protected static void AddQuad(UIVertexHelper vertexHelper, Vector3[] quadPositions, Color32 color, Vector3[] quadUVs)
{
int startIndex = vertexHelper.currentVertCount;
for (int i = 0; i < 4; ++i)
{
vertexHelper.AddVert(quadPositions[i], color, quadUVs[i]);
}
vertexHelper.AddTriangle(startIndex, startIndex + 1, startIndex + 2);
vertexHelper.AddTriangle(startIndex + 2, startIndex + 3, startIndex);
}
protected static void AddQuad(UIVertexHelper vertexHelper, Vector2 posMin, Vector2 posMax, Color32 color, Vector2 uvMin, Vector2 uvMax)
{
int startIndex = vertexHelper.currentVertCount;
vertexHelper.AddVert(new Vector3(posMin.x, posMin.y, 0), color, new Vector2(uvMin.x, uvMin.y));
vertexHelper.AddVert(new Vector3(posMin.x, posMax.y, 0), color, new Vector2(uvMin.x, uvMax.y));
vertexHelper.AddVert(new Vector3(posMax.x, posMax.y, 0), color, new Vector2(uvMax.x, uvMax.y));
vertexHelper.AddVert(new Vector3(posMax.x, posMin.y, 0), color, new Vector2(uvMax.x, uvMin.y));
vertexHelper.AddTriangle(startIndex, startIndex + 1, startIndex + 2);
vertexHelper.AddTriangle(startIndex + 2, startIndex + 3, startIndex);
}
private void GenerateSimpleSprite(UIVertexHelper vh, SpriteData sprite, Rect rect, Vector2 pivot, Color color)
{
Vector4 v = GetDrawingDimensions(sprite.padding, sprite.rect.size, pivot, rect, preserveAspect);
var uv = sprite.outerUv;
var color32 = color;
vh.Clear();
vh.AddVert(new Vector3(v.x, v.y), color32, new Vector2(uv.x, uv.y));
vh.AddVert(new Vector3(v.x, v.w), color32, new Vector2(uv.x, uv.w));
vh.AddVert(new Vector3(v.z, v.w), color32, new Vector2(uv.z, uv.w));
vh.AddVert(new Vector3(v.z, v.y), color32, new Vector2(uv.z, uv.y));
vh.AddTriangle(0, 1, 2);
vh.AddTriangle(2, 3, 0);
}
private void GenerateSprite(UIVertexHelper vh, SpriteData sprite, Rect rect, Vector2 pivot, Color color)
{
var spriteSize = new Vector2(sprite.rect.width, sprite.rect.height);
// Covert sprite pivot into normalized space.
var spritePivot = sprite.pivot / spriteSize;
var rectPivot = pivot;
Rect r = rect;
if (preserveAspect & spriteSize.sqrMagnitude > 0.0f)
{
PreserveSpriteAspectRatio(ref r, spriteSize, pivot);
}
var drawingSize = new Vector2(r.width, r.height);
var spriteBoundSize = sprite.bounds.size;
// Calculate the drawing offset based on the difference between the two pivots.
var drawOffset = (rectPivot - spritePivot) * drawingSize;
var color32 = color;
vh.Clear();
Vector2[] vertices = sprite.vertices;
Vector2[] uvs = sprite.uvs;
for (int i = 0; i < vertices.Length; ++i)
{
vh.AddVert(new Vector3((vertices[i].x / spriteBoundSize.x) * drawingSize.x - drawOffset.x, (vertices[i].y / spriteBoundSize.y) * drawingSize.y - drawOffset.y), color32, new Vector2(uvs[i].x, uvs[i].y));
}
UInt16[] triangles = sprite.triangles;
for (int i = 0; i < triangles.Length; i += 3)
{
vh.AddTriangle(triangles[i + 0], triangles[i + 1], triangles[i + 2]);
}
}