unity GUI绘制直线条

王者再临

1. using UnityEngine;
   
2. 
   
3. using System.Collections;
   
4. 
   
5. using System;
   
6. 
   
7. public class DrawLine : MonoBehaviour {
   
8. 
   
9. public Vector2[] m_point;//特征点位置
   
10. 
    
11. public Color m_lineColor;
    
12. 
    
13. private static Texture2D m_texure;//最终渲染得到的带有折线的纹理
    
14. 
    
15. public void InitCanvas(Vector2[] point, int width, int height) {
    
16. 
    
17. m_point = point;
    
18. 
    
19. m_texure = new Texture2D(width,height);
    
20. 
    
21. }
    
22. 
    
23. public IEnumerator Draw()
    
24. 
    
25. {
    
26. 
    
27. //清空纹理对象
    
28. 
    
29. for (int i = 0; i < 100; i++)
    
30. 
    
31. {
    
32. 
    
33. for (int j = 0; j < 100; j++)
    
34. 
    
35. {
    
36. 
    
37. m_texure.SetPixel(i, j, Color.white);
    
38. 
    
39. }
    
40. 
    
41. }
    
42. 
    
43. Vector2 currentPoint = m_point[0];
    
44. 
    
45. for (int i = 1; i < m_point.Length; i++) {
    
46. 
    
47. for (float j = 0; j < 1; j = j + 0.01f) {
    
48. 
    
49. Vector2 temp = Vector2.Lerp(m_point[i-1],m_point[i],j);
    
50. 
    
51. m_texure.SetPixel(Convert.ToInt32(temp.x),Convert.ToInt32(temp.y),m_lineColor);
    
52. 
    
53. }
    
54. 
    
55. currentPoint = m_point[i];
    
56. 
    
57. }
    
58. 
    
59. m_texure.Apply();
    
60. 
    
61. yield return m_texure;
    
62. 
    
63. }
    
64. 
    
65. void OnPostRender()
    
66. 
    
67. {
    
68. 
    
69. StartCoroutine(Draw());
    
70. 
    
71. }
    
72. 
    
73. void Start() {
    
74. 
    
75. InitCanvas(m_point, 100, 100);
    
76. 
    
77. }
    
78. 
    
79. void OnGUI()
    
80. 
    
81. {
    
82. 
    
83. GUI.DrawTexture(new Rect(0, 0, 100, 100), m_texure);
    
84. 
    
85. }
    
86. 
    
87. }

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我不再年轻

好代码，不错， 学习了！