Draw lines by angle on bitmap 500x500












0















I try to make my own function for drawing lines on bitmap. All lines pass through center coordinate. I faced with several problems:




  1. Well known line equation y=tan(a)x as is doesn't work for me. Because I don't know how to match i,j coordinates in bitmap and x,y in Cartesian coordinate system.


  2. How to make start point center of bitmap and end its bound.
    Maybe someone know library for this for c# it will be worse than own implementation but still help me a lot.



scheme










share|improve this question























  • Very unclear what exactly you have problem with. Possibly stackoverflow.com/questions/11678693/… could help, but it sounds like you have problems even before drawing line...

    – Alexei Levenkov
    Nov 21 '18 at 18:45











  • Matrix.RotateAt. Or Graphics.RotateTransform. These in the System.Drawing namespace. In System.Windows.Media you have similar methods Matrix and RotateTransform. Start from these.

    – Jimi
    Nov 21 '18 at 19:05


















0















I try to make my own function for drawing lines on bitmap. All lines pass through center coordinate. I faced with several problems:




  1. Well known line equation y=tan(a)x as is doesn't work for me. Because I don't know how to match i,j coordinates in bitmap and x,y in Cartesian coordinate system.


  2. How to make start point center of bitmap and end its bound.
    Maybe someone know library for this for c# it will be worse than own implementation but still help me a lot.



scheme










share|improve this question























  • Very unclear what exactly you have problem with. Possibly stackoverflow.com/questions/11678693/… could help, but it sounds like you have problems even before drawing line...

    – Alexei Levenkov
    Nov 21 '18 at 18:45











  • Matrix.RotateAt. Or Graphics.RotateTransform. These in the System.Drawing namespace. In System.Windows.Media you have similar methods Matrix and RotateTransform. Start from these.

    – Jimi
    Nov 21 '18 at 19:05
















0












0








0








I try to make my own function for drawing lines on bitmap. All lines pass through center coordinate. I faced with several problems:




  1. Well known line equation y=tan(a)x as is doesn't work for me. Because I don't know how to match i,j coordinates in bitmap and x,y in Cartesian coordinate system.


  2. How to make start point center of bitmap and end its bound.
    Maybe someone know library for this for c# it will be worse than own implementation but still help me a lot.



scheme










share|improve this question














I try to make my own function for drawing lines on bitmap. All lines pass through center coordinate. I faced with several problems:




  1. Well known line equation y=tan(a)x as is doesn't work for me. Because I don't know how to match i,j coordinates in bitmap and x,y in Cartesian coordinate system.


  2. How to make start point center of bitmap and end its bound.
    Maybe someone know library for this for c# it will be worse than own implementation but still help me a lot.



scheme







c# drawable






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 21 '18 at 18:10









SkiFSkiF

105




105













  • Very unclear what exactly you have problem with. Possibly stackoverflow.com/questions/11678693/… could help, but it sounds like you have problems even before drawing line...

    – Alexei Levenkov
    Nov 21 '18 at 18:45











  • Matrix.RotateAt. Or Graphics.RotateTransform. These in the System.Drawing namespace. In System.Windows.Media you have similar methods Matrix and RotateTransform. Start from these.

    – Jimi
    Nov 21 '18 at 19:05





















  • Very unclear what exactly you have problem with. Possibly stackoverflow.com/questions/11678693/… could help, but it sounds like you have problems even before drawing line...

    – Alexei Levenkov
    Nov 21 '18 at 18:45











  • Matrix.RotateAt. Or Graphics.RotateTransform. These in the System.Drawing namespace. In System.Windows.Media you have similar methods Matrix and RotateTransform. Start from these.

    – Jimi
    Nov 21 '18 at 19:05



















Very unclear what exactly you have problem with. Possibly stackoverflow.com/questions/11678693/… could help, but it sounds like you have problems even before drawing line...

– Alexei Levenkov
Nov 21 '18 at 18:45





Very unclear what exactly you have problem with. Possibly stackoverflow.com/questions/11678693/… could help, but it sounds like you have problems even before drawing line...

– Alexei Levenkov
Nov 21 '18 at 18:45













Matrix.RotateAt. Or Graphics.RotateTransform. These in the System.Drawing namespace. In System.Windows.Media you have similar methods Matrix and RotateTransform. Start from these.

– Jimi
Nov 21 '18 at 19:05







Matrix.RotateAt. Or Graphics.RotateTransform. These in the System.Drawing namespace. In System.Windows.Media you have similar methods Matrix and RotateTransform. Start from these.

– Jimi
Nov 21 '18 at 19:05














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