1 files changed, 48 insertions, 0 deletions
diff --git a/Runtime/Graphics/ParticleSystem/ParticleSystemUtils.h b/Runtime/Graphics/ParticleSystem/ParticleSystemUtils.h
new file mode 100644
index 0000000..45ec0a3
--- /dev/null
+++ b/Runtime/Graphics/ParticleSystem/ParticleSystemUtils.h
@@ -0,0 +1,48 @@
+#ifndef SHURIKENUTILS_H
+#define SHURIKENUTILS_H
+
+#include "ParticleSystemCommon.h"
+#include "Runtime/Math/Vector2.h"
+#include "Runtime/Math/Random/Random.h"
+
+class Matrix4x4f;
+struct ParticleSystemParticles;
+struct ParticleSystemReadOnlyState;
+struct ParticleSystemState;
+struct ParticleSystemEmissionState;
+struct ParticleSystemSubEmitterData;
+
+inline float InverseLerpFast01 (const Vector2f& scaleOffset, float v)
+{
+	return clamp01 (v * scaleOffset.x + scaleOffset.y);
+}
+
+inline float GenerateRandom(UInt32 randomIn)
+{
+	Rand rand(randomIn);
+	return Random01(rand);
+}
+
+inline void GenerateRandom3(Vector3f& randomOut, UInt32 randomIn)
+{
+	Rand rand(randomIn);
+	randomOut.x = Random01(rand);
+	randomOut.y = Random01(rand);
+	randomOut.z = Random01(rand);
+}
+
+inline UInt8 GenerateRandomByte (UInt32 seed)
+{
+	Rand rand (seed);
+	return Rand::GetByteFromInt (rand.Get ());
+}
+
+UInt32 GetGlobalRandomSeed ();
+void ResetGlobalRandomSeed ();
+Vector2f CalculateInverseLerpOffsetScale (const Vector2f& range);
+void KillParticle(const ParticleSystemReadOnlyState& roState, ParticleSystemState& state, ParticleSystemParticles& ps, size_t index, size_t& particleCount);
+void RecordEmit(ParticleSystemEmissionState& emissionState, const ParticleSystemSubEmitterData& subEmitterData, const ParticleSystemReadOnlyState& roState, ParticleSystemState& state, ParticleSystemParticles& ps, ParticleSystemSubType type, int subEmitterIndex, size_t particleIndex, float t, float dt, float length);
+bool GetTransformationMatrix(Matrix4x4f& output, const bool isSystemInWorld, const bool isCurveInWorld, const Matrix4x4f& localToWorld);
+bool GetTransformationMatrices(Matrix4x4f& output, Matrix4x4f& outputInverse, const bool isSystemInWorld, const bool isCurveInWorld, const Matrix4x4f& localToWorld);
+
+#endif // SHURIKENUTILS_H