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OpenGL, OpenSceneGraph, Maya Erik Brisson ebrisson@bu.edu IS&T Scientific Visualization Tutorial - Spring 2010
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Using graphics tools OpenGL –Program from scratch –Access to all graphics card features OpenSceneGraph –Program using scene graph paradigm –Lots of utility functions Autodesk Maya –Powerful modeling and animation package –Highly interactive –Beautiful rendering IS&T Scientific Visualization Tutorial - Spring 2010
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OpenGL – primitives SCV Visualization Workshop – Fall 2008IS&T Scientific Visualization Tutorial - Spring 2010
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OpenGL – basic paradigm (cube.c) SCV Visualization Workshop – Fall 2008 for (i = 0; i < 6; i++) { glBegin(GL_QUADS); glNormal3fv(&n[i][0]); glVertex3fv(&v[faces[i][0]][0]); glVertex3fv(&v[faces[i][1]][0]); glVertex3fv(&v[faces[i][2]][0]); glVertex3fv(&v[faces[i][3]][0]); glEnd(); } IS&T Scientific Visualization Tutorial - Spring 2010
![OpenGL – basic paradigm (cube.c) SCV Visualization Workshop – Fall 2008 for (i = 0; i < 6; i++) { glBegin(GL_QUADS); glNormal3fv(&n[i][0]); glVertex3fv(&v[faces[i][0]][0]); glVertex3fv(&v[faces[i][1]][0]); glVertex3fv(&v[faces[i][2]][0]); glVertex3fv(&v[faces[i][3]][0]); glEnd(); } IS&T Scientific Visualization Tutorial - Spring 2010](http://images.slideplayer.com/17/5362395/slides/slide_4.jpg "OpenGL – basic paradigm (cube.c) SCV Visualization Workshop – Fall 2008 for (i = 0; i < 6; i++) { glBegin(GL_QUADS); glNormal3fv(&n[i][0]); glVertex3fv(&v[faces[i][0]][0]); glVertex3fv(&v[faces[i][1]][0]); glVertex3fv(&v[faces[i][2]][0]); glVertex3fv(&v[faces[i][3]][0]); glEnd(); } IS&T Scientific Visualization Tutorial - Spring 2010")
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OpenSceneGraph Open source OpenGL based Similar to SGI Performer Many utility functions –Notably, 3-D file readers IS&T Scientific Visualization Tutorial - Spring 2010
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Maya screenshot IS&T Scientific Visualization Tutorial - Spring 2010
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Maya screenshot IS&T Scientific Visualization Tutorial - Spring 2010
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Image credits OpenGL geometric data structures –The OpenGL Programming Guide (“The Red Book”) Addison-Wesley Scene Graph –www.opensg.org IS&T Scientific Visualization Tutorial - Spring 2010
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