Content-Length: 343300 | pFad | https://developers-jp.googleblog.com/2015/08/blog-post.html
char data[1000000]; // One Million bytes unsigned int sum = 0; for ( int i = 0; i < 1000000; ++i ) { sum += data[ i ]; }
char data[16000000]; // Sixteen Million bytes unsigned int sum = 0; for ( int i = 0; i < 16000000; i += 16 ) { sum += data[ i ]; }
struct PhysicsObject { Vec3 mPosition; Vec3 mVelocity; float mMass; float mDrag; Vec3 mCenterOfMass; Vec3 mRotation; Vec3 mAngularVelocity; float mAngularDrag; };
class PhysicsSystem { private: size_t mNumObjects; std::vector< Vec3 > mPositions; std::vector< Vec3 > mVelocities; std::vector< float > mMasses; std::vector< float > mDrags; // ... };
void UpdatePositions( PhysicsObject* objects, const size_t num_objects, const float delta_time ) { for ( int i = 0; i < num_objects; ++i ) { objects[i].mPosition += objects[i].mVelocity * delta_time; } }
void PhysicsSystem::SimulateObjects( const float delta_time ) { for ( int i = 0; i < mNumObjects; ++i ) { mPositions[ i ] += mVelocities[i] * delta_time; } }
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