| 262,12 → 262,18 |
|---|
| return (value_type)RINT(m*costab[abs(d-256) % COSTABSIZE]); |
| } |
| |
| /* Attention! This is NOT a function. It is internally used to calculate the variable "d". */ |
| value_type ff_c2d_negated(value_type x, value_type y) { |
| // NOTE: FilterFactory uses c2d(x,y):=atan2(y,x), but d:=atan2(-y,-x) |
| // Due to compatibility reasons, we implement it the same way! |
| // Sign of y difference is negated, as we are dealing with top-down coordinates angle is "observed" |
| return (value_type)RINT(TO_FFANGLE(atan2(-y,-x))); |
| } |
| |
| /* c2d(x,y) Angle displacement of the pixel at coordinates x,y */ |
| /* note, sign of y difference is negated, as we are dealing with top-down coordinates |
| angle is "observed" */ |
| value_type ff_c2d(value_type x,value_type y){ |
| // Behavior of FilterFoundry <1.7: |
| //return RINT(TO_FFANGLE(atan2(-y,-x))); |
| //return ff_c2d_negated(x,y); |
| |
| // Behavior in FilterFoundry 1.7+: Matches FilterFactory |
| return (value_type)RINT(TO_FFANGLE(atan2(y,x))); |