Question

JavaScript => public static function LoadOrtho(): void;
C# => public static void LoadOrtho();

Description 描述

Helper function to set up an ortho perspective transform.

辅助函数用来做一个正交投影变换。

After calling LoadOrtho, the viewing frustum goes from (0,0,-1) to (1,1,100). LoadOrtho can be used for drawing primitives in 2D.

调用这个函数后，视野的锥型区域从(0,0,-1) to (1,1,100)。这个函数用来绘制2D图形。

JavaScript:

	// Draws a triangle over an already drawn triangle
	var mat : Material;
 
	function OnPostRender() {
		if (!mat) {
			Debug.LogError("Please Assign a material on the inspector");
			return;
		}
		GL.PushMatrix();
		mat.SetPass(0);
		GL.LoadOrtho();
		GL.Color(Color.red);
		GL.Begin(GL.TRIANGLES);
		GL.Vertex3(0.25,0.1351,0);
		GL.Vertex3(0.25,0.3,0);
		GL.Vertex3(0.5,0.3,0);
		GL.End();
		GL.Color(Color.yellow);
		GL.Begin(GL.TRIANGLES);
		GL.Vertex3(0.5,0.25,-1);
		GL.Vertex3(0.5,0.1351,-1);
		GL.Vertex3(0.1,0.25,-1);
		GL.End();
		GL.PopMatrix();
	}

C#:

using UnityEngine;
using System.Collections;
 
public class ExampleClass : MonoBehaviour {
    public Material mat;
    void OnPostRender() {
        if (!mat) {
            Debug.LogError("Please Assign a material on the inspector");
            return;
        }
        GL.PushMatrix();
        mat.SetPass(0);
        GL.LoadOrtho();
        GL.Color(Color.red);
        GL.Begin(GL.TRIANGLES);
        GL.Vertex3(0.25F, 0.1351F, 0);
        GL.Vertex3(0.25F, 0.3F, 0);
        GL.Vertex3(0.5F, 0.3F, 0);
        GL.End();
        GL.Color(Color.yellow);
        GL.Begin(GL.TRIANGLES);
        GL.Vertex3(0.5F, 0.25F, -1);
        GL.Vertex3(0.5F, 0.1351F, -1);
        GL.Vertex3(0.1F, 0.25F, -1);
        GL.End();
        GL.PopMatrix();
    }
}

GL