errant bronze
I am new to odinlang and want to try out by looking overview odinlang website.
when i want to try swizzle operator like .xyzw it works fine but when i use the function one it throwing error like this, i don't why??
can someone explain why my code doesn't works?
outer tusk
I am new to odinlang and want to try out by looking overview odinlang website.
...
what are you trying to do?
2.3 is not a valid array index
real nimbus
the indices to swizzle are much like x, y, z, w, but integers instead:
import "core:fmt"
main :: proc() {
x: [4]f32 = { 2.3, 7.7, 1.9, 9.0 }
y := swizzle(x, 2, 1, 0)
fmt.println(y)
}
indeed, swizzle takes some array, and some indices into that array
so
x := [3]f32{10,4,1}
y := swizzle(x, 0, 0, 1, 0, 2, 1, 2)
will be [10, 10, 4, 10, 1, 4, 1]
the second two errors are just cascading errors from the first one, they'll go away once you fix the swizzle call
errant bronze
So swizzle only can takes integers value and cannot use float numbers?
real nimbus
just run my example and you can see what it does
errant bronze
Okay ty
outer tusk
So swizzle only can takes integers value and cannot use float numbers?
what do you expect a float number to do in this context?
what is the 2.3rd item of an array?
errant bronze
what do you expect a float number to do in this context?
I just want try out if i can swizzle f32 instead int
outer tusk
you misunderstand what the function does then
swizzle accepts indices
y := swizzle(x, 1, 2)
is equivalent to doing
y := [2]f32{x[1], x[2]}
thus if you used a float inside swizzle, you'd be doing x[2.3]
errant bronze
yeahh