the ue4 blue print maprangeclamp is how towork

Development Programming & Scripting Blueprint
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1

ok,i am new to study ubreal .today i see a blue print ,maprangeclamp.it have five input.
i know the value is the playerinput to make this function to deal . In range A and in range b is the function to be available scale.out rang a and b is the number that the controlled actor
can be effect.also the formula is ob+(ob-oa)*(v-ib)/(ib-ia).but the important is whats the reason that the formula as this .I want a people to tell the formula"s underlying principle.

2

When you mouse over the nodes, they give an explanation

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image1192×539 47.4 KB

The only difference, is the ‘clamped’ node will make sure the input range is with the specified values.

3

en,it;s ok .But what i didn’t know . this function how to use these data and formula as what i writed “ob+(ob-oa)*(v-ib)/(ib-ia)” to calculate and why use this formula.en all in all i want know is the arithmetic logic about this formula.Also thank you for you answer.
ps:ob ==out range b; oa is also like this.
v==value;
ib/a==in range b/a;

4

If it’s clamped, then oa = A and ob = B.

5

You may have misunderstood my question, but in the case of this picture it turns out to be 33, and I know the formula but I don’t know how it’s derived.

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LCFT3TS172G2P77QPXUA51516×661 44.1 KB

6

A < B always, otherwise you get rubbish… :slight_smile:

image