51 lines
858 B
V
51 lines
858 B
V
module sim
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import math
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// Vector3D is a 3D vector
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pub struct Vector3D {
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x f64
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y f64
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z f64
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}
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// vector creates a Vector3D passing x,y,z as parameteres
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pub fn vector(data Vector3D) Vector3D {
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return Vector3D{
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...data
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}
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}
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// addition
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pub fn (v Vector3D) + (v2 Vector3D) Vector3D {
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return Vector3D{
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x: v.x + v2.x
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y: v.y + v2.y
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z: v.z + v2.z
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}
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}
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// dot product
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pub fn (v Vector3D) * (v2 Vector3D) f64 {
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return (v.x * v2.x) + (v.y * v2.y) + (v.z * v2.z)
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}
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// scale gets a scaled vector
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pub fn (v Vector3D) scale(scalar f64) Vector3D {
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return Vector3D{
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x: v.x * scalar
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y: v.y * scalar
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z: v.z * scalar
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}
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}
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// norm_squared returns the square of the norm of the vector
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pub fn (v Vector3D) norm_squared() f64 {
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return v * v
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}
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// norm returns the norm of the vector
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pub fn (v Vector3D) norm() f64 {
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return math.sqrt(v.norm_squared())
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}
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