With precise documentation about translating the glFW/OpenGL description
of sampler objects to the Vulkan description that we want.

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

[#72] Changed GUIWindow back to GUI class, removed some ImGui overhead and added a shortcut to swapchain images

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

deleted load_mesh function
added documentation

Also added some test files

improved computeModelMatrix

correction in matrix conversion

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

[#42] Simplified update methods, replaced clones to references, added namespace, corrected applications

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

Before:
If more than one trackball camera controller is added to your application, changing the m_radius variable via scroll event would lead to adjusting the radius for all cameras attached to the trackball camera controller.

After:
Before updating the radius, the m_radius variable is changed in respect to the current distance from the camera to its center point. This enables handling all cameras with attached trackball camera controller separately.

Per default: index = 0 is the active camera. The user should determine himself via setActiveCamera which camera should be active