有没有更聪明的方法来使用位于另一个名称空间中的代码

Is there a smarter way of using the code located in another namespace

我的核心页面上有这个。它创建 window 但不绘制任何东西

(deftype Program []
   GLEventListener
     (display [this drawable] (in-ns 'game-c.drawtriangle))
     (init [this drawable] "init")
     (dispose [this drawable] "dispose")
     (reshape [this drawable x y width height] "reshape")
   )

;set up and start window methods/functions
 (def glp (GLProfile/getDefault))
 (def caps (GLCapabilities. glp))
 (def window (GLWindow/create caps))

 (def ani (FPSAnimator. window 60 true))

 (doto window
  (.addGLEventListener (Program.))
  (.setSize 600 600)
  (.setTitle "CloGame")
  (.setVisible true)
  (.start ani)
 )

这是在window上绘制三角形的部分。但它不会那样做。我刚启动 repl,它显示空白 window、一个函数 return 值和一条错误消息(详见下文)

(ns game-c.drawtriangle)

(def gl (.getGL4 (.getGL window)))
(def tri [ [0.0 0.0] [0.5 0.0] [0.5 0.5] ])
(doto gl
  (.glCreateVertexArrays 1 tri)
)

这是 repl 输出

#object[clojure.lang.Namespace 0x49db0a8e "game-c.core"]

CompilerException java.lang.RuntimeException: 
com.jogamp.opengl.GLException: Caught IllegalStateException: Can't 
change/establish root binding of: *ns* with set on thread nREPL-worker-
1-Display-.x11_:0-1-EDT-1, compiling:(game-c/core.clj:33:2)

我认为可能有另一种使用位于 drawtriangle 中的代码的方法,但我不确定你会怎么做

试试这个:

(ns game-c.core
  (:require [game-c.drawtriangle :as tri] ))
...
 (display [this drawable] (tri/drawtriangle))
...

(ns game-c.drawtriangle
  (:require [game-c.core :as core] ))
(def gl (.getGL4 (.getGL core/window)))
...