Modeling (01) RNDr. Martin Madaras, PhD. martin.madaras@stuba.sk - - PowerPoint PPT Presentation
Principles of Computer Graphics and Image Processing Modeling (01) RNDr. Martin Madaras, PhD. martin.madaras@stuba.sk Computer Graphics Image processing Representing and manipulation of 2D images Modeling Representing and
martin.madaras@stuba.sk
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Representing and manipulation of 2D images
Representing and manipulation of 2D and 3D objects
Constructing images from virtual models
Simulating changes over time
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void drawLine(int x1, int x2, int y1, int y2) { float m = (y2-y1)/(x2-x1); int x = x1; float y = y1; while(x<=x2) { setPixel(x, round(y), PIXEL_ON); x += 1; y += m; } }
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void drawLine(int x1, int x2, int y1, int y2) { float m = (y2-y1)/(x2-x1); not exact! int x = x1; float y = y1; while(x<=x2) { setPixel(x, round(y), PIXEL_ON); x += 1; y += m; accumulates error! } }
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void drawLine(int x1, int x2, int y1, int y2) { float m = (y2-y1)/(x2-x1); int x = x1; int y = y1; float e = 0.0f; while(x<=x2) { setPixel(x, round(y), PIXEL_ON); x += 1; e += m; if(e>0.5f) { y += 1; e -= 1.0f; } } }
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void drawLine(int x1, int x2, int y1, int y2) { int x = x1; int y = y1; float e = -0.5f; while(x<=x2) { setPixel(x, round(y), PIXEL_ON); x += 1; e += (y2-y1)/(x2-x1); if(e>0.0f) { y += 1; e -= 1.0f; } } }
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void drawLine(int x1, int x2, int y1, int y2) { int x = x1; int y = y1; float e = -0.5f*(x2-x1); while(x<=x2) { setPixel(x, y, PIXEL_ON); x += 1; e += y2-y1; if(e>0.0f) { y += 1; e -= x2-x1; } } }
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void drawLine(int x1, int x2, int y1, int y2) { int x = x1; int y = y1; int e = -(x2-x1); while(x<=x2) { setPixel(x, y, PIXEL_ON); x += 1; e += 2*(y2-y1); if(e>0) { y += 1; e -= 2*(x2-x1); } } }
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void drawLine(int x1, int x2, int y1, int y2) { int x = x1; int y = y1; int e = -(x2-x1); while(x<=x2) { setPixel(x, y, PIXEL_ON); x += 1; e += 2*(y2-y1); if(e>0) { y += 1; e -= 2*(x2-x1); } } }
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Specification [6p]
Data structures (1p) Class diagrams (1p) Pseudocodes (1p) User interaction diagrams (1p) Structure rendering algorithms (1p) Modul connection diagrams (1p)
Use of texture mapping on 3D geometry [4p]
Unique 3D meshes (2p) Unique texturing using uv coordinates (2p)
Camera transformations [6p]
Camera with perspective projection (1p) Animated camera (2p) Interactive camera (2p) Use of multiple camera view positions (1p)
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Implementation of a scene with logically relative objects (1p) Changing scenes and multiple areas/scenes (2p)
At least 2 different scenes
Scene has a logical ground and background (sky, ceiling, walls…) (1p) Presented demo must have a beginning and a logical ending (1p)
Dynamic scene with objects being created and destroyed during demo
At least 2 different types of objects
Procedurally generated scene (2b)
Effective object to object collisions and interactions (3p)
Dynamic response to collisions
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Procedurally driven animation (2p)
Encapsulated method with parameters Logical branching
Basic simulated animation with at least 2 forces using matrix algebra (2p)
Hierarchical object transformation (2p)
At least 2 levels with 3 objects Using the aggregation and transformation matrices
Data driven animations, recommended using key-frames (3p)
Key-frame sequence represented by code structure of transformation matrix
Interpolation using curves or quaternions and spherical linear interpolation
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Diffuse scene lighting with materials (2p) Changeable color of light (1b) Correct Phong lighting with multiple light sources (2p)
Correct depth-based attenuation At least 3 material and light components Correctly combine material and light components
Correct shadows or reflections using any approach you can think of (2p)
1xA4 description of the project manual + runnable package (1b) 2xA4 screens from the projects + game video (2b) Critical evaluation and update of the specification (4b)
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https://tinyurl.com/y3jdfms4
https://tinyurl.com/y6244wyn
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