Difference between revisions of "Interpolation/Target/Float"
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(Created page with "{{LSL_Function |mode=user |func=fTarget |p1_type=float|p1_name=Now|p1_desc=Current Value |p2_type=float|p2_name=Target|p2_desc=Desired Goal |p3_type=float|p3_name=Min|p3_desc=Cla…") |
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Steps float 'Now' closer using increment float 'Vel' towards 'Target' while clamping between 'Min' and 'Max'. Useful for games, simulations and vehicles. For example keeping realtime track of linear and angular acceleration and velocity of a vehicle. | Steps float 'Now' closer using increment float 'Vel' towards 'Target' while clamping between 'Min' and 'Max'. Useful for games, simulations and vehicles. For example keeping realtime track of linear and angular acceleration and velocity of a vehicle. | ||
|spec=< | |spec=<source lang="lsl2">float fTarget(float Now, float Target, float Min, float Max, float Vel) { | ||
if(llFabs(Target-Now) < Vel) { | if(llFabs(Target-Now) < Vel) { | ||
if(Target < Min) return Min; | if(Target < Min) return Min; | ||
| Line 21: | Line 21: | ||
return Now; | return Now; | ||
} | } | ||
// Released into public domain. By Nexii Malthus.</ | // Released into public domain. By Nexii Malthus.</source> | ||
|examples=< | |examples=<source lang="lsl2"> | ||
float Speed = 15.0; | float Speed = 15.0; | ||
float Desired = 45.0; | float Desired = 45.0; | ||
| Line 33: | Line 33: | ||
Speed = fTarget(Speed, Desired, Min, Max, Acceleration); // Speed == 25.0 (Step closer to Desired) | Speed = fTarget(Speed, Desired, Min, Max, Acceleration); // Speed == 25.0 (Step closer to Desired) | ||
Speed = fTarget(Speed, Desired, Min, Max, Acceleration); // Speed == 35.0 (Step closer to Desired) | Speed = fTarget(Speed, Desired, Min, Max, Acceleration); // Speed == 35.0 (Step closer to Desired) | ||
Speed = fTarget(Speed, Desired, Min, Max, Acceleration); // Speed == 40.0 (Hit Max clamp)</ | Speed = fTarget(Speed, Desired, Min, Max, Acceleration); // Speed == 40.0 (Hit Max clamp)</source> | ||
|cat1=Examples | |cat1=Examples | ||
}} | }} | ||
Latest revision as of 16:08, 24 January 2015
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Summary
Function: float fTarget( float Now, float Target, float Min, float Max, float Vel );
Steps float 'Now' closer using increment float 'Vel' towards 'Target' while clamping between 'Min' and 'Max'. Useful for games, simulations and vehicles. For example keeping realtime track of linear and angular acceleration and velocity of a vehicle.
Returns a float
| • float | Now | – | Current Value | |
| • float | Target | – | Desired Goal | |
| • float | Min | – | Clamp Minimum | |
| • float | Max | – | Clamp Maximum | |
| • float | Vel | – | Increment |
Specification
float fTarget(float Now, float Target, float Min, float Max, float Vel) {
if(llFabs(Target-Now) < Vel) {
if(Target < Min) return Min;
if(Target > Max) return Max;
return Target;
}
if(Now < Target) Now += Vel; else Now -= Vel;
if(Now < Min) Now = Min; else if(Now > Max) Now = Max;
return Now;
}
// Released into public domain. By Nexii Malthus.
Examples
float Speed = 15.0;
float Desired = 45.0;
float Min = 0.0;
float Max = 40.0;
float Acceleration = 10.0;
Speed = fTarget(Speed, Desired, Min, Max, Acceleration); // Speed == 25.0 (Step closer to Desired)
Speed = fTarget(Speed, Desired, Min, Max, Acceleration); // Speed == 35.0 (Step closer to Desired)
Speed = fTarget(Speed, Desired, Min, Max, Acceleration); // Speed == 40.0 (Hit Max clamp)