Trigonometry Helicopter Physics

gistfile1.txt

updateVelocities(){
		// Convert Degrees to Radians
		const rollRads = this.roll < 0 ? this.getRadians( 150-this.roll ) : this.getRadians( 150+this.roll ) , // Hypothetically 90-this.roll, changed for better playability
			  pitchRads = this.pitch < 0 ? this.getRadians( 150-this.pitch ) : this.getRadians( 150+this.pitch ), // Hypothetically 90-this.pitch, changed for better playability
			  gravSimY = this.aY/this.weight,
			  yawRatio = this.yaw/this.maxYaw;

		// Rotational Velocity
		this.vR = this.aX * yawRatio;

		// Y Velocity from accel & gravity
		this.vY = this.aY <= this.gravAOffset ? gravSimY - this.gravVOffset : gravSimY;

		const vYOriginal = this.vY;
		
		// X & Z Velocity
		if ( this.roll != 0 && this.pitch != 0 ) {
			// Get Higher Degree of the two, use resultant Y Velocity for second equation
			if ( Math.abs(this.roll) > Math.abs(this.pitch) ) {
				// Calc Roll Vector with Trigonometry, 
				this.vX = Math.abs(vYOriginal * Math.cos(rollRads));
				this.vY = Math.abs(vYOriginal * Math.sin(rollRads));
				this.vZ = Math.abs(vYOriginal * Math.cos(pitchRads));
			} else if ( Math.abs(this.pitch) > Math.abs(this.roll) ) {
				// Calc Pitch Vector with Trigonometry
				this.vX = Math.abs(vYOriginal * Math.cos(rollRads));
				this.vY = Math.abs(vYOriginal * Math.sin(pitchRads));
				this.vZ = Math.abs(vYOriginal * Math.cos(pitchRads));
			}
		} else if ( this.roll != 0 ) {
			// Calc Roll Vector with Trigonometry
			this.vX = vYOriginal * Math.cos(rollRads);
			this.vY = vYOriginal * Math.sin(rollRads);
		} else if ( this.pitch != 0 ) {
			// Calc Pitch Vector with Trigonometry
			this.vY = vYOriginal * Math.sin(pitchRads);
			this.vZ = vYOriginal * Math.cos(pitchRads);
		}
	}