public static Vector2 [][] Trace(Sprite sprite, Rect pixelRect)
{
return(Trace(
sprite.texture,
pixelRect,
RasterHelper.GetPivot(sprite),
RasterHelper.GetPixelsPerUnit(sprite)
));
}
public static Vector2 [][] Trace(Sprite sprite)
{
var texture = sprite.texture;
var pixelRect = new Rect(0, 0, texture.width, texture.height);
return(Trace(
sprite.texture,
pixelRect,
RasterHelper.GetPivot(sprite),
RasterHelper.GetPixelsPerUnit(sprite)
));
}
public static void CloneTextureAndSprite(SpriteRenderer spriteRenderer)
{
var sprite = spriteRenderer.sprite;
var texClone = Object.Instantiate(sprite.texture) as Texture2D;
spriteRenderer.sprite = Sprite.Create(
texClone,
sprite.rect,
RasterHelper.GetPivot(sprite),
RasterHelper.GetPixelsPerUnit(sprite)
);
spriteRenderer.sprite.name = sprite.name + "(Clone)";
}
private void PerformTrace()
{
var spriteRenderer = GetComponent <SpriteRenderer> ();
var sprite = spriteRenderer.sprite;
var ms = new MarchingSquares(
sprite.texture,
alphaThreshold: AlphaThreshold,
clockWise: ClockWise,
mipLevel: MipLevel
);
polyPath = ms.TraceContours();
float pixelsPerUnit = RasterHelper.GetPixelsPerUnit(sprite);
float scale = (1 << MipLevel) / pixelsPerUnit;
var pivot = RasterHelper.GetPivot(sprite);
var offset = -Vector2.Scale(sprite.bounds.size, pivot);
polyPath.Scale(scale);
polyPath.Translate(offset);
int pointCountBeforeOpt = polyPath.TotalPointCount;
float worldScale = Common.WorldScale(spriteRenderer.transform);
if (ReduceByMinDistance)
{
polyPath.ReduceByMinDistance(MinDistance, MinVertexCount);
}
if (ReduceByMinTriangleArea)
{
float globalScaleSq = worldScale * worldScale;
polyPath.ReduceByMinTriangleArea(MinTriangleArea / globalScaleSq, MinVertexCount);
}
if (ReduceCodirected)
{
polyPath.ReduceCodirected(MinAngle * Mathf.Deg2Rad, MinVertexCount);
}
int pointCountAfterOpt = polyPath.TotalPointCount;
print(string.Format(
"Reduction: {0}/{1} ({2:P})",
pointCountAfterOpt, pointCountBeforeOpt, 1.0f - ( float )pointCountAfterOpt / pointCountBeforeOpt
));
}
private PolygonPath BuildPolyPath(SpriteRenderer spriteRenderer)
{
var sprite = spriteRenderer.sprite;
float buildPathStartTime = Time.realtimeSinceStartup;
float msStartTime = Time.realtimeSinceStartup;
var ms = new MarchingSquares(
sprite.texture,
alphaThreshold: AlphaThreshold,
clockWise: ClockWise,
mipLevel: MipLevel
);
float msTimeElapsed = Time.realtimeSinceStartup - msStartTime;
float traceStartTime = Time.realtimeSinceStartup;
var polyPath = ms.TraceContours();
float traceTimeElapsed = Time.realtimeSinceStartup - traceStartTime;
float pixelsPerUnit = RasterHelper.GetPixelsPerUnit(sprite);
float scale = (1 << MipLevel) / pixelsPerUnit;
var pivot = RasterHelper.GetPivot(sprite);
var offset = -Vector2.Scale(sprite.bounds.size, pivot);
float transformStartTime = Time.realtimeSinceStartup;
polyPath.Scale(scale);
polyPath.Translate(offset);
float transformTimeElapsed = Time.realtimeSinceStartup - transformStartTime;
#if MUTABLE_COLLIDER_STATS
float buildPathTimeElapsed = Time.realtimeSinceStartup - buildPathStartTime;
print(string.Format(
"Build path timing -- Trace: {0}, Transform: {1}, Get pixels: {2}, Total: {3}",
traceTimeElapsed, transformTimeElapsed, msTimeElapsed, buildPathTimeElapsed
));
#endif
return(polyPath);
}