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| Rev 146 | Rev 154 | ||
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| 255 | /* c2d(x,y) Angle displacement of the pixel at coordinates x,y */ |
255 | /* c2d(x,y) Angle displacement of the pixel at coordinates x,y */ |
| 256 | /* note, sign of y difference is negated, as we are dealing with top-down coordinates |
256 | /* note, sign of y difference is negated, as we are dealing with top-down coordinates |
| 257 | angle is "observed" */ |
257 | angle is "observed" */ |
| 258 | value_type ff_c2d(value_type x,value_type y){ |
258 | value_type ff_c2d(value_type x,value_type y){ |
| 259 | // Behavior of FilterFoundry <1.7: |
259 | // Behavior of FilterFoundry <1.7: |
| 260 | //return RINT(TO_FFANGLE(atan2(-y,-x))); /* FIXME: why must we negate x here? */ |
260 | //return RINT(TO_FFANGLE(atan2(-y,-x))); |
| 261 | 261 | ||
| 262 | // Behavior in FilterFoundry 1.7+: Matches FilterFactory |
262 | // Behavior in FilterFoundry 1.7+: Matches FilterFactory |
| 263 | return RINT(TO_FFANGLE(atan2(y,x))); |
263 | return RINT(TO_FFANGLE(atan2(y,x))); |
| 264 | } |
264 | } |
| 265 | 265 | ||