Introduction to OpenGL Prof. Dr.-Ing. Lars Linsen - Faculty.jacobs ...

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Jacobs University Matrix stacks • The matrices manipulated by all operations discussed so far are the ones that sit on the top of the matrix stack. • When a matrix is pushed onto the stack, the current topmost matrix is duplicated, so that first and second matrices contain the same entries. • When popping a matrix, the topmost matrix is deleted and the second one becomes the topmost one. Visualization and Computer Graphics Lab 320621: Advanced Visualization Lab 50
Matrix stacks - some applications • Modelview matrices – E.g.: Save the current position, go somewhere else, draw something, return to the previous position, go elsewhere, draw the same thing scaled by a factor of 2, return to the initial position, … – The stack may contain at least 32 matrices (depends on the OpenGL implementation) • Projection matrices – E.g. useful when a text box needs to be displayed (since text is best viewed in orthogonal projection and realistic applications are using perspective projections). – At least 2 matrices (again depends on implementation) Jacobs University Visualization and Computer Graphics Lab 320621: Advanced Visualization Lab 51
Page 1 and 2: Jacobs University Introduction to O
Page 3 and 4: Jacobs University Graphics Programm
Page 5 and 6: CPU Jacobs University OpenGL Archit
Page 7 and 8: Setting State Controlling current s
Page 9 and 10: • AGL, GLX, WGL Jacobs University
Page 11 and 12: • Headers Files • #include •
Page 13 and 14: Getting started with OpenGL Install
Page 15 and 16: Jacobs University Setting up GLUT
Page 17 and 18: Jacobs University Initializing GLUT
Page 19 and 20: Handling events with GLUT • Callb
Page 21 and 22: Handling Events with GLUT • Redis
Page 23 and 24: First example: Main function (1) Ja
Page 25 and 26: Jacobs University Reshape function
Page 27 and 28: Jacobs University Display function
Page 29 and 30: Jacobs University Display function
Page 31 and 32: Jacobs University Camera analogy
Page 33 and 34: Programming transformations • Pri
Page 35 and 36: Coordinate systems and transformati
Page 37 and 38: M = Jacobs University 3D transforma
Page 39 and 40: Projection Transformation •Shape
Page 41 and 42: Applying projection transformations
Page 43 and 44: Jacobs University Perspective proje
Page 45 and 46: Jacobs University Viewing transform
Page 47 and 48: Jacobs University Viewing and model
Page 49: Jacobs University Matrix Operations
Page 53 and 54: Points: Jacobs University OPenGL pr
Page 55 and 56: Jacobs University OpenGL primitive
Page 57 and 58: Using OpenGL Primitives Jacobs Univ
Page 59 and 60: Jacobs University GLUT objects •
Page 61 and 62: Jacobs University GLUT objects Visu
Page 63 and 64: Jacobs University GLUT objects •
Page 65 and 66: Jacobs University 5. Displaying Vis
Page 67 and 68: Front Buffer 1 2 4 8 16 Jacobs Univ
Page 69 and 70: An Updated Program Template (cont.)
Page 71 and 72: Full Scene Antialiasing : Jittering
Page 73 and 74: - operations Jacobs University Accu
Page 75 and 76: Jacobs University Multi-pass Render
Page 77 and 78: Depth Buffering Using OpenGL Reque
Page 79 and 80: Specifying Geometric Primitives Jac
Page 81 and 82: Jacobs University Surface Normals
Page 83 and 84: Jacobs University Light Properties
Page 85 and 86: Jacobs University Types of Lights
Page 87 and 88: • Flip each light’s switch Jaco
Page 89 and 90: • Spotlights Advanced Lighting Fe
Page 91 and 92: Jacobs University 8. Textures Visua
Page 93 and 94: Texture Mapping and the OpenGL Pipe
Page 95 and 96: Jacobs University Texture Objects
Page 97 and 98: Jacobs University Specify Texture I
Page 99 and 100: Jacobs University Example // Loadin
Page 101 and 102:
Jacobs University Applying Textures
Page 103 and 104:
Jacobs University Filter Modes Exam
Page 105 and 106:
Jacobs University Wrapping Mode •
Page 107 and 108:
Perspective Correction Hint • Tex
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