go-glmatrix is a golang version of glMatrix, which is ``designed to perform vector and matrix operations stupidly fast''.
package main
import (
"fmt"
glm "github.com/technohippy/go-glmatrix"
)
func main() {
// config
rotateQuat := glm.QuatFromValues(1, 2, 3, 4)
translateVec3 := glm.Vec3FromValues(1, 2, 3)
scale := []float64{4, 5, 6}
rotateOrigin := []float64{7, 8, 9}
// construct matrix
transMat := glm.Mat4Create()
glm.Mat4Identity(transMat)
glm.Mat4Translate(transMat, transMat, translateVec3)
glm.Mat4Translate(transMat, transMat, rotateOrigin)
rotateMat := glm.Mat4Create()
rotateMat = glm.Mat4FromQuat(rotateMat, rotateQuat)
matrix := glm.Mat4Multiply(glm.Mat4Create(), transMat, rotateMat)
glm.Mat4Scale(matrix, matrix, scale)
negativeOrigin := glm.Vec3Negate(glm.Vec3Create(), rotateOrigin)
glm.Mat4Translate(matrix, matrix, negativeOrigin)
// transform position
position := glm.Vec3FromValues(10, 20, 30)
glm.Vec3TransformMat4(position, position, matrix)
fmt.Printf(glm.Vec3Str(position)) // => vec3(1280, -290, -42)
}MIT