root/OpenSceneGraph/trunk/examples/osgfxbrowser/Frame.cpp @ 6941

Revision 6941, 4.1 kB (checked in by robert, 7 years ago)

From Martin Lavery and Robert Osfield, Updated examples to use a variation of the MIT License

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
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1/* OpenSceneGraph example, osgfxbrowser.
2*
3*  Permission is hereby granted, free of charge, to any person obtaining a copy
4*  of this software and associated documentation files (the "Software"), to deal
5*  in the Software without restriction, including without limitation the rights
6*  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7*  copies of the Software, and to permit persons to whom the Software is
8*  furnished to do so, subject to the following conditions:
9*
10*  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
11*  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
12*  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
13*  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
14*  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
15*  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
16*  THE SOFTWARE.
17*/
18
19#include "Frame.h"
20
21#include <osgText/Text>
22
23namespace osgfxbrowser {
24
25Frame::Frame()
26:    osg::Geode(),
27    bgcolor_(0.5f, 0.5f, 0.5f, 1.0f),
28    rect_(0, 0, 100, 100),
29    caption_("Frame")
30{
31}
32
33Frame::Frame(const Frame &copy, const osg::CopyOp &copyop)
34:    osg::Geode(copy, copyop),
35    bgcolor_(copy.bgcolor_),
36    rect_(copy.rect_),
37    caption_(copy.caption_)
38{
39}
40
41void Frame::rebuild()
42{
43    float zPos = -0.1f;
44
45    removeDrawables(0, getNumDrawables());
46    addDrawable(build_quad(rect_, bgcolor_));
47    addDrawable(build_quad(Rect(rect_.x0 + 4, rect_.y1 - 24, rect_.x1 - 4, rect_.y1 - 4), osg::Vec4(0, 0, 0, bgcolor_.w()), false, zPos));
48
49    osg::ref_ptr<osgText::Text> caption_text = new osgText::Text;
50    caption_text->setText(caption_);
51    caption_text->setColor(osg::Vec4(1, 1, 1, 1));
52    caption_text->setAlignment(osgText::Text::CENTER_CENTER);
53    caption_text->setFont("fonts/arial.ttf");
54    caption_text->setCharacterSize(16);
55    caption_text->setFontResolution(16, 16);
56    caption_text->setPosition(osg::Vec3((rect_.x0 + rect_.x1) / 2, rect_.y1 - 15, zPos*2.0f));
57    addDrawable(caption_text.get());
58
59    rebuild_client_area(Rect(rect_.x0 + 4, rect_.y0 + 4, rect_.x1 - 4, rect_.y1 - 28));
60}
61
62osg::Geometry *Frame::build_quad(const Rect &rect, const osg::Vec4 &color, bool shadow, float z)
63{
64    const float shadow_space = 8;
65    const float shadow_size = 10;
66
67    osg::ref_ptr<osg::Geometry> geo = new osg::Geometry;
68    osg::ref_ptr<osg::Vec3Array> vx = new osg::Vec3Array;
69
70    vx->push_back(osg::Vec3(rect.x0, rect.y0, z));
71    vx->push_back(osg::Vec3(rect.x1, rect.y0, z));
72    vx->push_back(osg::Vec3(rect.x1, rect.y1, z));
73    vx->push_back(osg::Vec3(rect.x0, rect.y1, z));
74
75    if (shadow) {
76        vx->push_back(osg::Vec3(rect.x0+shadow_space, rect.y0-shadow_size, z));
77        vx->push_back(osg::Vec3(rect.x1+shadow_size, rect.y0-shadow_size, z));
78        vx->push_back(osg::Vec3(rect.x1, rect.y0, z));
79        vx->push_back(osg::Vec3(rect.x0+shadow_space, rect.y0, z));
80
81        vx->push_back(osg::Vec3(rect.x1, rect.y1-shadow_space, z));
82        vx->push_back(osg::Vec3(rect.x1, rect.y0, z));
83        vx->push_back(osg::Vec3(rect.x1+shadow_size, rect.y0-shadow_size, z));
84        vx->push_back(osg::Vec3(rect.x1+shadow_size, rect.y1-shadow_space, z));
85    }
86
87    geo->setVertexArray(vx.get());
88
89    osg::ref_ptr<osg::Vec4Array> clr = new osg::Vec4Array;
90    clr->push_back(color);
91    clr->push_back(color);
92    clr->push_back(color);
93    clr->push_back(color);
94
95    if (shadow) {
96
97        float alpha = color.w() * 0.5f;
98        const osg::Vec3 black(0, 0, 0);
99
100        clr->push_back(osg::Vec4(black, 0));
101        clr->push_back(osg::Vec4(black, 0));
102        clr->push_back(osg::Vec4(black, alpha));
103        clr->push_back(osg::Vec4(black, alpha));
104
105        clr->push_back(osg::Vec4(black, alpha));
106        clr->push_back(osg::Vec4(black, alpha));
107        clr->push_back(osg::Vec4(black, 0));
108        clr->push_back(osg::Vec4(black, 0));
109    }
110
111    geo->setColorArray(clr.get());
112    geo->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
113
114    geo->addPrimitiveSet(new osg::DrawArrays(GL_QUADS, 0, shadow? 12: 4));
115
116    return geo.release();
117}
118
119}
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