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David Rose 2000-10-11 23:55:23 +00:00
parent bcd675aa89
commit c7952d866c
2 changed files with 33 additions and 33 deletions
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2
panda/src/particlesystem/baseParticle.I
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@ -12,7 +12,7 @@ INLINE void BaseParticle::set_lifespan(float lifespan) {
}
INLINE void BaseParticle::set_alive(bool alive) {
_alive = alive;
_alive = alive;
}
INLINE float BaseParticle::get_age(void) const {

64
panda/src/particlesystem/particleCommonFuncs.h
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@ -1,32 +1,32 @@
// Filename: particleCommonFuncs.h
// Created by: darren (02Oct00)
//
////////////////////////////////////////////////////////////////////
#ifndef PARTICLECOMMONFUNCS_H
#define PARTICLECOMMONFUNCS_H
// evaluates to a float in the range [0,1]
#define NORMALIZED_RAND() ((float)rand() / (float)RAND_MAX)
// linear interpolation
// t is in [0,1]
// result is in [X0,X1]
#define LERP(t,X0,X1) ((X0) + ((t) * ((X1) - (X0))))
// linear t -> cubic t
// t is in [0,1]
// result is in [0,1]
#define CUBIC_T(t) ((t)*(t)*(3-(2*(t))))
// cubic interpolation
// t is in [0,1]
// result is in [X0,X1]
#define CLERP(t,X0,X1) LERP(CUBIC_T(t), (X0), (X1))
// spread calculator
// spread is non-negative spread magnitude
// result is in [-spread,spread]
#define SPREAD(magnitude) ((magnitude) - (NORMALIZED_RAND() * 2.0f * (magnitude)))
#endif // PARTICLECOMMONFUNCS_H
// Filename: particleCommonFuncs.h
// Created by: darren (02Oct00)
//
////////////////////////////////////////////////////////////////////
#ifndef PARTICLECOMMONFUNCS_H
#define PARTICLECOMMONFUNCS_H
// evaluates to a float in the range [0,1]
#define NORMALIZED_RAND() ((float)rand() / (float)RAND_MAX)
// linear interpolation
// t is in [0,1]
// result is in [X0,X1]
#define LERP(t,X0,X1) ((X0) + ((t) * ((X1) - (X0))))
// linear t -> cubic t
// t is in [0,1]
// result is in [0,1]
#define CUBIC_T(t) ((t)*(t)*(3-(2*(t))))
// cubic interpolation
// t is in [0,1]
// result is in [X0,X1]
#define CLERP(t,X0,X1) LERP(CUBIC_T(t), (X0), (X1))
// spread calculator
// spread is non-negative spread magnitude
// result is in [-spread,spread]
#define SPREAD(magnitude) ((magnitude) - (NORMALIZED_RAND() * 2.0f * (magnitude)))
#endif // PARTICLECOMMONFUNCS_H