diff --git a/Scripts/UIParticle.cs b/Scripts/UIParticle.cs index 537f6ac..73f1f91 100755 --- a/Scripts/UIParticle.cs +++ b/Scripts/UIParticle.cs @@ -236,6 +236,8 @@ namespace Coffee.UIExtensions UIParticle _parent; List _children = new List (); Matrix4x4 scaleaMatrix = default (Matrix4x4); + Vector3 _worldPos; + static ParticleSystem.Particle [] s_Particles = new ParticleSystem.Particle [4096]; /// /// Update meshes. @@ -284,21 +286,43 @@ namespace Coffee.UIExtensions Profiler.BeginSample ("Make Matrix"); scaleaMatrix = m_ParticleSystem.main.scalingMode == ParticleSystemScalingMode.Hierarchy - ? Matrix4x4.Scale (scale * Vector3.one) - : Matrix4x4.Scale (scale * rootCanvas.transform.localScale); + ? Matrix4x4.Scale (scale * Vector3.one) + : Matrix4x4.Scale (scale * rootCanvas.transform.localScale); Matrix4x4 matrix = default (Matrix4x4); switch (m_ParticleSystem.main.simulationSpace) { case ParticleSystemSimulationSpace.Local: matrix = scaleaMatrix - * Matrix4x4.Rotate (m_ParticleSystem.transform.rotation).inverse - * Matrix4x4.Scale (m_ParticleSystem.transform.lossyScale).inverse; + * Matrix4x4.Rotate (rectTransform.rotation).inverse + * Matrix4x4.Scale (rectTransform.lossyScale).inverse; break; case ParticleSystemSimulationSpace.World: matrix = scaleaMatrix - * m_ParticleSystem.transform.worldToLocalMatrix; + * rectTransform.worldToLocalMatrix; + + Vector3 newPos = rectTransform.position; + Vector3 delta = (newPos - _worldPos); + _worldPos = newPos; + if (canvas.renderMode != RenderMode.WorldSpace && !Mathf.Approximately (scale, 0) && 0 < delta.sqrMagnitude) + { + delta *= (1 - 1 / scale); + int count = m_ParticleSystem.particleCount; + if (s_Particles.Length < count) + { + s_Particles = new ParticleSystem.Particle [s_Particles.Length * 2]; + } + + m_ParticleSystem.GetParticles (s_Particles); + for (int i = 0; i < count; i++) + { + var p = s_Particles [i]; + p.position = p.position + delta; + s_Particles [i] = p; + } + m_ParticleSystem.SetParticles (s_Particles, count); + } break; case ParticleSystemSimulationSpace.Custom: break;