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Animation of the Human Heart

Collected by:

Lukman.AFaculty of ScienceM.E.T Tirur Central School

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Structure of the Heart

Chambers of the heart

The Atrium

Upper two chambers

Divided into the left Atria an the Right Atria Brings in Blood from the Veins

The Ventricles

Lower two chambers

Divided into left ventricle and right ventricle

Pumps in blood into the arteries

Collected by:

Lukman.AFaculty of ScienceM.E.T Tirur Central School

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Structure (Contd)

Valves of the Heart

AtrioVentricular valves

Lie between the atrium and the ventricles

Semilunar valves

Lie between the ventricles and the arteries

Collected by:

Lukman.AFaculty of ScienceM.E.T Tirur Central School

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Functioning of the heart

Left hand side of the heart brings in oxygen rich blood, red color in theanimation Right hand side of the heart brings in oxygen deficient blood, blue in color in the

animation

Cardiac cycle

Two Phases :

Diastole Phase

o Both atria and the ventricles are relaxed

Systole Phase

o Chambers contract to push blood

The heart beat cycle

Atrium brings in blood from the veins and expands to fill it up

Atrium then contracts and pushes blood into the ventricles, Ventricles expand

The atrioventricular valves close in order to prevent backward flow of blood

Ventricles contract and push in blood into the arteries

The semilunar valves close in order to prevent the backward flow of blood

Cycle repeats

Center for Computational VisualizationInstitute of Computational and Engineering SciencesDepartment of Computer Sciences University of Texas at Austin August2004

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Animating the heart

Software used was Maya

Rigged simulation

The Chambers expanding and Contracting

Three snapshots of the heart were created using polygon deformers with simple

push, pull and smooth operators

Atrium Expanded

Atrium Contracted and Ventricles expanded

Ventricles contracted

Original mesh in made to blend into these shapes using blend deformer tool

The heart alternates between these three cycles followed by a small amount ofrest time and then repeats

Center for Computational VisualizationInstitute of Computational and Engineering SciencesDepartment of Computer Sciences University of Texas at Austin August2004

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Animating the heart (Contd)

The blood flow

Blood is made up of tiny particles made to flow along curves inside theheart

Each emitter emit 15,000 particles per second, 7 such emitters

Bump shaded texture to each particle to give the blood effect

The pulsating effect is achieved throughout turning the emitters on andoff at regular intervals

Valves opening

Made to rotate along its pivot

Used polygon deformers and blend shapes to show their movement

Center for Computational VisualizationInstitute of Computational and Engineering SciencesDepartment of Computer Sciences University of Texas at Austin August2004

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Pictures

Atrium Expanded

Center for Computational VisualizationInstitute of Computational and Engineering SciencesDepartment of Computer Sciences University of Texas at Austin August2004

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Pictures (Contd)

Valve Opening

Center for Computational VisualizationInstitute of Computational and Engineering SciencesDepartment of Computer Sciences University of Texas at Austin August2004

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Pictures (Contd)

Ventricle Expanded

Center for Computational VisualizationInstitute of Computational and Engineering SciencesDepartment of Computer Sciences University of Texas at Austin August2004

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Pictures (Contd)

Ventricle Contracts

Center for Computational VisualizationInstitute of Computational and Engineering SciencesDepartment of Computer Sciences University of Texas at Austin August2004

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Pictures (Contd)

Blood Leaving

Center for Computational VisualizationInstitute of Computational and Engineering SciencesDepartment of Computer Sciences University of Texas at Austin August2004

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Future work

Have the blood particles collide with the wall of the heart for more accuracy andprecision

Make the blood deform the heart

Have the valves react with the movement of the blood

Physical Simulation

Center for Computational VisualizationInstitute of Computational and Engineering SciencesDepartment of Computer Sciences University of Texas at Austin August2004

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Conclusion