Negative coordinates in C# Graphics?











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I am following this documentation, specifically the DrawString method. It says that
for



public void DrawString (string s, System.Drawing.Font font, System.Drawing.Brush brush, float x, float y);


x and y are the coordinates of the upper-left corner of the drawn text.



I have call this function with x=0 but there is still some space between the border and the upper left corner so I call it with x=-10 and now it is touching the border.



Does this mean that somehow we can call these with negative values?










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  • Yes, you can move the drawing into the negative. In fact you can move the whole graphics canvas there by Graphics.TranslateTransform(-x, -y);
    – TaW
    Nov 20 at 10:52

















up vote
0
down vote

favorite












I am following this documentation, specifically the DrawString method. It says that
for



public void DrawString (string s, System.Drawing.Font font, System.Drawing.Brush brush, float x, float y);


x and y are the coordinates of the upper-left corner of the drawn text.



I have call this function with x=0 but there is still some space between the border and the upper left corner so I call it with x=-10 and now it is touching the border.



Does this mean that somehow we can call these with negative values?










share|improve this question






















  • Yes, you can move the drawing into the negative. In fact you can move the whole graphics canvas there by Graphics.TranslateTransform(-x, -y);
    – TaW
    Nov 20 at 10:52















up vote
0
down vote

favorite









up vote
0
down vote

favorite











I am following this documentation, specifically the DrawString method. It says that
for



public void DrawString (string s, System.Drawing.Font font, System.Drawing.Brush brush, float x, float y);


x and y are the coordinates of the upper-left corner of the drawn text.



I have call this function with x=0 but there is still some space between the border and the upper left corner so I call it with x=-10 and now it is touching the border.



Does this mean that somehow we can call these with negative values?










share|improve this question













I am following this documentation, specifically the DrawString method. It says that
for



public void DrawString (string s, System.Drawing.Font font, System.Drawing.Brush brush, float x, float y);


x and y are the coordinates of the upper-left corner of the drawn text.



I have call this function with x=0 but there is still some space between the border and the upper left corner so I call it with x=-10 and now it is touching the border.



Does this mean that somehow we can call these with negative values?







c# graphics






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asked Nov 20 at 6:17









KansaiRobot

8541026




8541026












  • Yes, you can move the drawing into the negative. In fact you can move the whole graphics canvas there by Graphics.TranslateTransform(-x, -y);
    – TaW
    Nov 20 at 10:52




















  • Yes, you can move the drawing into the negative. In fact you can move the whole graphics canvas there by Graphics.TranslateTransform(-x, -y);
    – TaW
    Nov 20 at 10:52


















Yes, you can move the drawing into the negative. In fact you can move the whole graphics canvas there by Graphics.TranslateTransform(-x, -y);
– TaW
Nov 20 at 10:52






Yes, you can move the drawing into the negative. In fact you can move the whole graphics canvas there by Graphics.TranslateTransform(-x, -y);
– TaW
Nov 20 at 10:52














1 Answer
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enter image description here



Depending upon how the Font was developed every character has a bounding box. The Top-Left cordinates that you specify are not where the Alphabet starts but are from where the Bounding Box Top-left starts.



In this image it will be the Top-left Corner of the black rectangle. Now depending upon the Font/Typography - Either the Actual alphabet will be very closely aligned with the bounding box boundaries or may have some padding (like my poor example below has quite some space).



Thats why in your case -10 makes it look like as if Character/Alphabet starts from Exact edge. But In realtiy the Bounding Box Top-Left is at -10 (negative cordinate) which is why it looks so.






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  • A post that contains the word 'Typography' shouldn't be so short on line feeds ;-)
    – TaW
    Nov 20 at 10:54










  • :) That was a quick reply - though not enough reason for bad formatting :D
    – Prateek Shrivastava
    Nov 21 at 3:11











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1 Answer
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active

oldest

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down vote













enter image description here



Depending upon how the Font was developed every character has a bounding box. The Top-Left cordinates that you specify are not where the Alphabet starts but are from where the Bounding Box Top-left starts.



In this image it will be the Top-left Corner of the black rectangle. Now depending upon the Font/Typography - Either the Actual alphabet will be very closely aligned with the bounding box boundaries or may have some padding (like my poor example below has quite some space).



Thats why in your case -10 makes it look like as if Character/Alphabet starts from Exact edge. But In realtiy the Bounding Box Top-Left is at -10 (negative cordinate) which is why it looks so.






share|improve this answer























  • A post that contains the word 'Typography' shouldn't be so short on line feeds ;-)
    – TaW
    Nov 20 at 10:54










  • :) That was a quick reply - though not enough reason for bad formatting :D
    – Prateek Shrivastava
    Nov 21 at 3:11















up vote
1
down vote













enter image description here



Depending upon how the Font was developed every character has a bounding box. The Top-Left cordinates that you specify are not where the Alphabet starts but are from where the Bounding Box Top-left starts.



In this image it will be the Top-left Corner of the black rectangle. Now depending upon the Font/Typography - Either the Actual alphabet will be very closely aligned with the bounding box boundaries or may have some padding (like my poor example below has quite some space).



Thats why in your case -10 makes it look like as if Character/Alphabet starts from Exact edge. But In realtiy the Bounding Box Top-Left is at -10 (negative cordinate) which is why it looks so.






share|improve this answer























  • A post that contains the word 'Typography' shouldn't be so short on line feeds ;-)
    – TaW
    Nov 20 at 10:54










  • :) That was a quick reply - though not enough reason for bad formatting :D
    – Prateek Shrivastava
    Nov 21 at 3:11













up vote
1
down vote










up vote
1
down vote









enter image description here



Depending upon how the Font was developed every character has a bounding box. The Top-Left cordinates that you specify are not where the Alphabet starts but are from where the Bounding Box Top-left starts.



In this image it will be the Top-left Corner of the black rectangle. Now depending upon the Font/Typography - Either the Actual alphabet will be very closely aligned with the bounding box boundaries or may have some padding (like my poor example below has quite some space).



Thats why in your case -10 makes it look like as if Character/Alphabet starts from Exact edge. But In realtiy the Bounding Box Top-Left is at -10 (negative cordinate) which is why it looks so.






share|improve this answer














enter image description here



Depending upon how the Font was developed every character has a bounding box. The Top-Left cordinates that you specify are not where the Alphabet starts but are from where the Bounding Box Top-left starts.



In this image it will be the Top-left Corner of the black rectangle. Now depending upon the Font/Typography - Either the Actual alphabet will be very closely aligned with the bounding box boundaries or may have some padding (like my poor example below has quite some space).



Thats why in your case -10 makes it look like as if Character/Alphabet starts from Exact edge. But In realtiy the Bounding Box Top-Left is at -10 (negative cordinate) which is why it looks so.







share|improve this answer














share|improve this answer



share|improve this answer








edited Nov 21 at 3:11

























answered Nov 20 at 6:58









Prateek Shrivastava

878511




878511












  • A post that contains the word 'Typography' shouldn't be so short on line feeds ;-)
    – TaW
    Nov 20 at 10:54










  • :) That was a quick reply - though not enough reason for bad formatting :D
    – Prateek Shrivastava
    Nov 21 at 3:11


















  • A post that contains the word 'Typography' shouldn't be so short on line feeds ;-)
    – TaW
    Nov 20 at 10:54










  • :) That was a quick reply - though not enough reason for bad formatting :D
    – Prateek Shrivastava
    Nov 21 at 3:11
















A post that contains the word 'Typography' shouldn't be so short on line feeds ;-)
– TaW
Nov 20 at 10:54




A post that contains the word 'Typography' shouldn't be so short on line feeds ;-)
– TaW
Nov 20 at 10:54












:) That was a quick reply - though not enough reason for bad formatting :D
– Prateek Shrivastava
Nov 21 at 3:11




:) That was a quick reply - though not enough reason for bad formatting :D
– Prateek Shrivastava
Nov 21 at 3:11


















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