T2.3 Transform with GLM and connect to shader

Github code

Release tag_e_glm_rotation · zhaoyoubing/proj02GitHub

GLM

GLM is the standard library for generating transformation matrix.

It is composed totally of header files so we only need to download it and copy it to the include directory.

Identity matrix

glm::mat4 glm::mat4(1.0)

GLM APIs for translation, scale and rotation

The common GLM APIs for translation, scale and rotation are

glm::mat4 glm::translate(glm::vec3(tx, ty, tz));
glm::mat4 glm::rotate(glm::radians(angle_in_degree), glm::vec3(axis_x, axis_y, axis_z));
glm::mat4 glm::scale(glm::vec3(sx, sy, sz));