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Align raymath functions with C versions #515

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Merged
merged 6 commits into from
Nov 14, 2025
Merged

Align raymath functions with C versions #515

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bd3f423
Align raymath functions with C versions
djfinlay Oct 14, 2025
271288d
Generate methods for raymath functions
djfinlay Oct 20, 2025
9968cd6
Fix examples
djfinlay Oct 20, 2025
74b4a24
Skip unstable test cases for Vector3OrthoNormalize
djfinlay Oct 20, 2025
b5d3006
Fix failures from fuzz tests
djfinlay Oct 23, 2025
6b2b83a
Normalize some test inputs rather than lowering precision
djfinlay Oct 27, 2025
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4 changes: 2 additions & 2 deletions physics/physics.go
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Original file line number Diff line number Diff line change
Expand Up @@ -935,7 +935,7 @@ func solveCircleToCircle(manifold *Manifold) {
// Calculate translational vector, which is normal
var normal rl.Vector2 = rl.Vector2Subtract(bodyB.Position, bodyA.Position)

distSqr := rl.Vector2LenSqr(normal)
distSqr := rl.Vector2LengthSqr(normal)
radius := bodyA.Shape.Radius + bodyB.Shape.Radius

// Check if circles are not in contact
Expand Down Expand Up @@ -1246,7 +1246,7 @@ func initializeManifolds(manifold *Manifold) {
// The idea is if the only thing moving this object is gravity, then the collision should be
// performed without any restitution
rad := rl.NewVector2(gravityForce.X*deltaTime/1000, gravityForce.Y*deltaTime/1000)
if rl.Vector2LenSqr(radiusV) < (rl.Vector2LenSqr(rad) + epsilon) {
if rl.Vector2LengthSqr(radiusV) < (rl.Vector2LengthSqr(rad) + epsilon) {
manifold.Restitution = 0
}
}
Expand Down
27 changes: 27 additions & 0 deletions raylib/internal/cmd/genraymath/binding.go.tmpl
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Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
// Code generated by ./internal/cmd/genraymath DO NOT EDIT.

package rl

//#include "raymath.h"
import "C"

import "unsafe"

{{ range . -}}
{{ if .SkipBinding }}{{ continue }}{{ end }}
{{ $fn := .Name }}
func c{{ .Name }}({{ template "params" . }}) {{ .ReturnType }} {
{{- range $param := .Params }}
{{- range $param.Names }}
c{{ . }} := {{ $param.CType . }}
{{- end }}
{{- end }}
{{- if .ReturnType }}
ret := C.{{ $fn }}({{ template "cargs" . }})
return {{ .ReturnValue }}
{{- else }}
C.{{ $fn }}({{ template "cargs" . }})
{{- end }}
}

{{ end }}
160 changes: 160 additions & 0 deletions raylib/internal/cmd/genraymath/helper.go.tmpl
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Original file line number Diff line number Diff line change
@@ -0,0 +1,160 @@
{{ define "params" }}
{{- range $i, $param := .Params -}}
{{- range $j, $name := .Names -}}
{{- if or $i $j }}, {{ end -}}
{{ $name }}
{{- end }} {{ $param.TypeName }}
{{- end -}}
{{ end }}

{{ define "args" }}
{{- range $i, $param := .Params -}}
{{- range $j, $name := .Names -}}
{{- if or $i $j }}, {{ end -}}
{{ $name }}
{{- end -}}
{{- end -}}
{{ end }}

{{ define "testargs" }}
{{- range $i, $param := .Params -}}
{{- range $j, $name := .Names -}}
{{- if or $i $j }}, {{ end -}}
{{ testvar $name }}
{{- end -}}
{{- end -}}
{{ end }}

{{ define "methodparams" }}
{{- $comma := false -}}
{{- range $i, $param := .Params -}}
{{- range $j, $name := .Names -}}
{{- if or $i $j -}}
{{- if $comma }} ,{{ end -}}
{{- $comma = true -}}
{{ $name }}
{{- end -}}
{{- end -}}
{{- if or $i (gt (len .Names) 1) }} {{ $param.TypeName }}{{- end -}}
{{- end -}}
{{ end }}

{{ define "methodargs" }}
{{- range $i, $param := .Params -}}
{{- range $j, $name := .Names -}}
{{- if or $i $j }}, {{ $name }}
{{- end -}}
{{- end -}}
{{- end -}}
{{ end }}

{{ define "cargs" }}
{{- range $i, $param := .Params -}}
{{- range $j, $name := .Names -}}
{{- if or $i $j }}, {{ end -}}
c{{ $name }}
{{- end -}}
{{- end -}}
{{ end }}

{{ define "fuzzparams" }}
{{- range $i, $param := .Params -}}
{{- range $j, $name := .Names -}}
{{- if eq $param.TypeName "Vector2" }}
{{ $name }}X, {{ $name }}Y float32,
{{- else if eq $param.TypeName "Vector3" }}
{{ $name }}X, {{ $name }}Y, {{ $name }}Z float32,
{{- else if eq $param.TypeName "Vector4" }}
{{ $name }}X, {{ $name }}Y, {{ $name }}Z, {{$name}}W float32,
{{- else if eq $param.TypeName "Quaternion" }}
{{ $name }}X, {{ $name }}Y, {{ $name }}Z, {{$name}}W float32,
{{- else if eq $param.TypeName "Mat2" }}
{{ $name }}M00, {{ $name }}M01, {{ $name }}M10, {{$name}}M11 float32,
{{- else if eq $param.TypeName "Matrix" }}
{{ $name }}M0, {{ $name }}M4, {{ $name }}M8, {{ $name }}M12,
{{ $name }}M1, {{ $name }}M5, {{ $name }}M9, {{ $name }}M13,
{{ $name }}M2, {{ $name }}M6, {{ $name }}M10, {{ $name }}M14,
{{ $name }}M3, {{ $name }}M7, {{ $name }}M11, {{ $name }}M15 float32,
{{- else }}
{{ testvar $name }} {{ $param.TypeName }},
{{- end -}}
{{- end -}}
{{- end }}
{{ end }}

{{- define "fuzzvars" -}}
{{- range $i, $param := .Params -}}
{{- range $j, $name := .Names -}}
{{- if eq $param.TypeName "Vector2" }}
{{ testvar $name }} := NewVector2({{ $name }}X, {{ $name }}Y)
{{- else if eq $param.TypeName "Vector3" }}
{{ testvar $name }} := NewVector3({{ $name }}X, {{ $name }}Y, {{ $name }}Z)
{{- else if eq $param.TypeName "Vector4" }}
{{ testvar $name }} := NewVector4({{ $name }}X, {{ $name }}Y, {{ $name }}Z, {{$name}}W)
{{- else if eq $param.TypeName "Quaternion" }}
{{ testvar $name }} := NewQuaternion({{ $name }}X, {{ $name }}Y, {{ $name }}Z, {{$name}}W)
{{- else if eq $param.TypeName "Mat2" }}
{{ testvar $name }} := NewMat2({{ $name }}M00, {{ $name }}M01, {{ $name }}M10, {{$name}}M11)
{{- else if eq $param.TypeName "Matrix" }}
{{ testvar $name }} := NewMatrix(
{{ $name }}M0, {{ $name }}M4, {{ $name }}M8, {{ $name }}M12,
{{ $name }}M1, {{ $name }}M5, {{ $name }}M9, {{ $name }}M13,
{{ $name }}M2, {{ $name }}M6, {{ $name }}M10, {{ $name }}M14,
{{ $name }}M3, {{ $name }}M7, {{ $name }}M11, {{ $name }}M15,
)
{{- end -}}
{{- if $param.Normalize }}
{{ testvar $name }} = {{ $param.TypeName}}Normalize({{ testvar $name }})
{{- end -}}
{{- end -}}
{{- end -}}
{{- end -}}

{{- define "fuzzcorpus" -}}
f.Add(
{{ range $i, $param := .Params -}}
{{- range $j, $name := .Names -}}
{{- if eq $param.TypeName "Vector2" -}}
float32(1), float32(2),
{{ else if eq $param.TypeName "Vector3" -}}
float32(1), float32(2), float32(3),
{{ else if eq $param.TypeName "Vector4" -}}
float32(1), float32(2), float32(3), float32(4),
{{ else if eq $param.TypeName "Quaternion" -}}
float32(1), float32(2), float32(3), float32(4),
{{ else if eq $param.TypeName "Mat2" -}}
float32(1), float32(2), float32(3), float32(4),
{{ else if eq $param.TypeName "Matrix" -}}
float32(1), float32(2), float32(3), float32(4),
float32(1), float32(2), float32(3), float32(4),
float32(1), float32(2), float32(3), float32(4),
float32(1), float32(2), float32(3), float32(4),
{{ else -}}
float32({{ add $j 1 }}),
{{ end -}}
{{- end -}}
{{- end -}}
)
{{- end -}}

{{- define "quickvars" -}}
{{- range $i, $param := .Params -}}
{{- range $j, $name := .Names }}
{{ testvar $name }} := {{ if eq $param.TypeName "Vector2" -}}
NewVector2(1, 2)
{{- else if eq $param.TypeName "Vector3" -}}
NewVector3(1, 2, 3)
{{- else if eq $param.TypeName "Vector4" -}}
NewVector4(1, 2, 3, 4)
{{- else if eq $param.TypeName "Quaternion" -}}
NewQuaternion(1, 2, 3, 4)
{{- else if eq $param.TypeName "Mat2" -}}
NewMat2(1, 2, 3, 4)
{{- else if eq $param.TypeName "Matrix" -}}
NewMatrix(1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4)
{{- else -}}
float32({{ add $j 1 }})
{{- end -}}
{{- end -}}
{{- end -}}
{{- end -}}
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