Method computeTransform

testbed/common/PhysicsObject.cpp:53–75

Compute the new transform matrix

// Compute the new transform matrix
openglframework::Matrix4 PhysicsObject::computeTransform(float interpolationFactor,
                                                        const openglframework::Matrix4& scalingMatrix) {

    // Get the transform of the rigid body
    rp3d::Transform transform = mBody->getTransform();

    // Interpolate the transform between the previous one and the new one
    rp3d::Transform interpolatedTransform = rp3d::Transform::interpolateTransforms(mPreviousTransform,
                                                                                  transform,
                                                                                  interpolationFactor);
    mPreviousTransform = transform;

    // Compute the transform used for rendering the box
    rp3d::decimal matrix[16];
    interpolatedTransform.getOpenGLMatrix(matrix);
    openglframework::Matrix4 newMatrix(matrix[0], matrix[4], matrix[8], matrix[12],
                                       matrix[1], matrix[5], matrix[9], matrix[13],
                                       matrix[2], matrix[6], matrix[10], matrix[14],
                                       matrix[3], matrix[7], matrix[11], matrix[15]);

    // Apply the scaling matrix to have the correct box dimensions
    return newMatrix * scalingMatrix;
}

// Reset the transform
void PhysicsObject::setTransform(const rp3d::Transform& transform) {