point_cloud.cpp
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00001 /*
00002  * Copyright (c) 2008, Willow Garage, Inc.
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions are met:
00007  *
00008  *     * Redistributions of source code must retain the above copyright
00009  *       notice, this list of conditions and the following disclaimer.
00010  *     * Redistributions in binary form must reproduce the above copyright
00011  *       notice, this list of conditions and the following disclaimer in the
00012  *       documentation and/or other materials provided with the distribution.
00013  *     * Neither the name of the Willow Garage, Inc. nor the names of its
00014  *       contributors may be used to endorse or promote products derived from
00015  *       this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00018  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
00021  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00022  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00023  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00024  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00025  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00026  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00027  * POSSIBILITY OF SUCH DAMAGE.
00028  */
00029 
00030 #include "point_cloud.h"
00031 #include <ros/assert.h>
00032 
00033 #include <OGRE/OgreSceneManager.h>
00034 #include <OGRE/OgreSceneNode.h>
00035 #include <OGRE/OgreVector3.h>
00036 #include <OGRE/OgreQuaternion.h>
00037 #include <OGRE/OgreManualObject.h>
00038 #include <OGRE/OgreMaterialManager.h>
00039 #include <OGRE/OgreBillboardSet.h>
00040 #include <OGRE/OgreBillboard.h>
00041 #include <OGRE/OgreTexture.h>
00042 #include <OGRE/OgreTextureManager.h>
00043 
00044 #include <sstream>
00045 
00046 #define VERTEX_BUFFER_CAPACITY (36 * 1024 * 10)
00047 #define SIZE_PARAMETER 0
00048 #define ALPHA_PARAMETER 1
00049 #define PICK_COLOR_PARAMETER 2
00050 #define NORMAL_PARAMETER 3
00051 #define UP_PARAMETER 4
00052 #define HIGHLIGHT_PARAMETER 5
00053 
00054 namespace ogre_tools
00055 {
00056 
00057 static float g_point_vertices[3] =
00058 {
00059   0.0f, 0.0f, 0.0f
00060 };
00061 
00062 static float g_billboard_vertices[6*3] =
00063 {
00064   -0.5f, 0.5f, 0.0f,
00065   -0.5f, -0.5f, 0.0f,
00066   0.5f, 0.5f, 0.0f,
00067   0.5f, 0.5f, 0.0f,
00068   -0.5f, -0.5f, 0.0f,
00069   0.5f, -0.5f, 0.0f,
00070 };
00071 
00072 static float g_billboard_sphere_vertices[3*3] =
00073 {
00074   0.0f, 1.5f, 0.0f,
00075   -1.5f, -1.5f, 0.0f,
00076   1.5f, -1.5f, 0.0f,
00077 };
00078 
00079 static float g_box_vertices[6*6*3] =
00080 {
00081   // front
00082   -0.5f, 0.5f, -0.5f,
00083   -0.5f, -0.5f, -0.5f,
00084   0.5f, 0.5f, -0.5f,
00085   0.5f, 0.5f, -0.5f,
00086   -0.5f, -0.5f, -0.5f,
00087   0.5f, -0.5f, -0.5f,
00088 
00089   // back
00090   -0.5f, 0.5f, 0.5f,
00091   0.5f, 0.5f, 0.5f,
00092   -0.5f, -0.5f, 0.5f,
00093   0.5f, 0.5f, 0.5f,
00094   0.5f, -0.5f, 0.5f,
00095   -0.5f, -0.5f, 0.5f,
00096 
00097   // right
00098   0.5, 0.5, 0.5,
00099   0.5, 0.5, -0.5,
00100   0.5, -0.5, 0.5,
00101   0.5, 0.5, -0.5,
00102   0.5, -0.5, -0.5,
00103   0.5, -0.5, 0.5,
00104 
00105   // left
00106   -0.5, 0.5, 0.5,
00107   -0.5, -0.5, 0.5,
00108   -0.5, 0.5, -0.5,
00109   -0.5, 0.5, -0.5,
00110   -0.5, -0.5, 0.5,
00111   -0.5, -0.5, -0.5,
00112 
00113   // top
00114   -0.5, 0.5, -0.5,
00115   0.5, 0.5, -0.5,
00116   -0.5, 0.5, 0.5,
00117   0.5, 0.5, -0.5,
00118   0.5, 0.5, 0.5,
00119   -0.5, 0.5, 0.5,
00120 
00121   // bottom
00122   -0.5, -0.5, -0.5,
00123   -0.5, -0.5, 0.5,
00124   0.5, -0.5, -0.5,
00125   0.5, -0.5, -0.5,
00126   -0.5, -0.5, 0.5,
00127   0.5, -0.5, 0.5,
00128 };
00129 
00130 Ogre::String PointCloud::sm_Type = "PointCloud";
00131 
00132 PointCloud::PointCloud()
00133 : bounding_radius_( 0.0f )
00134 , point_count_( 0 )
00135 , common_direction_( Ogre::Vector3::NEGATIVE_UNIT_Z )
00136 , common_up_vector_( Ogre::Vector3::UNIT_Y )
00137 , color_by_index_(false)
00138 , current_mode_supports_geometry_shader_(false)
00139 {
00140   std::stringstream ss;
00141   static int count = 0;
00142   ss << "PointCloudMaterial" << count++;
00143   point_material_ = Ogre::MaterialManager::getSingleton().getByName("ogre_tools/PointCloudPoint");
00144   point_material_ = point_material_->clone(ss.str() + "Point");
00145   billboard_material_ = Ogre::MaterialManager::getSingleton().getByName("ogre_tools/PointCloudBillboard");
00146   billboard_material_ = billboard_material_->clone(ss.str() + "Billboard");
00147   billboard_sphere_material_ = Ogre::MaterialManager::getSingleton().getByName("ogre_tools/PointCloudBillboardSphere");
00148   billboard_sphere_material_ = billboard_sphere_material_->clone(ss.str() + "BillboardSphere");
00149   billboard_common_facing_material_ = Ogre::MaterialManager::getSingleton().getByName("ogre_tools/PointCloudBillboardCommonFacing");
00150   billboard_common_facing_material_ = billboard_common_facing_material_->clone(ss.str() + "BillboardCommonFacing");
00151   box_material_ = Ogre::MaterialManager::getSingleton().getByName("ogre_tools/PointCloudBox");
00152   box_material_ = box_material_->clone(ss.str() + "Box");
00153 
00154   point_material_->load();
00155   billboard_material_->load();
00156   billboard_sphere_material_->load();
00157   billboard_common_facing_material_->load();
00158   box_material_->load();
00159 
00160   setAlpha( 1.0f );
00161   setRenderMode(RM_BILLBOARD_SPHERES);
00162   setDimensions(0.01f, 0.01f, 0.01f);
00163 
00164   clear();
00165 }
00166 
00167 PointCloud::~PointCloud()
00168 {
00169   point_material_->unload();
00170   billboard_material_->unload();
00171   billboard_sphere_material_->unload();
00172   billboard_common_facing_material_->unload();
00173   box_material_->unload();
00174 }
00175 
00176 const Ogre::AxisAlignedBox& PointCloud::getBoundingBox() const
00177 {
00178   return bounding_box_;
00179 }
00180 
00181 float PointCloud::getBoundingRadius() const
00182 {
00183   return bounding_radius_;
00184 }
00185 
00186 void PointCloud::getWorldTransforms(Ogre::Matrix4* xform) const
00187 {
00188   *xform = _getParentNodeFullTransform();
00189 }
00190 
00191 void PointCloud::clear()
00192 {
00193   point_count_ = 0;
00194   bounding_box_.setNull();
00195   bounding_radius_ = 0.0f;
00196 
00197   V_PointCloudRenderable::iterator it = renderables_.begin();
00198   V_PointCloudRenderable::iterator end = renderables_.end();
00199   for (; it != end; ++it)
00200   {
00201     (*it)->getRenderOperation()->vertexData->vertexStart = 0;
00202     (*it)->getRenderOperation()->vertexData->vertexCount = 0;
00203   }
00204 
00205   if (getParentSceneNode())
00206   {
00207     getParentSceneNode()->needUpdate();
00208   }
00209 }
00210 
00211 void PointCloud::regenerateAll()
00212 {
00213   if (point_count_ == 0)
00214   {
00215     return;
00216   }
00217 
00218   V_Point points;
00219   points.swap(points_);
00220   uint32_t count = point_count_;
00221 
00222   clear();
00223 
00224   addPoints(&points.front(), count);
00225 }
00226 
00227 void PointCloud::setColorByIndex(bool set)
00228 {
00229   color_by_index_ = set;
00230 
00231   regenerateAll();
00232 }
00233 
00234 void PointCloud::setHighlightColor( float r, float g, float b )
00235 {
00236   Ogre::Vector4 highlight( r, g, b, 0.0f );
00237 
00238   V_PointCloudRenderable::iterator it = renderables_.begin();
00239   V_PointCloudRenderable::iterator end = renderables_.end();
00240   for (; it != end; ++it)
00241   {
00242     (*it)->setCustomParameter(HIGHLIGHT_PARAMETER, highlight);
00243   }
00244 }
00245 
00246 void PointCloud::setRenderMode(RenderMode mode)
00247 {
00248   render_mode_ = mode;
00249 
00250   if (mode == RM_POINTS)
00251   {
00252     current_material_ = point_material_;
00253   }
00254   else if (mode == RM_BILLBOARDS)
00255   {
00256     current_material_ = billboard_material_;
00257   }
00258   else if (mode == RM_BILLBOARD_SPHERES)
00259   {
00260     current_material_ = billboard_sphere_material_;
00261   }
00262   else if (mode == RM_BILLBOARDS_COMMON_FACING)
00263   {
00264     current_material_ = billboard_common_facing_material_;
00265   }
00266   else if (mode == RM_BOXES)
00267   {
00268     current_material_ = box_material_;
00269   }
00270 
00271   current_material_->load();
00272 
00273   //ROS_INFO("Best technique [%s] [gp=%s]", current_material_->getBestTechnique()->getName().c_str(), current_material_->getBestTechnique()->getPass(0)->getGeometryProgramName().c_str());
00274 
00275   bool geom_support_changed = false;
00276   Ogre::Technique* best = current_material_->getBestTechnique();
00277   if (best)
00278   {
00279     if (current_material_->getBestTechnique()->getName() == "gp")
00280     {
00281       if (!current_mode_supports_geometry_shader_)
00282       {
00283         geom_support_changed = true;
00284       }
00285 
00286       current_mode_supports_geometry_shader_ = true;
00287 
00288       //ROS_INFO("Using geometry shader");
00289     }
00290     else
00291     {
00292       if (current_mode_supports_geometry_shader_)
00293       {
00294         geom_support_changed = true;
00295       }
00296 
00297       current_mode_supports_geometry_shader_ = false;
00298     }
00299   }
00300   else
00301   {
00302     geom_support_changed = true;
00303     current_mode_supports_geometry_shader_ = false;
00304 
00305     ROS_ERROR("No techniques available for material [%s]", current_material_->getName().c_str());
00306   }
00307 
00308   if (geom_support_changed)
00309   {
00310     renderables_.clear();
00311   }
00312 
00313   V_PointCloudRenderable::iterator it = renderables_.begin();
00314   V_PointCloudRenderable::iterator end = renderables_.end();
00315   for (; it != end; ++it)
00316   {
00317     (*it)->setMaterial(current_material_->getName());
00318   }
00319 
00320   regenerateAll();
00321 }
00322 
00323 void PointCloud::setDimensions(float width, float height, float depth)
00324 {
00325   width_ = width;
00326   height_ = height;
00327   depth_ = depth;
00328 
00329   Ogre::Vector4 size(width_, height_, depth_, 0.0f);
00330 
00331   V_PointCloudRenderable::iterator it = renderables_.begin();
00332   V_PointCloudRenderable::iterator end = renderables_.end();
00333   for (; it != end; ++it)
00334   {
00335     (*it)->setCustomParameter(SIZE_PARAMETER, size);
00336   }
00337 }
00338 
00339 void PointCloud::setCommonDirection(const Ogre::Vector3& vec)
00340 {
00341   common_direction_ = vec;
00342 
00343   V_PointCloudRenderable::iterator it = renderables_.begin();
00344   V_PointCloudRenderable::iterator end = renderables_.end();
00345   for (; it != end; ++it)
00346   {
00347     (*it)->setCustomParameter(NORMAL_PARAMETER, Ogre::Vector4(vec));
00348   }
00349 }
00350 
00351 void PointCloud::setCommonUpVector(const Ogre::Vector3& vec)
00352 {
00353   common_up_vector_ = vec;
00354 
00355   V_PointCloudRenderable::iterator it = renderables_.begin();
00356   V_PointCloudRenderable::iterator end = renderables_.end();
00357   for (; it != end; ++it)
00358   {
00359     (*it)->setCustomParameter(UP_PARAMETER, Ogre::Vector4(vec));
00360   }
00361 }
00362 
00363 void setAlphaBlending(const Ogre::MaterialPtr& mat)
00364 {
00365   if (mat->getBestTechnique())
00366   {
00367     mat->getBestTechnique()->setSceneBlending( Ogre::SBT_TRANSPARENT_ALPHA );
00368     mat->getBestTechnique()->setDepthWriteEnabled( false );
00369   }
00370 }
00371 
00372 void setReplace(const Ogre::MaterialPtr& mat)
00373 {
00374   if (mat->getBestTechnique())
00375   {
00376     mat->getBestTechnique()->setSceneBlending( Ogre::SBT_REPLACE );
00377     mat->getBestTechnique()->setDepthWriteEnabled( true );
00378   }
00379 }
00380 
00381 void PointCloud::setAlpha(float alpha)
00382 {
00383   alpha_ = alpha;
00384 
00385   if ( alpha < 0.9998 )
00386   {
00387     setAlphaBlending(point_material_);
00388     setAlphaBlending(billboard_material_);
00389     setAlphaBlending(billboard_sphere_material_);
00390     setAlphaBlending(billboard_common_facing_material_);
00391     setAlphaBlending(box_material_);
00392   }
00393   else
00394   {
00395     setReplace(point_material_);
00396     setReplace(billboard_material_);
00397     setReplace(billboard_sphere_material_);
00398     setReplace(billboard_common_facing_material_);
00399     setReplace(box_material_);
00400   }
00401 
00402   Ogre::Vector4 alpha4(alpha_, alpha_, alpha_, alpha_);
00403   V_PointCloudRenderable::iterator it = renderables_.begin();
00404   V_PointCloudRenderable::iterator end = renderables_.end();
00405   for (; it != end; ++it)
00406   {
00407     (*it)->setCustomParameter(ALPHA_PARAMETER, alpha4);
00408   }
00409 }
00410 
00411 void PointCloud::addPoints(Point* points, uint32_t num_points)
00412 {
00413   if (num_points == 0)
00414   {
00415     return;
00416   }
00417 
00418   Ogre::Root* root = Ogre::Root::getSingletonPtr();
00419 
00420   if ( points_.size() < point_count_ + num_points )
00421   {
00422     points_.resize( point_count_ + num_points );
00423   }
00424 
00425   Point* begin = &points_.front() + point_count_;
00426   memcpy( begin, points, sizeof( Point ) * num_points );
00427 
00428   uint32_t vpp = getVerticesPerPoint();
00429   Ogre::RenderOperation::OperationType op_type;
00430   if (current_mode_supports_geometry_shader_)
00431   {
00432     op_type = Ogre::RenderOperation::OT_POINT_LIST;
00433   }
00434   else
00435   {
00436     if (render_mode_ == RM_POINTS)
00437     {
00438       op_type = Ogre::RenderOperation::OT_POINT_LIST;
00439     }
00440     else
00441     {
00442       op_type = Ogre::RenderOperation::OT_TRIANGLE_LIST;
00443     }
00444   }
00445 
00446   float* vertices = 0;
00447   if (current_mode_supports_geometry_shader_)
00448   {
00449     vertices = g_point_vertices;
00450   }
00451   else
00452   {
00453     if (render_mode_ == RM_POINTS)
00454     {
00455       vertices = g_point_vertices;
00456     }
00457     else if (render_mode_ == RM_BILLBOARDS)
00458     {
00459       vertices = g_billboard_vertices;
00460     }
00461     else if (render_mode_ == RM_BILLBOARD_SPHERES)
00462     {
00463       vertices = g_billboard_sphere_vertices;
00464     }
00465     else if (render_mode_ == RM_BILLBOARDS_COMMON_FACING)
00466     {
00467       vertices = g_billboard_vertices;
00468     }
00469     else if (render_mode_ == RM_BOXES)
00470     {
00471       vertices = g_box_vertices;
00472     }
00473   }
00474 
00475   PointCloudRenderablePtr rend;
00476   Ogre::HardwareVertexBufferSharedPtr vbuf;
00477   void* vdata = 0;
00478   Ogre::RenderOperation* op = 0;
00479   float* fptr = 0;
00480 
00481   Ogre::AxisAlignedBox aabb;
00482   aabb.setNull();
00483   uint32_t current_vertex_count = 0;
00484   bounding_radius_ = 0.0f;
00485   uint32_t vertex_size = 0;
00486   for (uint32_t current_point = 0; current_point < num_points; ++current_point)
00487   {
00488     while (current_vertex_count >= VERTEX_BUFFER_CAPACITY || !rend)
00489     {
00490       if (rend)
00491       {
00492         ROS_ASSERT(current_vertex_count == VERTEX_BUFFER_CAPACITY);
00493 
00494         op->vertexData->vertexCount = VERTEX_BUFFER_CAPACITY - op->vertexData->vertexStart;
00495         ROS_ASSERT(op->vertexData->vertexCount + op->vertexData->vertexStart <= VERTEX_BUFFER_CAPACITY);
00496         vbuf->unlock();
00497         rend->setBoundingBox(aabb);
00498       }
00499 
00500       rend = getOrCreateRenderable();
00501       vbuf = rend->getBuffer();
00502       vdata = vbuf->lock(Ogre::HardwareBuffer::HBL_NO_OVERWRITE);
00503 
00504       op = rend->getRenderOperation();
00505       op->operationType = op_type;
00506       current_vertex_count = op->vertexData->vertexStart + op->vertexData->vertexCount;
00507 
00508       vertex_size = op->vertexData->vertexDeclaration->getVertexSize(0);
00509       uint32_t data_pos = current_vertex_count * vertex_size;
00510       fptr = (float*)((uint8_t*)vdata + data_pos);
00511 
00512       aabb.setNull();
00513     }
00514 
00515     const Point& p = points[current_point];
00516     float x = p.x;
00517     float y = p.y;
00518     float z = p.z;
00519     uint32_t color = p.color;
00520 
00521     if (color_by_index_)
00522     {
00523       // convert to ColourValue, so we can then convert to the rendersystem-specific color type
00524       color = (current_point + point_count_ + 1);
00525       Ogre::ColourValue c;
00526       c.a = 1.0f;
00527       c.r = ((color >> 16) & 0xff) / 255.0f;
00528       c.g = ((color >> 8) & 0xff) / 255.0f;
00529       c.b = (color & 0xff) / 255.0f;
00530       root->convertColourValue(c, &color);
00531     }
00532 
00533     Ogre::Vector3 pos(x, y, z);
00534     aabb.merge(pos);
00535     bounding_box_.merge( pos );
00536     bounding_radius_ = std::max( bounding_radius_, pos.squaredLength() );
00537 
00538     for (uint32_t j = 0; j < vpp; ++j, ++current_vertex_count)
00539     {
00540       *fptr++ = x;
00541       *fptr++ = y;
00542       *fptr++ = z;
00543 
00544       if (!current_mode_supports_geometry_shader_)
00545       {
00546         *fptr++ = vertices[(j*3)];
00547         *fptr++ = vertices[(j*3) + 1];
00548         *fptr++ = vertices[(j*3) + 2];
00549       }
00550 
00551       uint32_t* iptr = (uint32_t*)fptr;
00552       *iptr = color;
00553       ++fptr;
00554 
00555       ROS_ASSERT((uint8_t*)fptr <= (uint8_t*)vdata + VERTEX_BUFFER_CAPACITY * vertex_size);
00556     }
00557   }
00558 
00559   op->vertexData->vertexCount = current_vertex_count - op->vertexData->vertexStart;
00560   rend->setBoundingBox(aabb);
00561   ROS_ASSERT(op->vertexData->vertexCount + op->vertexData->vertexStart <= VERTEX_BUFFER_CAPACITY);
00562 
00563   vbuf->unlock();
00564 
00565   point_count_ += num_points;
00566 
00567   shrinkRenderables();
00568 
00569   if (getParentSceneNode())
00570   {
00571     getParentSceneNode()->needUpdate();
00572   }
00573 }
00574 
00575 void PointCloud::popPoints(uint32_t num_points)
00576 {
00577   uint32_t vpp = getVerticesPerPoint();
00578 
00579   ROS_ASSERT(num_points <= point_count_);
00580   points_.erase(points_.begin(), points_.begin() + num_points);
00581 
00582   point_count_ -= num_points;
00583 
00584   // Now clear out popped points
00585   uint32_t popped_count = 0;
00586   while (popped_count < num_points * vpp)
00587   {
00588     PointCloudRenderablePtr rend = renderables_.front();
00589     Ogre::RenderOperation* op = rend->getRenderOperation();
00590 
00591     uint32_t popped = std::min((size_t)(num_points * vpp - popped_count), op->vertexData->vertexCount);
00592     op->vertexData->vertexStart += popped;
00593     op->vertexData->vertexCount -= popped;
00594 
00595     popped_count += popped;
00596 
00597     if (op->vertexData->vertexCount == 0)
00598     {
00599       renderables_.erase(renderables_.begin(), renderables_.begin() + 1);
00600 
00601       op->vertexData->vertexStart = 0;
00602       renderables_.push_back(rend);
00603     }
00604   }
00605   ROS_ASSERT(popped_count == num_points * vpp);
00606 
00607   // reset bounds
00608   bounding_box_.setNull();
00609   bounding_radius_ = 0.0f;
00610   for (uint32_t i = 0; i < point_count_; ++i)
00611   {
00612     Point& p = points_[i];
00613     Ogre::Vector3 pos(p.x, p.y, p.z);
00614     bounding_box_.merge(pos);
00615     bounding_radius_ = std::max(bounding_radius_, pos.squaredLength());
00616   }
00617 
00618   shrinkRenderables();
00619 
00620   if (getParentSceneNode())
00621   {
00622     getParentSceneNode()->needUpdate();
00623   }
00624 }
00625 
00626 void PointCloud::shrinkRenderables()
00627 {
00628   while (!renderables_.empty())
00629   {
00630     PointCloudRenderablePtr rend = renderables_.back();
00631     Ogre::RenderOperation* op = rend->getRenderOperation();
00632     if (op->vertexData->vertexCount == 0)
00633     {
00634       renderables_.pop_back();
00635     }
00636     else
00637     {
00638       break;
00639     }
00640   }
00641 }
00642 
00643 void PointCloud::_notifyCurrentCamera(Ogre::Camera* camera)
00644 {
00645   MovableObject::_notifyCurrentCamera( camera );
00646 }
00647 
00648 void PointCloud::_updateRenderQueue(Ogre::RenderQueue* queue)
00649 {
00650   V_PointCloudRenderable::iterator it = renderables_.begin();
00651   V_PointCloudRenderable::iterator end = renderables_.end();
00652   for (; it != end; ++it)
00653   {
00654     queue->addRenderable((*it).get());
00655   }
00656 }
00657 
00658 void PointCloud::_notifyAttached(Ogre::Node *parent, bool isTagPoint)
00659 {
00660   MovableObject::_notifyAttached(parent, isTagPoint);
00661 }
00662 
00663 uint32_t PointCloud::getVerticesPerPoint()
00664 {
00665   if (current_mode_supports_geometry_shader_)
00666   {
00667     return 1;
00668   }
00669 
00670   if (render_mode_ == RM_POINTS)
00671   {
00672     return 1;
00673   }
00674 
00675   if (render_mode_ == RM_BILLBOARDS)
00676   {
00677     return 6;
00678   }
00679 
00680   if (render_mode_ == RM_BILLBOARDS_COMMON_FACING)
00681     {
00682       return 6;
00683     }
00684 
00685   if (render_mode_ == RM_BILLBOARD_SPHERES)
00686   {
00687     return 3;
00688   }
00689 
00690   if (render_mode_ == RM_BOXES)
00691   {
00692     return 36;
00693   }
00694 
00695   return 1;
00696 }
00697 
00698 void PointCloud::setPickColor(const Ogre::ColourValue& color)
00699 {
00700   pick_color_ = color;
00701   Ogre::Vector4 pick_col(pick_color_.r, pick_color_.g, pick_color_.b, pick_color_.a);
00702 
00703   V_PointCloudRenderable::iterator it = renderables_.begin();
00704   V_PointCloudRenderable::iterator end = renderables_.end();
00705   for (; it != end; ++it)
00706   {
00707     (*it)->setCustomParameter(PICK_COLOR_PARAMETER, pick_col);
00708   }
00709 }
00710 
00711 PointCloudRenderablePtr PointCloud::getOrCreateRenderable()
00712 {
00713   V_PointCloudRenderable::iterator it = renderables_.begin();
00714   V_PointCloudRenderable::iterator end = renderables_.end();
00715   for (; it != end; ++it)
00716   {
00717     const PointCloudRenderablePtr& rend = *it;
00718     Ogre::RenderOperation* op = rend->getRenderOperation();
00719     if (op->vertexData->vertexCount + op->vertexData->vertexStart < VERTEX_BUFFER_CAPACITY)
00720     {
00721       return rend;
00722     }
00723   }
00724 
00725   PointCloudRenderablePtr rend(new PointCloudRenderable(this, !current_mode_supports_geometry_shader_));
00726   rend->setMaterial(current_material_->getName());
00727   Ogre::Vector4 size(width_, height_, depth_, 0.0f);
00728   Ogre::Vector4 alpha(alpha_, 0.0f, 0.0f, 0.0f);
00729   Ogre::Vector4 highlight(0.0f, 0.0f, 0.0f, 0.0f);
00730   Ogre::Vector4 pick_col(pick_color_.r, pick_color_.g, pick_color_.b, pick_color_.a);
00731   rend->setCustomParameter(SIZE_PARAMETER, size);
00732   rend->setCustomParameter(ALPHA_PARAMETER, alpha);
00733   rend->setCustomParameter(HIGHLIGHT_PARAMETER, highlight);
00734   rend->setCustomParameter(PICK_COLOR_PARAMETER, pick_col);
00735   rend->setCustomParameter(NORMAL_PARAMETER, Ogre::Vector4(common_direction_));
00736   rend->setCustomParameter(UP_PARAMETER, Ogre::Vector4(common_up_vector_));
00737   if (getParentSceneNode())
00738   {
00739     getParentSceneNode()->attachObject(rend.get());
00740   }
00741   renderables_.push_back(rend);
00742 
00743   return rend;
00744 }
00745 
00746 #if (OGRE_VERSION_MAJOR >= 1 && OGRE_VERSION_MINOR >= 6)
00747 void PointCloud::visitRenderables(Ogre::Renderable::Visitor* visitor, bool debugRenderables)
00748 {
00749 
00750 }
00751 #endif
00752 
00753 
00757 
00758 PointCloudRenderable::PointCloudRenderable(PointCloud* parent, bool use_tex_coords)
00759 : parent_(parent)
00760 {
00761   // Initialize render operation
00762   mRenderOp.operationType = Ogre::RenderOperation::OT_POINT_LIST;
00763   mRenderOp.useIndexes = false;
00764   mRenderOp.vertexData = new Ogre::VertexData;
00765   mRenderOp.vertexData->vertexStart = 0;
00766   mRenderOp.vertexData->vertexCount = 0;
00767 
00768   Ogre::VertexDeclaration *decl = mRenderOp.vertexData->vertexDeclaration;
00769   size_t offset = 0;
00770 
00771   decl->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
00772   offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
00773 
00774   if (use_tex_coords)
00775   {
00776     decl->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_TEXTURE_COORDINATES, 0);
00777     offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
00778   }
00779 
00780   decl->addElement(0, offset, Ogre::VET_COLOUR, Ogre::VES_DIFFUSE);
00781 
00782   Ogre::HardwareVertexBufferSharedPtr vbuf =
00783     Ogre::HardwareBufferManager::getSingleton().createVertexBuffer(
00784       mRenderOp.vertexData->vertexDeclaration->getVertexSize(0),
00785       VERTEX_BUFFER_CAPACITY,
00786       Ogre::HardwareBuffer::HBU_DYNAMIC);
00787 
00788   // Bind buffer
00789   mRenderOp.vertexData->vertexBufferBinding->setBinding(0, vbuf);
00790 }
00791 
00792 PointCloudRenderable::~PointCloudRenderable()
00793 {
00794   delete mRenderOp.vertexData;
00795   delete mRenderOp.indexData;
00796 }
00797 
00798 Ogre::HardwareVertexBufferSharedPtr PointCloudRenderable::getBuffer()
00799 {
00800   return mRenderOp.vertexData->vertexBufferBinding->getBuffer(0);
00801 }
00802 
00803 void PointCloudRenderable::_notifyCurrentCamera(Ogre::Camera* camera)
00804 {
00805   SimpleRenderable::_notifyCurrentCamera( camera );
00806 }
00807 
00808 Ogre::Real PointCloudRenderable::getBoundingRadius(void) const
00809 {
00810   return Ogre::Math::Sqrt(std::max(mBox.getMaximum().squaredLength(), mBox.getMinimum().squaredLength()));
00811 }
00812 
00813 Ogre::Real PointCloudRenderable::getSquaredViewDepth(const Ogre::Camera* cam) const
00814 {
00815   Ogre::Vector3 vMin, vMax, vMid, vDist;
00816    vMin = mBox.getMinimum();
00817    vMax = mBox.getMaximum();
00818    vMid = ((vMax - vMin) * 0.5) + vMin;
00819    vDist = cam->getDerivedPosition() - vMid;
00820 
00821    return vDist.squaredLength();
00822 }
00823 
00824 void PointCloudRenderable::getWorldTransforms(Ogre::Matrix4* xform) const
00825 {
00826    *xform = m_matWorldTransform * parent_->getParentNode()->_getFullTransform();
00827 }
00828 
00829 const Ogre::LightList& PointCloudRenderable::getLights() const
00830 {
00831   return parent_->queryLights();
00832 }
00833 
00834 } // namespace ogre_tools


ogre_tools_qt
Author(s): Josh Faust
autogenerated on Fri Dec 6 2013 20:56:42