diff options
Diffstat (limited to 'frontend/2d/_rigidbody/rigidbody_2.js')
| -rw-r--r-- | frontend/2d/_rigidbody/rigidbody_2.js | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/frontend/2d/_rigidbody/rigidbody_2.js b/frontend/2d/_rigidbody/rigidbody_2.js deleted file mode 100644 index 76d8047..0000000 --- a/frontend/2d/_rigidbody/rigidbody_2.js +++ /dev/null @@ -1,146 +0,0 @@ -/// <reference path="../../scripts/jquery-3.5.1.min.js"/> -/// <reference path="../../_shared/math/vec2.js" /> -/// <reference path="../../_shared/math/mat4.js" /> -/// <reference path="../../_shared/2d/shader.js" /> -/// <reference path="../../_shared/math/circle.js" /> -/// <reference path="../../_shared/2d/program_common.js" /> - -(function() { - function main() { - // Define Constants - const CIRCLE_RADIUS = 16; - const GRAVITY = 9.8; - - // Retrieve context - const lProgramContext = getContext('#rigidbody_2'); - - if (lProgramContext.gl === null) { - console.error('Unable to initialize WebGL. Your browser or machine may not support it.'); - return; - } - - lProgramContext.gl.clearColor(0.0, 0.0, 0.0, 1.0); - lProgramContext.gl.clear(lProgramContext.gl.COLOR_BUFFER_BIT); - - function run() { - console.log('Running Rigid Body 2'); - lProgramContext.load().then(function(pProgramInfo) { - const lCircle = circle(lProgramContext.gl, CIRCLE_RADIUS, 30, [ - { x: 1, y: 1, z: 0, w: 1 }, - { x: 1, y: 0, z: 1, w: 1 }, - { x: 0, y: 1, z: 1, w: 1 }, - { x: 0, y: 1, z: 0, w: 1 } - ], vec2(lProgramContext.width / 2.0, lProgramContext.height / 2.0)); - - function update(pDeltaTimeSeconds) { - // Same physics updates from part 1 - applyForce(vec2(0, -1.0 * (lCircle.mass * GRAVITY))); - const lCurrentAcceleration = scaleVec2(lCircle.force, 1.0 / lCircle.mass); - lCircle.velocity = addVec2(lCircle.velocity, scaleVec2(lCurrentAcceleration, pDeltaTimeSeconds)); - lCircle.position = addVec2(lCircle.position, scaleVec2(lCircle.velocity, pDeltaTimeSeconds)); - lCircle.force = vec2(); - - // Angular code starts here - - // Retrieve the moment of inertia for our shape (Ours is a circle by default) - const lMomentOfInertia = getCircleMomentOfInertia(lCircle); - - // Calculate the angular acceperation (omega = T / I) - const lAngularAcceleration = lCircle.torque / lMomentOfInertia; - - // Calculate the rotation in radians - lCircle.rotationVelocity += lAngularAcceleration * pDeltaTimeSeconds; - lCircle.rotationRadians += lCircle.rotationVelocity * pDeltaTimeSeconds; - lCircle.torque = 0; - - // Calculate the model as previously, but this time, also rotate it - lCircle.model = rotateMatrix2d(translateMatrix(mat4(), lCircle.position.x, lCircle.position.y, 0), lCircle.rotationRadians); - - // Render Code only - lProgramContext.gl.clearColor(0.0, 0.0, 0.0, 1.0); - lProgramContext.gl.clearDepth(1.0); - lProgramContext.gl.enable(lProgramContext.gl.DEPTH_TEST); - lProgramContext.gl.depthFunc(lProgramContext.gl.LEQUAL); - lProgramContext.gl.clear(lProgramContext.gl.COLOR_BUFFER_BIT | lProgramContext.gl.DEPTH_BUFFER_BIT); - - lProgramContext.gl.useProgram(pProgramInfo.program); - lProgramContext.gl.uniformMatrix4fv(pProgramInfo.uniformLocations.projection, false, lProgramContext.perspective); - lProgramContext.gl.uniformMatrix4fv(pProgramInfo.uniformLocations.model, false, lCircle.model); - - renderCircle(lProgramContext.gl, pProgramInfo, lCircle); - } - - const TORQUE_MULTIPLIER = 100.0; // TODO: This may be unncessary - - function applyForce(pForceVector, pPointOfApplication) { - if (pPointOfApplication !== undefined) { - const lOriginToPointOfApp = subVec2(vec2(), pPointOfApplication), // The point of application is relative to the model (i.e. the center of the circle, not the scene) - lPerpVec = vec2(-lOriginToPointOfApp.y, lOriginToPointOfApp.x); // Retrieve the perpendicular vector - - // Calculate the torque from the perp dot (T = r_perp . F) - lCircle.torque += TORQUE_MULTIPLIER * dot2(lPerpVec, pForceVector); - } - - lCircle.force = addVec2(lCircle.force, pForceVector); - } - - function cleanup() { - lProgramContext.gl.deleteBuffer(lCircle.buffer); - lProgramContext.gl.deleteProgram(pProgramInfo.program); - lProgramContext.gl.clearColor(0.0, 0.0, 0.0, 1.0); - lProgramContext.gl.clear(lProgramContext.gl.COLOR_BUFFER_BIT); - } - - function reset() { - lExitRequestFunc(); - lProgramContext.reset(); - $('#rigidbody_2_force_submit_button').unbind('submit').submit(false); - } - - const lExitRequestFunc = requestUpdateLoop(update, cleanup); - lProgramContext.stopButton.on('click', reset); - $('#rigidbody_2_force_submit_button').submit(function(pEv) { - pEv.preventDefault(); - pEv.stopPropagation(); - - // Read in the force vector from the form - const lForceGroup = $('#rigidbody_2_force_input'), - lPositionGroup = $('#rigidbody_2_position_input'); - - let lForceVectorX = lForceGroup.find('.vec2_x_input').val(), - lForceVectorY = lForceGroup.find('.vec2_y_input').val(); - - if (lForceVectorX.length === 0) { - lForceVectorX = 0; - } - - if (lForceVectorY.length === 0) { - lForceVectorY = 5000; - } - - // Read in the point of application vector from the form - let lPositionGroupX = lPositionGroup.find('.vec2_x_input').val(), - lPositionGroupY = lPositionGroup.find('.vec2_y_input').val(); - - if (lPositionGroupX.length === 0) { - lPositionGroupX = -Math.sqrt(2) / 2; - } - - if (lPositionGroupY.length === 0) { - lPositionGroupY = -Math.sqrt(2) / 2; - } - - const lForceVector = vec2(Number(lForceVectorX), Number(lForceVectorY)); - const lPointOfApplication = scaleVec2(normalize2(vec2(Number(lPositionGroupX), Number(lPositionGroupY))), lCircle.radius); - - applyForce(lForceVector, lPointOfApplication); - }); - }); - } - - lProgramContext.playButton.on('click', run); - $('#rigidbody_2_force_submit_button').submit(false); - } - - $(document).ready(main); -})()
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