Rotate a cylinder to allign axis

johnfriend

Hi i have cylinder geometry . bottom (cross section)circle centre point is x1, y1, z1 and top is x2, yz, z2. cylinder centre axis is not allign with any (Global x,y,z) axis. if i want to align a cylinder with Global axis(x,y,z), what is angle need to rotated with respect to x ,y ,z (Global )axis.

Philosophaie

Declination angle is what you are looking for. The difference between the center will give the spatial coordinates. The (x,y,z), (x1,y1,z1) and (x2,y2,z2) must all be of the same coordinate system or conversion is necessary. Here is the equation for Declination:

DECangle=atan((z2-z1) / sqrt((x2-x1)^2 + (y2-y1)^2))

johnfriend

cylinder model declinde with all three (cartesian)axis. it's declined with theta1 axis with respect to X, theta2 axis with respect to Y and theta3 axis with respect to Z.how to calculate that?

johnfriend

cylinder model Inclined with all three (x,y,z-cartesian)axis. it's Inclined with theta1 axis with respect to X, theta2 axis with respect to Y and theta3 axis with respect to Z.how to calculate theta1,theta2,theta3?

Philosophaie

Which axis is the cylinder pointing?

LCKurtz

If you have a vector in the direction of the cylinder axis, a unit vector in that direction has the direction cosines for its components. They are the cosines of your angles.

Similar Threads for: Rotate a cylinder to allign axis
Thread	Forum	Replies
MATLAB Rotate Around X-Axis	Math & Science Software	2
Does the ball rotate about its axis?!?!?!	Classical Physics	14
Rotate about an axis	Introductory Physics Homework	2
Can a wave rotate about its axis??	Classical Physics	5
How Do I rotate f(x) around the x-axis in MATlab or Mathematica?	Math & Science Software	4

johnfriend	Rotate a cylinder to allign axis Tweet Hi i have cylinder geometry . bottom (cross section)circle centre point is x1, y1, z1 and top is x2, yz, z2. cylinder centre axis is not allign with any (Global x,y,z) axis. if i want to align a cylinder with Global axis(x,y,z), what is angle need to rotated with respect to x ,y ,z (Global )axis.

Philosophaie	Declination angle is what you are looking for. The difference between the center will give the spatial coordinates. The (x,y,z), (x1,y1,z1) and (x2,y2,z2) must all be of the same coordinate system or conversion is necessary. Here is the equation for Declination: DECangle=atan((z2-z1) / sqrt((x2-x1)^2 + (y2-y1)^2))

johnfriend	Rotate a cylinder to allign axis cylinder model Inclined with all three (x,y,z-cartesian)axis. it's Inclined with theta1 axis with respect to X, theta2 axis with respect to Y and theta3 axis with respect to Z.how to calculate theta1,theta2,theta3?

LCKurtz Recognitions: Gold Member Homework Help	If you have a vector in the direction of the cylinder axis, a unit vector in that direction has the direction cosines for its components. They are the cosines of your angles.