OsSlerp
From OpenSimulator
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|delay=0 | |delay=0 | ||
|function_syntax=rotation osSlerp(rotation a, rotation b, float ratio); | |function_syntax=rotation osSlerp(rotation a, rotation b, float ratio); | ||
− | |||
|description=Returns a rotation that is the spherical interpolation of a and b, according to ratio that can be from 0 (result is a) to 1 (result is b) | |description=Returns a rotation that is the spherical interpolation of a and b, according to ratio that can be from 0 (result is a) to 1 (result is b) | ||
|ossl_example=<source lang="lsl"> | |ossl_example=<source lang="lsl"> | ||
− | + | // | |
− | + | // osSlerp Script Exemple | |
− | + | // Author: Kayaker Mangic Sept 2019 | |
− | + | // | |
− | + | ||
+ | // This isn't the right way to wiggle a stick (llSetKeyframedMotion is better) but it does demostrate osSlerp working! | ||
+ | // Put this script in a prim that is long in the X direction, it will wave it's tip around in a figure 8 (infinity) pattern. | ||
+ | |||
+ | rotation lastrot; // slerp between these two rotations | ||
+ | rotation nextrot; // slerp between these two rotations | ||
+ | float t = 0.0; // parameter for calculating angles to slerp between | ||
+ | float ratio = 1.0; // does 10 slerp steps of 0.1 between last and next | ||
+ | integer switch; | ||
− | |||
− | |||
− | |||
− | |||
default | default | ||
{ | { | ||
state_entry() | state_entry() | ||
{ | { | ||
− | + | llSay(PUBLIC_CHANNEL, "Touch to see osSlerp usage."); | |
} | } | ||
− | + | ||
− | + | touch_start(integer number) | |
{ | { | ||
− | + | if (switch = !switch) | |
− | if ( | + | |
{ | { | ||
− | + | llSetTimerEvent(1.0); | |
− | + | } | |
− | + | ||
− | + | else | |
− | + | { | |
− | + | llSetTimerEvent(0.0); | |
− | + | ||
− | + | ||
} | } | ||
− | |||
− | |||
} | } | ||
− | + | ||
− | </ | + | timer() |
+ | { | ||
+ | integer counter = 10; | ||
+ | |||
+ | while(--counter) | ||
+ | { | ||
+ | ratio += 0.1; | ||
+ | |||
+ | if (ratio > 1.0) | ||
+ | { | ||
+ | ratio = 0.1; // start over | ||
+ | lastrot = nextrot; // save the last rotation | ||
+ | t += PI / 10.0; // bump t to generate points on a Lissajous curve | ||
+ | float y = llSin(t); // this will generate points around an | ||
+ | float z = llSin(2.0 * t); // infinity sympol | ||
+ | vector fwd = llVecNorm(<2.0, y, z>); // tip of this vector carves out the shape | ||
+ | vector lft = llVecNorm(<0.0, 0.0, 1.0> % fwd); // convert that into a rotation | ||
+ | nextrot = llAxes2Rot(fwd, lft, fwd % lft); // this will be the next rotation to slerp to | ||
+ | } | ||
− | |additional_info=Implemented | + | rotation rot = osSlerp(lastrot, nextrot, ratio); // slerp generates rotations between these |
+ | llSetLinkPrimitiveParamsFast(LINK_THIS, [PRIM_ROTATION, rot]); | ||
+ | llSleep(0.09); | ||
+ | } | ||
+ | } | ||
+ | }</source> | ||
+ | |additional_info=Implemented Sept, 2019 by Ubit Umarov | ||
}} | }} |
Revision as of 14:31, 29 December 2020
rotation osSlerp(rotation a, rotation b, float ratio);
| |
Returns a rotation that is the spherical interpolation of a and b, according to ratio that can be from 0 (result is a) to 1 (result is b) | |
Threat Level | None |
Permissions | Use of this function is always allowed by default |
Extra Delay | 0 seconds |
Example(s) | |
// // osSlerp Script Exemple // Author: Kayaker Mangic Sept 2019 // // This isn't the right way to wiggle a stick (llSetKeyframedMotion is better) but it does demostrate osSlerp working! // Put this script in a prim that is long in the X direction, it will wave it's tip around in a figure 8 (infinity) pattern. rotation lastrot; // slerp between these two rotations rotation nextrot; // slerp between these two rotations float t = 0.0; // parameter for calculating angles to slerp between float ratio = 1.0; // does 10 slerp steps of 0.1 between last and next integer switch; default { state_entry() { llSay(PUBLIC_CHANNEL, "Touch to see osSlerp usage."); } touch_start(integer number) { if (switch = !switch) { llSetTimerEvent(1.0); } else { llSetTimerEvent(0.0); } } timer() { integer counter = 10; while(--counter) { ratio += 0.1; if (ratio > 1.0) { ratio = 0.1; // start over lastrot = nextrot; // save the last rotation t += PI / 10.0; // bump t to generate points on a Lissajous curve float y = llSin(t); // this will generate points around an float z = llSin(2.0 * t); // infinity sympol vector fwd = llVecNorm(<2.0, y, z>); // tip of this vector carves out the shape vector lft = llVecNorm(<0.0, 0.0, 1.0> % fwd); // convert that into a rotation nextrot = llAxes2Rot(fwd, lft, fwd % lft); // this will be the next rotation to slerp to } rotation rot = osSlerp(lastrot, nextrot, ratio); // slerp generates rotations between these llSetLinkPrimitiveParamsFast(LINK_THIS, [PRIM_ROTATION, rot]); llSleep(0.09); } } } | |
Notes | |
Implemented Sept, 2019 by Ubit Umarov |