@sumit_goel • 16 Aug, 2010
hello friends,
I have another problem that is how to rotate the line at 90 degree from the origin.
for example, i have a line x,y
__________________
x.......................... y
and now i want to rotate this line at 90 degree as shown bellow
90
|
|
|
|
|
|
|
|
X
rotation at 90 degree
Pls help me in solving this problem
I have another problem that is how to rotate the line at 90 degree from the origin.
for example, i have a line x,y
__________________
x.......................... y
and now i want to rotate this line at 90 degree as shown bellow
90
|
|
|
|
|
|
|
|
X
rotation at 90 degree
Pls help me in solving this problem
@gaurav.bhorkar • 17 Aug, 2010
Can you post the code you've tried so far?
Here's my suggestion,
Fix one end of the line and then change the coordinates of the other end appropriately.
Here's my suggestion,
Fix one end of the line and then change the coordinates of the other end appropriately.
@optimystix • 17 Aug, 2010
what is the problem ? just substitute the corresponding values for 90 degree in the rotational transformation matrix and solve it.
where are u facing the problem ? share with us so that we can help.
where are u facing the problem ? share with us so that we can help.
@Manish Goyal • 17 Aug, 2010
Try bresenham algorithm
change the coordinates of line accordingly
change the coordinates of line accordingly
@sumit_goel • 18 Aug, 2010
Hello friends
first of all i would like to thanks to all for giving response to my problem. Actually i made a table fan in c++ and i want to rotate the fan. but for this first of all i should know how to rotate the line. then i can proceed to make rotation of fan.In the above problem i simply want to ask how to rotate the line at 90 degree.I am beginner of graphics programs in c++. and also Can anyone tell me from which site i can learn simple graphics programs in c++.
first of all i would like to thanks to all for giving response to my problem. Actually i made a table fan in c++ and i want to rotate the fan. but for this first of all i should know how to rotate the line. then i can proceed to make rotation of fan.In the above problem i simply want to ask how to rotate the line at 90 degree.I am beginner of graphics programs in c++. and also Can anyone tell me from which site i can learn simple graphics programs in c++.
@Manish Goyal • 18 Aug, 2010
Try this program but i have not execute this .
It will draw a line
Now for rotating it change its co-ordinates accordingly
It will draw a line
Now for rotating it change its co-ordinates accordingly
#include <graphics.h>
#include <math.h>
#include <conio.h>
void main(void)
{
int driver = DETECT,mode;
int x=180,y=180;
initgraph(&driver,&mode,"c:\\tc\\bgi");
for(;;)
{
line(360,360,x,y);
}
getch();
closegraph();
}
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