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Diffstat (limited to 'src/MyBillboardSceneNode.cpp')
| -rw-r--r-- | src/MyBillboardSceneNode.cpp | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/MyBillboardSceneNode.cpp b/src/MyBillboardSceneNode.cpp new file mode 100644 index 000000000..0dfa59bed --- /dev/null +++ b/src/MyBillboardSceneNode.cpp @@ -0,0 +1,202 @@ +// Copyright (C) 2002-2010 Nikolaus Gebhardt
+// This file is part of the "Irrlicht Engine".
+// For conditions of distribution and use, see copyright notice in irrlicht.h
+
+#include "MyBillboardSceneNode.h"
+#include "IVideoDriver.h"
+#include "ISceneManager.h"
+#include "ICameraSceneNode.h"
+
+namespace irr
+{
+namespace scene
+{
+
+//! constructor
+MyBillboardSceneNode::MyBillboardSceneNode(ISceneNode* parent,
+ ISceneManager* mgr, s32 id,
+ const core::vector3df& position, const core::dimension2d<f32>& size)
+ : IBillboardSceneNode(parent, mgr, id, position)
+{
+ #ifdef _DEBUG
+ setDebugName("MyBillboardSceneNode");
+ #endif
+
+ setSize(size);
+
+ indices[0] = 0;
+ indices[1] = 2;
+ indices[2] = 1;
+ indices[3] = 0;
+ indices[4] = 3;
+ indices[5] = 2;
+
+ video::SColor colorTop = video::SColor(0xFFFFFFFF);
+ video::SColor colorBottom = video::SColor(0xFFFFFFFF);
+
+ vertices[0].TCoords.set(1.0f, 1.0f);
+ vertices[0].Color = colorBottom;
+
+ vertices[1].TCoords.set(1.0f, 0.0f);
+ vertices[1].Color = colorTop;
+
+ vertices[2].TCoords.set(0.0f, 0.0f);
+ vertices[2].Color = colorTop;
+
+ vertices[3].TCoords.set(0.0f, 1.0f);
+ vertices[3].Color = colorBottom;
+}
+
+
+//! pre render event
+void MyBillboardSceneNode::OnRegisterSceneNode()
+{
+ if (IsVisible)
+ SceneManager->registerNodeForRendering(this);
+
+ ISceneNode::OnRegisterSceneNode();
+}
+
+
+//! render
+void MyBillboardSceneNode::render()
+{
+ video::IVideoDriver* driver = SceneManager->getVideoDriver();
+ ICameraSceneNode* camera = SceneManager->getActiveCamera();
+
+ if (!camera || !driver)
+ return;
+
+ // make billboard look to camera
+
+ core::vector3df pos = getAbsolutePosition();
+
+ core::vector3df campos = camera->getAbsolutePosition();
+ core::vector3df target = camera->getTarget();
+ core::vector3df up = camera->getUpVector();
+ core::vector3df view = target - campos;
+ view.normalize();
+
+ core::vector3df horizontal = up.crossProduct(view);
+ if ( horizontal.getLength() == 0 )
+ {
+ horizontal.set(up.Y,up.X,up.Z);
+ }
+ horizontal.normalize();
+ horizontal *= 0.5f * Size.Width;
+
+ core::vector3df vertical = horizontal.crossProduct(view);
+ vertical.normalize();
+ vertical *= 0.5f * Size.Height;
+
+ view *= -1.0f;
+
+ for (s32 i=0; i<4; ++i)
+ vertices[i].Normal = view;
+
+ vertices[0].Pos = pos + horizontal + vertical;
+ vertices[1].Pos = pos + horizontal - vertical;
+ vertices[2].Pos = pos - horizontal - vertical;
+ vertices[3].Pos = pos - horizontal + vertical;
+
+ // draw
+
+ if ( DebugDataVisible & scene::EDS_BBOX )
+ {
+ driver->setTransform(video::ETS_WORLD, AbsoluteTransformation);
+ video::SMaterial m;
+ m.Lighting = false;
+ driver->setMaterial(m);
+ driver->draw3DBox(BBox, video::SColor(0,208,195,152));
+ }
+
+ driver->setTransform(video::ETS_WORLD, core::IdentityMatrix);
+
+ driver->setMaterial(Material);
+
+ driver->drawIndexedTriangleList(vertices, 4, indices, 2);
+}
+
+
+//! returns the axis aligned bounding box of this node
+const core::aabbox3d<f32>& MyBillboardSceneNode::getBoundingBox() const
+{
+ return BBox;
+}
+
+
+//! sets the size of the billboard
+void MyBillboardSceneNode::setSize(const core::dimension2d<f32>& size)
+{
+ Size = size;
+
+ if (Size.Width == 0.0f)
+ Size.Width = 1.0f;
+
+ if (Size.Height == 0.0f )
+ Size.Height = 1.0f;
+
+ f32 avg = (size.Width + size.Height)/6;
+ BBox.MinEdge.set(-avg,-avg,-avg);
+ BBox.MaxEdge.set(avg,avg,avg);
+}
+
+
+video::SMaterial& MyBillboardSceneNode::getMaterial(u32 i)
+{
+ return Material;
+}
+
+
+//! returns amount of materials used by this scene node.
+u32 MyBillboardSceneNode::getMaterialCount() const
+{
+ return 1;
+}
+
+
+//! gets the size of the billboard
+const core::dimension2d<f32>& MyBillboardSceneNode::getSize() const
+{
+ return Size;
+}
+
+
+//! Set the color of all vertices of the billboard
+//! \param overallColor: the color to set
+void MyBillboardSceneNode::setColor(const video::SColor & overallColor)
+{
+ for(u32 vertex = 0; vertex < 4; ++vertex)
+ vertices[vertex].Color = overallColor;
+}
+
+
+//! Set the color of the top and bottom vertices of the billboard
+//! \param topColor: the color to set the top vertices
+//! \param bottomColor: the color to set the bottom vertices
+void MyBillboardSceneNode::setColor(const video::SColor & topColor, const video::SColor & bottomColor)
+{
+ vertices[0].Color = bottomColor;
+ vertices[1].Color = topColor;
+ vertices[2].Color = topColor;
+ vertices[3].Color = bottomColor;
+}
+
+
+//! Gets the color of the top and bottom vertices of the billboard
+//! \param[out] topColor: stores the color of the top vertices
+//! \param[out] bottomColor: stores the color of the bottom vertices
+void MyBillboardSceneNode::getColor(video::SColor & topColor, video::SColor & bottomColor) const
+{
+ bottomColor = vertices[0].Color;
+ topColor = vertices[1].Color;
+}
+
+void MyBillboardSceneNode::setTCoords(u32 i, core::vector2d<f32> c)
+{
+ vertices[i].TCoords = c;
+}
+
+} // end namespace scene
+} // end namespace irr
+
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