OpenGL viewing notes - Bryn Mawr Computer Science

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Representing a Mesh v 5 v 6 e e e 3 v 9 8 8 v e 4 1 e 11 e 2 e v 10 v e 7 e 7 4 1 e v e 2 12 v 6 e 3 5 There are 8 nodes and 12 edges 5 interior polygons 6 interior (shared) edges Each vertex has a location v i = (x i y i z i )
Simple Representation Define each polygon by the geometric locations of its vertices glBegin(GL_POLYGON); glVertex3f(x1, y1, z1); glVertex3f(x2, y2, z2); glVertex3f(x7, y7, z7); glEnd(); Inefficient and unstructured Consider moving a vertex to a new location
Page 1 and 2: CS312 OpenGL Viewing Transformation
Page 3 and 4: OpenGL Buffers Color buffer Front
Page 5 and 6: Moving the Camera The First Approa
Page 7 and 8: Moving the Camera We must be caref
Page 9 and 10: gluLookAt GL uses a more direct me
Page 11 and 12: The OpenGL Camera In OpenGL, initi
Page 13 and 14: Projections in OpenGL The View Vol
Page 15 and 16: Perspectives in OpenGL OpenGL has
Page 17 and 18: Field of View gluPerspective(fovy,
Page 19 and 20: glut 3D Primitives Cube void gl
Page 21: Defining your own shapes Objects a
Page 25 and 26: Geometry vs Topology Generally it
Page 27 and 28: Vertex Lists Put the geometry in
Page 29 and 30: Edge List e1 e2 e3 e4 e5 e6 e7 e8 e
Page 31 and 32: Drawing a polygon from a list of in
Page 33 and 34: Efficiency The weakness of our app
Page 35 and 36: Initialization Using the same col
Page 37 and 38: Drawing the cube Method 1: what to
Page 39 and 40: Back Face Culling OpenGL can compu

OpenGL viewing notes - Bryn Mawr Computer Science

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