Method setSize

src/main/java/net/minecraft/entity/Entity.java:356–370

Sets the width and height of the entity. Args: width, height

(float width, float height)

     * Sets the width and height of the entity. Args: width, height
     */
    protected void setSize(float width, float height)
    {
        if (width != this.width || height != this.height)
        {
            float f = this.width;
            this.width = width;
            this.height = height;
            this.setEntityBoundingBox(new AxisAlignedBB(this.getEntityBoundingBox().minX, this.getEntityBoundingBox().minY, this.getEntityBoundingBox().minZ, this.getEntityBoundingBox().minX + (double)this.width, this.getEntityBoundingBox().minY + (double)this.height, this.getEntityBoundingBox().minZ + (double)this.width));

            if (this.width > f && !this.firstUpdate && !this.worldObj.isRemote)
            {
                this.moveEntity(f - this.width, 0.0D, f - this.width);
            }
        }
    }

    /**
     * Sets the rotation of the entity. Args: yaw, pitch (both in degrees)