3 * Copyright (C) 2008 Stuart Buchanan
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of the
8 * License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
22 #ifndef CLOUD_SHADER_GEOMETRY_HXX
23 #define CLOUD_SHADER_GEOMETRY_HXX 1
27 #include <osg/BoundingBox>
29 #include <osg/Drawable>
30 #include <osg/Geometry>
31 #include <osg/RenderInfo>
34 #include <osg/buffered_value>
35 #include <osg/Version>
37 #include <simgear/math/SGMath.hxx>
38 #include <simgear/math/sg_random.h>
44 class CloudShaderGeometry : public osg::Drawable
48 const static unsigned int USR_ATTR_1 = 10;
49 const static unsigned int USR_ATTR_2 = 11;
50 const static unsigned int USR_ATTR_3 = 12;
54 setUseDisplayList(false);
57 CloudShaderGeometry(int vx, int vy, float width, float height, float ts, float ms, float bs, float shade, float ch, float zsc) :
58 varieties_x(vx), varieties_y(vy), top_factor(ts), middle_factor(ms), bottom_factor(bs), shade_factor(shade), cloud_height(ch), zscale(zsc)
60 setUseDisplayList(false);
62 float z = height/2.0f;
63 _bbox.expandBy(-x, -x, -z);
64 _bbox.expandBy(x, x, z);
67 /** Copy constructor using CopyOp to manage deep vs shallow copy.*/
68 CloudShaderGeometry(const CloudShaderGeometry& CloudShaderGeometry,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY):
69 osg::Drawable(CloudShaderGeometry,copyop) {}
71 META_Object(flightgear, CloudShaderGeometry);
74 CloudSprite(const SGVec3f& p, int tx, int ty, float w, float h) :
75 position(p), texture_index_x(tx), texture_index_y(ty), width(w), height(h)
85 typedef std::vector<CloudSprite> CloudSpriteList;
86 CloudSpriteList _cloudsprites;
88 void insert(const CloudSprite& t)
89 { _cloudsprites.push_back(t); }
90 void insert(SGVec3f& p, int tx, int ty, float w, float h)
91 { insert(CloudSprite(p, tx, ty, w, h)); }
93 unsigned getNumCloudSprite() const
94 { return _cloudsprites.size(); }
95 CloudSprite& getCloudSprite(unsigned i)
96 { return _cloudsprites[i]; }
98 virtual void drawImplementation(osg::RenderInfo& renderInfo) const;
99 virtual osg::BoundingBox
100 #if OSG_VERSION_LESS_THAN(3,3,2)
110 void addSprite(const SGVec3f& p, int tx, int ty, float w, float h, float cull);
111 void generateGeometry();
112 void rebuildGeometry();
114 osg::ref_ptr<osg::Drawable> _geometry;
125 // Bounding box extents.
126 osg::BoundingBox _bbox;
132 SortItem(size_t idx_, float depth_) : idx(idx_), depth(depth_) {}
133 SortItem() : idx(0), depth(0.0f) {}
137 SortData() : frameSorted(0), skip_limit(1), spriteIdx(0) {}
140 // This will be sorted by Z distance
141 typedef std::vector<SortItem> SortItemList;
142 SortItemList* spriteIdx;
145 mutable osg::buffered_object<SortData> _sortData;
147 virtual ~CloudShaderGeometry()
149 for (unsigned int i = 0; i < _sortData.size(); ++i)
150 delete _sortData[i].spriteIdx;