The btTransform class in C++ is a library provided by Bullet Physics which allows performing transformations such as translation, rotation, and scaling on objects in a 3D environment. It is used for simulating physics in video games and virtual environments.

**Example 1:** Applying rotation to an object

In this example, a btTransform object is created and its identity matrix is set. Then, a rotation is applied to it using the btQuaternion class, specifying the axis and angle of rotation.

**Example 2:** Transforming a vector

btTransform transform; transform.setIdentity(); transform.setRotation(btQuaternion(btVector3(0.0, 1.0, 0.0), 0.5)); // rotates 0.5 radians around the y-axis

In this example, a btTransform object is created and its identity matrix is set. Then, a rotation is applied to it using the btQuaternion class, specifying the axis and angle of rotation.

btTransform transform; transform.setIdentity(); transform.setOrigin(btVector3(1.0, 2.0, 3.0)); // translates the origin by (1, 2, 3) btVector3 vector(1.0, 0.0, 0.0); btVector3 transformed = transform(vector);This example shows how to apply a translation to a btTransform object using the setOrigin method. Then, a vector (1, 0, 0) is transformed using the transform method of the btTransform object, which applies the translation and any other specified transformation to the vector. Package library: Bullet Physics (often referred to as just "Bullet") is an open-source physics engine and graphical middleware library.

Frequently Used Methods

Frequently Used Methods

Related

Related in langs