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Changed the way the step decimals are computed to a safer way, fixes many issues.

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This commit is contained in:
Juan Linietsky
2016-07-26 17:24:34 -03:00
parent 8d4d167234
commit 9151eb591d
6 changed files with 27 additions and 22 deletions
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34
core/math/math_funcs.cpp
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@@ -206,25 +206,29 @@ double Math::ceil(double p_x) {
return ::ceil(p_x);
}
int Math::decimals(double p_step) {
int Math::step_decimals(double p_step) {
int max=4;
double llimit = Math::pow(0.1,max);
double ulimit = 1.0-llimit;
int i=0;
while( max) {
static const int maxn=9;
static const double sd[maxn]={
0.9999, // somehow compensate for floating point error
0.09999,
0.009999,
0.0009999,
0.00009999,
0.000009999,
0.0000009999,
0.00000009999,
0.000000009999
};
float d = absf(p_step) - Math::floor(absf(p_step));
if (d<llimit || d>ulimit)
break;
p_step*=10.0;
max--;
i++;
double as=absf(p_step);
for(int i=0;i<maxn;i++) {
if (as>=sd[i]) {
return i;
}
}
return i;
return maxn;
}
double Math::ease(double p_x, double p_c) {