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#include "s/s_Math.h"
#include <cmath>
namespace sLib {
float extrapolate(float start, float end, float scale) {
float diff = end - start;
if (scale < 1.0f) {
return end;
}
return start + diff / scale;
}
float addCalc(float *value, float target, float ratio, float maxStepSize, float minStepSize) {
if (*value != target) {
float step = ratio * (target - *value);
if (step >= minStepSize || (step <= -minStepSize)) {
if (step > maxStepSize) {
step = maxStepSize;
}
if (step < -maxStepSize) {
step = -maxStepSize;
}
*value += step;
} else if (step > 0.0f) {
if (step < minStepSize) {
*value = *value + minStepSize;
if (*value > target) {
*value = target;
}
}
} else if (step > -minStepSize) {
*value += -minStepSize;
if (*value < target) {
*value = target;
}
}
}
float ret = target - *value;
if (ret > 0.0f) {
return ret;
} else {
return -ret;
}
}
void addCalcScaledDiff(float *value, float target, float ratio, float maxStepSize) {
if (*value == target) {
return;
}
float step = ratio * (target - *value);
if (step > maxStepSize) {
step = maxStepSize;
} else if (step < -maxStepSize) {
step = -maxStepSize;
}
*value += step;
}
void addCalcScaled(float *value, float stepSize, float maxStep) {
float step = *value * stepSize;
if (step > maxStep) {
step = maxStep;
} else if (step < -maxStep) {
step = -maxStep;
}
*value -= step;
}
int absDiff(short a1, short a2) {
return abs((short)(a1 - a2));
}
template <typename T>
T addCalcAngleT(T *value, T target, T ratio, T maxStepSize, T minStepSize) {
T diff = target - *value;
if (*value != target) {
T step = diff / ratio;
if (step > minStepSize || step < -minStepSize) {
if (step > maxStepSize) {
step = maxStepSize;
} else if (step < -maxStepSize) {
step = -maxStepSize;
}
*value += step;
} else {
if (0 <= diff) {
T newVal = *value + minStepSize;
*value = newVal;
if ((T)(target - *value) <= 0) {
*value = target;
}
} else {
T newVal = *value - minStepSize;
*value = newVal;
if ((T)(target - newVal) >= 0) {
*value = target;
}
}
}
}
return target - *value;
}
template <typename T>
void addCalcAngleT(T *value, T target, T ratio, T maxStepSize) {
T diff = target - *value;
T step = diff / ratio;
if (step > maxStepSize) {
*value += maxStepSize;
} else if (step < -maxStepSize) {
*value -= maxStepSize;
} else {
*value += step;
}
}
short addCalcAngle(short *value, short target, short ratio, short maxStepSize, short minStepSize) {
return addCalcAngleT(value, target, ratio, maxStepSize, minStepSize);
}
void addCalcAngle(short *value, short target, short ratio, short maxStepSize) {
return addCalcAngleT(value, target, ratio, maxStepSize);
}
short addCalcAngle2(short *value, short target, short ratio, short maxStepSize, short minStepSize) {
s16 oldValue = *value;
if (oldValue != target) {
s32 unclampedStep;
if (ratio > 0) {
if (target < oldValue) {
unclampedStep = 0x10000 - (oldValue - target);
} else {
unclampedStep = target - oldValue;
}
} else if (ratio < 0) {
if (target < oldValue) {
unclampedStep = oldValue - target;
} else {
unclampedStep = 0xFFFF - (target - oldValue);
}
} else {
return (s16)(target - oldValue);
}
s32 scaledStep = labs(unclampedStep / ratio);
s16 clampedStep = 0x7FFF;
if (scaledStep <= 0x7FFF) {
clampedStep = scaledStep;
}
if (clampedStep > minStepSize) {
if (clampedStep > maxStepSize) {
clampedStep = maxStepSize;
}
if (ratio < 0) {
clampedStep = -clampedStep;
}
*value += clampedStep;
} else if (ratio >= 0) {
*value += minStepSize;
if (((s16)(target - oldValue) > 0) && ((s16)(target - *value) <= 0)) {
*value = target;
}
} else {
*value -= minStepSize;
if (((s16)(target - oldValue) < 0) && ((s16)(target - *value) >= 0)) {
*value = target;
}
}
}
return (s16)(target - *value);
}
// Is the same as cLib_chaseUC
BOOL chaseUC(u8 *value, u8 target, u8 stepSize) {
if (stepSize) {
s16 val = *value;
s16 tgt = target;
s16 szs;
if (val > tgt) {
szs = -stepSize;
} else {
szs = stepSize;
}
val += szs;
if (szs * (val - tgt) >= 0) {
*value = target;
return TRUE;
} else {
*value = val;
}
}
else if (*value == target) {
return TRUE;
}
return FALSE;
}
template <typename T>
BOOL chaseT(T *value, T target, T stepSize) {
if (*value == target) {
return 1;
}
if (stepSize) {
if (*value > target) {
stepSize = -stepSize;
}
*value += stepSize;
if (stepSize * (*value - target) >= 0) {
*value = target;
return 1;
}
}
return 0;
}
BOOL chase(short *value, short target, short stepSize) {
return chaseT(value, target, stepSize);
}
BOOL chase(int *value, int target, int stepSize) {
return chaseT(value, target, stepSize);
}
BOOL chase(float *value, float target, float stepSize) {
return chaseT(value, target, stepSize);
}
template <typename T>
BOOL isInRangeT(T val, T min, T max) {
BOOL ret;
if (min < max) {
return val >= min && val <= max;
} else {
return val >= max && val <= min;
}
return ret;
}
BOOL isInRange(float val, float min, float max) {
return isInRangeT(val, min, max);
}
BOOL chaseAngle(short *value, short target, short stepSize) {
if (*value == target) {
return 1;
}
if (stepSize != 0) {
if ((short)(*value - target) > 0) {
stepSize = -stepSize;
}
*value += stepSize;
if (stepSize * (short)(*value - target) >= 0) {
*value = target;
return 1;
}
}
return 0;
}
BOOL chaseAngle2(short *value, short target, short stepSize) {
if (*value == target) {
return TRUE;
}
if (stepSize) {
short step = stepSize;
if (stepSize < 0) {
if (stepSize != 0x8000) {
stepSize = -stepSize;
} else {
stepSize = 0x7FFF;
}
}
if ((short)(*value - target) > 0) {
stepSize = -stepSize;
}
*value += step;
if (step * stepSize > 0) {
if (step * (short)(*value - target) >= 0) {
*value = target;
return TRUE;
}
}
}
return FALSE;
}
} // namespace sLib
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