QT based graphics rendering system documentation + project source code and executable exe files + system instructions

Resource download address ：https://download.csdn.net/download/sheziqiong/85749907
Resource download address ：https://download.csdn.net/download/sheziqiong/85749907

1 Results display 4

2 The overall architecture 5

3 Test situation 7

3.1 Safety and reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Ease of use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.3 Maintainability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4 Algorithm is introduced 7

4.1 This part is completed in combination with my own understanding of the algorithm . . . . . . . . . . . . . . . . 7

4.2 DDA Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.2.1 A concise understanding . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.2.2 A more detailed perspective . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.3 Bresenham Algorithm 10

4.3.1 Quickly understand 10

4.3.2 From a more detailed point of view 10

4.4 Midpoint drawing algorithm 12

4.5 Cohen Sutherland Line segment clipping algorithm 15

4.5.1 The main idea 15

4.6 Liang-Barsky Clipping algorithm 16

4.6.1 Algorithmic thought : 17

4.6.2 It's worth thinking about : 17

4.6.3 More detailed 18

4.7 Rotate and zoom 19

4.8 Curve generation : Be´zier curve 19

4.9 de Casteljau Algorithm 20

4.10 B Splines 21

4.10.1 B Properties of spline basis function 24

4.10.2 B Properties of spline curve function 24

4.10.3 B Spline curve type division 24

4.11 Circle drawing : Midpoint Bresenham Circle generation algorithm 25

4.12 Circle drawing : Octant circle generation algorithm 26

4.13 Ellipse drawing : Midpoint Bresenham Ellipse generation algorithm 26

4.14 Fill element generation 28

4.14.1 Scan filled elements to generate 28

4.14.2 X- Scanline algorithm 30

4.14.3 Improved scan line polygon filling algorithm 31

4.14.4 Area fill element generation 32

4.15 Transformation part 33

4.15.1 translation 33

4.15.2 rotate 34

4.15.3 Two dimensional observation transformation 34

4.15.4 3D observation concept 35

4.15 Basic concepts of graphics 35

5 pluses 36

5.1 Line anti aliasing implementation 36

5.1.1 additional : Anti aliasing concept of line drawing elements 38

5.2 Optimize Bezier Calculation and performance test of curve generation algorithm 39

5.2.1 Mathematically optimized Bezier Curve generation algorithm 39

5.2.2 Performance testing 40

5.3 Function interpolation ( numerical analysis ) Study 40

5.3.1 Function interpolation 41

5.3.2 Three times Hermite interpolation 41

5.3.3 Cubic spline interpolation 41

5.4 Ray tracing learning 41

5.5 Sutherland-Hodgeman Polygon clipping 42

5.6 Weiler-Atherton Polygon clipping algorithm in-depth study 44

5.6.1 Algorithmic thought 44

5.6.2 Specific algorithm process 44

5.6.3 contrast : Cropped Sutherland-Hodgman Algorithm 46

6 appendix 47

6.1 11 Summary of monthly progress report 47

6.1.1 11 What did the month achieve 47

6.1.2 In terms of code 47

6.1.3 In terms of reporting 47

6.1.4 12 Monthly plan 47

6.2 10 Summary of monthly progress report 47

6.2.1 10 Implementation details of monthly progress report 48

6.2.2 10 Monthly progress display 50

6.2.3 10 Difficulties and challenges encountered in monthly progress 50

6.2.4 11 Monthly plan 50

6.3 Personal summary 51

7 reference 51

1. Results display

Graphics rendering system , It integrates the drawing of various graphics : Line (DDA and Bresenham), Circles and ellipses ( Midpoint generation ), polygon , rectangular , triangle , Five-pointed star , Bezier and B Splines , Various operations such as cropping are also provided , The color , fill , Zoom, etc , have other 3D Effect display . The whole system not only helps the developer to study graphics deeply , It also brings users a very vivid graphic display experience , It can be applied to all aspects of life .
For detailed use process and dynamic diagram display, please see System operation manual

2. The overall architecture

Project use MainWindow( Inherited from QMainWindow class ) As the main body of the control panel , Built in for use
Any number of overrides of the user canvas QGLWidget, All graphics have a management class CanvasAdmin, CanvasAdmin take
Docking the drawing and manipulation of all basic elements , For better code reuse , stay CanvasAdmin Calling primitive manipulation functions requires a base class interface , Through this base class interface, you can dynamically bind operations on various primitives .

Resource download address ：https://download.csdn.net/download/sheziqiong/85749907
Resource download address ：https://download.csdn.net/download/sheziqiong/85749907