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The camera now looks at the mouse pointer

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CobaltXII
2018-12-28 21:26:41 -05:00
parent 895842eee9
commit c5bf706e68
1 changed files with 9 additions and 1 deletions
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10
src/main.cpp
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@@ -405,11 +405,19 @@ int main(int argc, char** argv)
glm::mat4 matrix_projection = glm::perspective(glm::radians(45.0f), aspect_ratio, 0.128f, 256.0f);
// Calculate the looking direction of the camera.
float rot_x_deg = (float(sdl_mouse_y) - (float(sdl_y_res) / 2.0f)) / float(sdl_y_res) * 180.0f;
float rot_y_deg = (float(sdl_mouse_x) - (float(sdl_x_res) / 2.0f)) / float(sdl_x_res) * 360.0f;
// Generate the view matrix.
glm::mat4 matrix_view = glm::mat4(1.0f);
matrix_view = glm::translate(matrix_view, glm::vec3(0.0f, 0.0f, -5.0f));
matrix_view = glm::rotate(matrix_view, glm::radians(rot_x_deg), glm::vec3(1.0f, 0.0f, 0.0f));
matrix_view = glm::rotate(matrix_view, glm::radians(rot_y_deg), glm::vec3(0.0f, 1.0f, 0.0f));
// Generate the model matrix.
matrix_view = glm::rotate(matrix_view, glm::radians(sin(SDL_GetTicks() / 500.0f) * 50.0f), glm::vec3(1.0f, 0.0f, 0.0f));
matrix_view = glm::rotate(matrix_view, glm::radians(cos(SDL_GetTicks() / 500.0f) * 50.0f), glm::vec3(0.0f, 1.0f, 0.0f));