Declare the constants and variables etc

Assignment Help Computer Graphics

Reference no: EM132263478

Assignment -

Part 1 - declaration etc.

Declare the constants and variables etc.

Part 2 - window.onLoad

Setup the order of operations

init();

setupCameraAndLight();

createGeometry();

createWindmillMaterials();

setupDatGui();

render();

Part 3 - Initialization

1. Configures the renderer and adds it to the dom

2. Initialize an OrbitControls object

Part 4 - Setup the Camera and Lights

The setupCameraAndLight() function will do the following:

1. Sets the position and lookAt properties of the camera.

2. Create and add an AmbientLight to the scene.

3. Create and add a DirectionalLight to the scene which must be able to cast shadows.

4. Create and add a HemisphereLight to the scene color.

5. Create and add a SpotLight to the scene color which must be able to cast shadows.

Part 5 - Add the required geometry to the scene

The createGeometries() function will do the following:

1. AxisHelper - Create and add an AxisHelper to your scene length 100.

2. Plane - Create and add a plane to your scene that is able to receive shadows.

Part 6 - Add the materials

The createWindmillMaterials() function will do the following:

1. Create a MeshLambertMaterial for the arms.

2. Create a MeshStandardMaterial for the tower and axle.

Part 7 - Setup the necessary gui controls

The initGuiControls() function will do the following:

1. "Scene rotation" - checkbox. Only stops the scene rotation

2. "enableSpotlight" - function

3. "Arm color" - color

4. "Arm visibility" - bool

5. "Body color" - color

6. "Body visibility" - bool

7. "Rotation speed" - numeric slider range 0 to 0.04. Sets the speed for both the arms and scene

8. "Windmill" - folder

9. "Arm length" - numeric slider. (min=12, max=18 and step=2). Default =16.

10. "Number of Arms" - numeric slider. (min=2, max=5 and step=1) . Default =3.

11. "Tower height" - numeric slider. (min=18, max=27 and step=3) . Default =22.

12. "Create" - function calls the createWindmill() with the above values to obtain an object and adds it to the scene.

Part 8 - Add the object to the scene

The createWindmill() function will take armLength. bodyLength, numberOfArms and the armInclination = 0.25 and do the following:

1. Object3D - To serve as the container for the component of this object

2. CylinderGeometry - that is scaled appropriately to be the body of the hovercraft.

Uses the towerMaterial that was created in the Part 6

3. Object3D - To serve as the container for the arms and axle. You will have position it properly and then add it to the container in step 1.

4. BoxGeometry - use 4 for the width, 0.2 for the thickness and the length is specified by the argument.

Uses the armMaterial that was created in Part 6

This must be repeated as many times as specified by the argument

5. CylinderGeometry -to be the axle of the object.

Uses the bodyMaterial that was created in the Part 6

6. Returns the completed 3-D object.

Part 9 - Render the scene

The render() function will do the following:

1. Update the orbitController object.

2. Rotate the arm based on the value in the dat.gui controller.

3. Rotate the scene or stop based on the dat.gui controller.

Attachment:- Assignment Files.rar

Reference no: EM132263478

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