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首页Geant4可视化命令全面指南
本资源是一份关于GEANT4可视化的关键文档,由Joseph Perl撰写,发布日期为2011年1月11日。这份文档详细介绍了如何在GEANT4(版本9.4)环境中利用OpenGL进行可视化操作,对于理解和掌握Geant4的图形化呈现至关重要。它旨在为用户提供一个全面的入门指南,特别适合结合其他教程材料一起学习。 "Geant4 Visualization Commands" 涵盖了基本的可视化功能,帮助用户通过HEPRep/HepRApp浏览器实现对粒子追踪和几何结构的直观展示。文档不仅阐述了如何独立使用该文档,还强调了它作为一套完整文档系列的一部分,与"Introduction to Geant4 Visualization"、安装指南(Geant4 Installation Guides)、HepRApp和HepRep浏览器教程、DAWN事件显示教程以及OpenGl事件显示教程等互补,共同构成了深入理解并实践Geant4图形化应用的基础。 通过阅读这份文档,用户可以了解到如何配置和调用可视化命令,如何实时观察粒子的运动轨迹,以及如何利用不同的工具优化图形渲染效果。此外,文档还可能涵盖了如何处理和解析几何模型,以及如何根据实际需求定制可视化界面。由于文档是针对初学者和经验丰富的用户,因此提供了从基础到高级的逐步指导,确保读者能够在GEANT4的可视化世界中游刃有余。 这份文档是一个宝贵的资源,无论是对于初次接触GEANT4视觉化的学习者,还是希望提升现有技能的开发者,都是不可或缺的参考资料。通过深入研究,用户可以更好地理解和利用GEANT4的强大可视化功能,从而在科学研究和工程实践中提高效率和可视化质量。
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11 January 2011
10Geant4 Visualization Commands J. Perl
To Open Visualization
To Open Visualization
To Open a Driver
To Open a Driver
/vis/open <driver name>
/vis/open <driver name>
for example
for example
/vis/open OGL
/vis/open OGL
/vis/open DAWNFILE
/vis/open DAWNFILE
/vis/open HepRepFile
/vis/open HepRepFile
/vis/open VRML2FILE
/vis/open VRML2FILE
The set of available drivers is listed when you first start Geant4,
The set of available drivers is listed when you first start Geant4,
but you can also get this list with the command:
but you can also get this list with the command:
help /vis/open
help /vis/open
For the OpenGL drivers, there are options with very slightly different behavior:
For the OpenGL drivers, there are options with very slightly different behavior:
OGLS: use OpenGL
OGLS: use OpenGL
’
’
s
s
“
“
Stored
Stored
”
”
mode.
mode.
OGLI: use OpenGL
OGLI: use OpenGL
’
’
s
s
“
“
Immediate
Immediate
”
”
mode.
mode.
OGL: same as OGLS unless starts using too much memory, then switches to OGLI
OGL: same as OGLS unless starts using too much memory, then switches to OGLI
Most users will not notice any difference. It has to do with whether Geant4 needs to resend
Most users will not notice any difference. It has to do with whether Geant4 needs to resend
all of the graphics information to the OpenGL driver for every new picture (Immediate
all of the graphics information to the OpenGL driver for every new picture (Immediate
mode) or can just send the new parts of the picture, getting the rest from storage already in
mode) or can just send the new parts of the picture, getting the rest from storage already in
the OpenGL driver (Stored mode).
the OpenGL driver (Stored mode).
And if you have Qt or Motif libraries installed and configured, OGL will use these.
And if you have Qt or Motif libraries installed and configured, OGL will use these.
Don
Don
’
’
t worry about this for now, but if you have problems with one mode, try the other.
t worry about this for now, but if you have problems with one mode, try the other.
11 January 2011
11Geant4 Visualization Commands J. Perl
More about Open, and about DrawVolume
More about Open, and about DrawVolume
Some drivers have additional options at open
Some drivers have additional options at open
e.g., for OpenGL, can specify size and location of window
e.g., for OpenGL, can specify size and location of window
/vis/open OGL 600x600-0+0
/vis/open OGL 600x600-0+0
You can open more than one viewer at a time:
You can open more than one viewer at a time:
/vis/open OGL
/vis/open OGL
/vis/open HepRepFile
/vis/open HepRepFile
To see what viewers you then have:
To see what viewers you then have:
/vis/viewer/list
/vis/viewer/list
To select which viewer is the current one:
To select which viewer is the current one:
/vis/viewer/select viewer-0
/vis/viewer/select viewer-0
/vis/viewer/select viewer-1
/vis/viewer/select viewer-1
All other vis commands affect only the currently selected viewer
All other vis commands affect only the currently selected viewer
To draw the entire detector geometry:
To draw the entire detector geometry:
/vis/drawVolume
/vis/drawVolume
There are many additional options to let you draw only a selected subset of the
There are many additional options to let you draw only a selected subset of the
detector geometry.
detector geometry.
See separate presentation, Geant4 Advanced Visualization
See separate presentation, Geant4 Advanced Visualization
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