSet->setAttributeAndModes(
+                new osg::PolygonOffset(1.0f,1.0f),
+                osg::StateAttribute::ON);
+                                        
+    backgroundStateSet->setTextureAttributeAndModes(0,
+                new osg::Texture2D(osgDB::readImageFile("lz.rgb")),
+                osg::StateAttribute::ON);
+
+    background->addDrawable(backgroundQuad);
+
+    osg::Geode* background2 = new osg::Geode;
+    
+    background2->getOrCreateStateSet()->setTextureAttributeAndModes(0,
+                new osg::Texture2D(osgDB::readImageFile("reflect.rgb")),
+                osg::StateAttribute::ON);
+                
+    background2->addDrawable(backgroundQuad);
+
+    {
+        osg::Switch* slide = new osg::Switch;
+        slide->setName("Slide 0");
+
+        osg::Vec3 cursor(width*0.25f,0.0f,height*.75f);
+                
+        osg::Group* layer_0 = new osg::Group;
+        {
+        
+            layer_0->setName("Layer 0");
+            layer_0->addChild(background);
+            layer_0->addChild(createText(cursor,"The is layer 0"));
+
+            slide->addChild(layer_0);
+        }
+       
+        osg::Group* layer_1 = new osg::Group;
+        {
+            layer_1->setName("Layer 1");
+            layer_1->addChild(layer_0);
+            layer_1->addChild(createText(cursor,"The is layer 1"));
+
+            slide->addChild(layer_1);
+        }
+        
+        osg::Group* layer_2 = new osg::Group;
+        {
+            layer_2->setName("Layer 2");
+            layer_2->addChild(layer_1);
+            layer_2->addChild(createText(cursor,"The is layer 2\nWe can have multiple lines of text..."));
+
+            slide->addChild(layer_2);
+        }
+
+        {
+            osg::Group* layer_3 = new osg::Group;
+            layer_3->setName("Layer 3");
+            
+            layer_3->addChild(layer_2);
+
+            layer_3->addChild(createText(cursor,"The is layer 3, with cow.osg"));
+            
+            layer_3->addChild(createPositionedAndScaledModel(osgDB::readNodeFile("cow.osg"),
+                                                           osg::Vec3(600.0f,0.0f,300.0f),500.0f,
+                                                           osg::Quat()));
+
+            slide->addChild(layer_3);
+        }
+        
+        presentation->addChild(slide);        
+        
+    }
+    
+   {
+        osg::Switch* slide = new osg::Switch;
+        slide->setName("Slide 1");
+        
+        {
+            osg::Group* group = new osg::Group;
+            group->setName("Layer 0");
+            
+            group->addChild(background);
+            
+            group->addChild(createPositionedAndScaledModel(osgDB::readNodeFile("glider.osg"),
+                                                           osg::Vec3(600.0f,0.0f,600.0f),500.0f,
+                                                           osg::Quat()));
+
+            slide->addChild(group);
+        }
+        
+        {
+            osg::Group* group = new osg::Group;
+            group->setName("Layer 1");
+            
+            group->addChild(background2);
+            
+            group->addChild(createPositionedAndScaledModel(osgDB::readNodeFile("Town.osg"),
+                                                           osg::Vec3(600.0f,0.0f,600.0f),500.0f,
+                                                           osg::Quat()));
+
+            slide->addChild(group);
+        }
+
+        presentation->addChild(slide);        
+        
+    }
+
+    return presentation;
+}