2011-05-31 05:51:53 +00:00
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package raster
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type Fix int32
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const (
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2011-06-01 07:38:45 +00:00
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FIXED_SHIFT = 16
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2011-05-31 05:51:53 +00:00
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FIXED_FLOAT_COEF = 1 << FIXED_SHIFT
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)
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/*! Fixed point math inevitably introduces rounding error to the DDA. The error is
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* fixed every now and then by a separate fix value. The defines below set these.
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*/
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const (
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SLOPE_FIX_SHIFT = 8
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2011-06-01 07:38:45 +00:00
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SLOPE_FIX_STEP = 1 << SLOPE_FIX_SHIFT
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SLOPE_FIX_MASK = SLOPE_FIX_STEP - 1
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)
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