func (s *FpsController) SetupCamera() {
hor := v.MatrixRotate(v.Angle(-s.HorAxis), 0, 1, 0)
ver := v.MatrixRotate(v.Angle(-s.VerAxis), 1, 0, 0)
tr := v.MatrixTranslate(-s.Pos.X, -s.Pos.Y, -s.Pos.Z)
rot := ver.Mul(hor)
mat := rot.Mul(tr)
s.Camera.SetCustomModelview(s.Pos.X, s.Pos.Y, s.Pos.Z, &mat)
}
func CreateLookAtMatrix(eyex, eyey, eyez, centerx, centery, centerz, upx, upy, upz float32) *v.Matrix4 {
var x, y, z [3]float32
var mag float32
/* Make rotation matrix */
/* Z vector */
z[0] = centerx - eyex
z[1] = centery - eyey
z[2] = centerz - eyez
mag = float32(math.Sqrt(float64(z[0]*z[0] + z[1]*z[1] + z[2]*z[2])))
if mag != 0 { /* mpichler, 19950515 */
z[0] /= mag
z[1] /= mag
z[2] /= mag
}
/* Y vector */
y[0] = upx
y[1] = upy
y[2] = upz
/* X vector = Z cross Y */
x[0] = z[1]*y[2] - z[2]*y[1]
x[1] = -z[0]*y[2] + z[2]*y[0]
x[2] = z[0]*y[1] - z[1]*y[0]
mag = float32(math.Sqrt(float64(x[0]*x[0] + x[1]*x[1] + x[2]*x[2])))
if mag != 0 {
x[0] /= mag
x[1] /= mag
x[2] /= mag
}
/* Recompute Y = X cross Z */
y[0] = x[1]*z[2] - x[2]*z[1]
y[1] = -x[0]*z[2] + x[2]*z[0]
y[2] = x[0]*z[1] - x[1]*z[0]
// TODO inline this shit
a := (v.Matrix4{x[0], x[1], -x[2], 0,
y[0], y[1], -y[2], 0,
z[0], z[1], -z[2], 0,
0, 0, 0, 1.0})
r := a.Mul(v.MatrixTranslate(-eyex, -eyey, -eyez))
return &r
}
func (s *SimpleRendererWModule) Render() {
rop := glutils.NewSimpleRenderOp(false, s.Mesh)
pos := s.Object.Position
matrix := v.MatrixTranslate(pos.X, pos.Y, pos.Z)
rop.Render(s.Context.Camera, matrix)
}