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GDScript: Clarified/fixed inaccuracies in the built-in function docs.

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The input to smoothstep is not actually a weight, and the decscription
of smoothstep was pretty hard to understand and easy to misinterpret.

Clarified what it means to be approximately equal.

nearest_po2 does not do what the descriptions says it does. For one,
it returns the same power if the input is a power of 2. Second, it
returns 0 if the input is negative or 0, while the smallest possible
integral power of 2 actually is 1 (2^0 = 1). Due to the implementation
and how it is used in a lot of places, it does not seem wise to change
such a core function however, and I decided it is better to alter the
description of the built-in.

Added a few examples/clarifications/edge-cases.

(cherry picked from commit 7f9bfee0ac)
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Meriipu 2020-07-25 16:11:23 +02:00 • committed by Rémi Verschelde
parent 5e978d1df5
commit 347a9df0a1
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3 changed files with 33 additions and 17 deletions
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modules/gdscript/gdscript_functions.cpp
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@ -1715,7 +1715,7 @@ MethodInfo GDScriptFunctions::get_info(Function p_func) {
return mi;
} break;
case MATH_SMOOTHSTEP: {
MethodInfo mi("smoothstep", PropertyInfo(Variant::REAL, "from"), PropertyInfo(Variant::REAL, "to"), PropertyInfo(Variant::REAL, "weight"));
MethodInfo mi("smoothstep", PropertyInfo(Variant::REAL, "from"), PropertyInfo(Variant::REAL, "to"), PropertyInfo(Variant::REAL, "s"));
mi.return_val.type = Variant::REAL;
return mi;
} break;