func multiplexEvents(engine g3.Engine) {
for {
select {
case me := <-engine.MouseEventChan():
alpha += float32(-me.Dx) / 100
beta += float32(-me.Dy) / 100
beta = g3.Clamp(beta, -g3.Pi/2, g3.Pi/2)
ud := g3.MakeXRotationMatrix(beta)
lr := g3.MakeZRotationMatrix(alpha)
m := lr.Multiply(&ud)
dir = m.Transform(dirBase)
up = m.Transform(upBase)
left = m.Transform(leftBase)
case ke := <-engine.KeyEventChan():
//fmt.Println(ke)
if ke.Type == g3.KeyPressed {
switch ke.Key {
case g3.KeyW:
speed += 0.0001
case g3.KeyS:
speed -= 0.0001
case g3.KeyA:
pos.Accumulate(left.Scaled(0.01))
case g3.KeyD:
pos.Accumulate(left.Scaled(-0.01))
case g3.KeyF1:
if wireframe {
engine.GetGraphicsDevice().SetFillMode(g3.FillSolid)
} else {
engine.GetGraphicsDevice().SetFillMode(g3.FillWireFrame)
}
wireframe = !wireframe
case g3.KeyPageUp:
pos.Z += 0.01
case g3.KeyPageDown:
pos.Z -= 0.01
}
}
case fe := <-engine.FrameEventChan():
update(engine, fe.DeltaTime)
render(engine)
engine.SwapBuffers()
case se := <-engine.SystemEventChan():
//fmt.Println(se)
if se.Type == g3.SystemQuit {
return
}
}
}
}
func calculateLOD(frustum *g3.Frustum, center *g3.Vec3, width float32, maxLOD uint) int {
// TODO: Use actual position instead of near clipping plane for distance calculation?
d := int(g3.Clamp(frustum.Near.DistanceToPoint(center)/(width), 0.0, float32(maxLOD-1)))
return d
}