vertices | スプライトの Rect スペースでの頂点座標の配列。 |
triangles | スプライトのメッシュ三角形インデックスの配列 |
Sprite オブジェクトを新規に作成します
Vertex positions are in Sprite.rect space meaning from Rect.zero
to Rect.size. Pivot offset and transformation to unit space is done automatically.
The size of the triangle array must always be a multiple of 3. The vertices connected to the
triangle can be shared by simply indexing into the same vertex.
スプライトの UV は与えられたスプライトテクスチャ上のジオメトリをマッピングすることで自動的に計算されます。
関連項目: rect.
In the script example below the polygon shown in the
Sprite Editor - Polygon Resizing is used. In this
case the sprite has 8 sides. The right-most vertex is moved 50 pixels into the sprite.
This is the third vertex.
// Obtain the vertices from the script and modify the position // of one of them. Use OverrideGeometry() for this. using UnityEngine;
public class ExampleClass : MonoBehaviour { private SpriteRenderer spriteR; private Rect buttonPos1; private Rect buttonPos2;
void Start() { spriteR = gameObject.GetComponent<SpriteRenderer>(); // Create a blank Texture and Sprite to override later on. var texture2D = new Texture2D(64, 64); spriteR.sprite = Sprite.Create(texture2D, new Rect(0, 0, texture2D.width, texture2D.height), Vector2.zero, 100);
buttonPos1 = new Rect(10.0f, 10.0f, 200.0f, 30.0f); buttonPos2 = new Rect(10.0f, 50.0f, 200.0f, 30.0f); }
void OnGUI() { if (GUI.Button(buttonPos1, "Draw Debug")) DrawDebug();
if (GUI.Button(buttonPos2, "Perform OverrideGeometry")) ChangeSprite(); }
// Show the sprite triangles void DrawDebug() { Sprite sprite = spriteR.sprite;
ushort[] t = sprite.triangles; Vector2[] v = sprite.vertices; int a, b, c;
// draw the triangles using grabbed vertices for (int i = 0; i < t.Length; i = i + 3) { a = t[i]; b = t[i + 1]; c = t[i + 2]; Debug.DrawLine(v[a], v[b], Color.white, 100.0f); Debug.DrawLine(v[b], v[c], Color.white, 100.0f); Debug.DrawLine(v[c], v[a], Color.white, 100.0f); } }
// Edit the vertices obtained from the sprite. Use OverrideGeometry to // submit the changes. void ChangeSprite() { Sprite o = spriteR.sprite; Vector2[] sv = o.vertices;
for (int i = 0; i < sv.Length; i++) { sv[i].x = Mathf.Clamp( (o.vertices[i].x - o.bounds.center.x - (o.textureRectOffset.x / o.texture.width) + o.bounds.extents.x) / (2.0f * o.bounds.extents.x) * o.rect.width, 0.0f, o.rect.width);
sv[i].y = Mathf.Clamp( (o.vertices[i].y - o.bounds.center.y - (o.textureRectOffset.y / o.texture.height) + o.bounds.extents.y) / (2.0f * o.bounds.extents.y) * o.rect.height, 0.0f, o.rect.height);
// make a small change to the 3rd vertex if (i == 2) sv[i].x = sv[i].x - 50; }
o.OverrideGeometry(sv, o.triangles); } }
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