Drawing and Rasterization

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Triangle <strong>Rasterization</strong> n For a scan line: find Left extreme n Remember from previous line: n StartX = StartX previous + 1/m n Similarly find Right extreme n Extrema are on two edges n (sometimes at vertices) n Which two? n Start with two at the lowest vertex
Triangle <strong>Rasterization</strong> n For a scan line: find Left extreme n Remember from previous line: n StartX = StartX previous + 1/m n Similarly find Right extreme n Extrema are on two edges n (sometimes at vertices) n Which two? n Start with two at the lowest vertex n What if there are two lowest vertices?
Page 1 and 2: Computer Graphics Subodh Kumar Dept
Page 3 and 4: Pixel/Screen Coordinates
Page 5 and 6: Pixel/Screen Coordinates X screen =
Page 7 and 8: Polygon Rasterization n Draw pixels
Page 9 and 10: Triangle Rasterization Issues n Ani
Page 11 and 12: Polygon Rasterization Rules n Draw
Page 13 and 14: Triangle Rasterization n For a scan
Page 19: Triangle Rasterization n For a scan
Page 25 and 26: General Polygon Rasterization n Mul
Page 33 and 34: Triangle Rasterization n Setup: n F
Page 35 and 36: Triangle Rasterization n Setup: n F
Page 37 and 38: Triangle Rasterization, Really n Mu
Page 39 and 40: Triangle Rasterization, Really n Mu
Page 41 and 42: Multi-sampling n An attempt to incr
Page 43 and 44: Multi-sampling n An attempt to incr
Page 45 and 46: n Draw [X 0 , Y 0 ] Point Drawing
Page 47 and 48: Point Drawing n Draw [X 0 , Y 0 ] o
Page 53 and 54: Line Drawing n Draw a line n Start
Page 55 and 56: Drawing n Draw a line n Start at [X
Page 57 and 58: Drawing n Draw line: [X 0 , Y 0 ] T
Page 59 and 60: Line Drawing n Which pixels to draw
Page 61 and 62: Line Drawing Simplified
Page 63 and 64: Line Drawing Simplified
Page 65 and 66: Line Drawing Simplified n Draw pixe
Page 67 and 68: Bresenham’s Algorithm n If slope
Page 69 and 70: Bresenham’s Algorithm n If slope
Page 71 and 72:
Bresenham’s Algorithm n If slope
Page 73 and 74:
Locate Mid-point n Y = mX + i n Y +
Page 75 and 76:
Locate Mid-point n d = a(x+1) + b(y
Page 77 and 78:
Locate Mid-point n d = a(x+1) + b(y
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Drawing and Rasterization

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