llRot2Euler
Revision as of 11:06, 1 February 2013 by Omei Qunhua (talk | contribs) (Add comment on radians. Avoid unwise hard-coded rotation. Add a 2nd example.)
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Summary
Function: vector llRot2Euler( rotation quat );15 | Function ID |
0.0 | Forced Delay |
10.0 | Energy |
Returns a vector that is the Euler representation (roll, pitch, yaw) of quat, with each component expressed in radians.
• rotation | quat | – | Any valid rotation |
Caveats
- Angles greater than PI radians (180 degrees) are returned as negative angles.
Examples
<lsl> default {
state_entry() { rotation input = llGetRot(); llSay(0, "The Rot2Euler of " + (string)input + " is: " + (string) llRot2Euler(input) ); }
} </lsl>
<lsl> // This script rotates a prim by 15 degrees each time the prim is touched
// While not the best way of achieving the result, // this script demonstrates the use of llRot2Euler and llEuler2Rot // and the use of more human-friendly degrees rather than radians
default {
touch_start(integer total_number) { // Get the object's current rotation as a quarternion rotation rot = llGetRot(); // Convert the rotation to a euler with roll, pitch, and yaw in radians vector euler = llRot2Euler(rot); // convert the angles from radians to degrees euler *= RAD_TO_DEG; // Add 15 degrees on the Z axis euler += <0, 0, 15>; // Say the current euler values in degrees llSay(0, (string) euler); // convert degrees back to radians euler *= DEG_TO_RAD; // Convert the euler back to a rotation quarternion rot = llEuler2Rot (euler); // Apply the updated rotation to the prim llSetRot( rot ); }
}
</lsl>