diff options
| author | Aldrik Ramaekers <aldrik.ramaekers@protonmail.com> | 2020-01-30 21:11:12 +0100 |
|---|---|---|
| committer | Aldrik Ramaekers <aldrik.ramaekers@protonmail.com> | 2020-01-30 21:11:12 +0100 |
| commit | 260f05025631031b7cc4904805d5017feaf53eda (patch) | |
| tree | d5a723bb7bbbc9f8b598712723fe3d8290c0a54c /src/camera.c | |
initial commit
Diffstat (limited to 'src/camera.c')
| -rw-r--r-- | src/camera.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/camera.c b/src/camera.c new file mode 100644 index 0000000..5bde9f9 --- /dev/null +++ b/src/camera.c @@ -0,0 +1,22 @@ +/* +* BSD 2-Clause “Simplified” License +* Copyright (c) 2019, Aldrik Ramaekers, aldrik.ramaekers@protonmail.com +* All rights reserved. +*/ + +void camera_apply_transformations(platform_window *window, camera *camera) +{ + s32 x = (window->width/2)+(camera->x); + s32 y = (window->height/2)+(camera->y); + glTranslatef(x, y, 0.0f); + glRotatef(camera->rotation, 0.0f, 0.0f, 1.0f); + glTranslatef(-x, -y, 0.0f); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + + glOrtho(camera->x, window->width+camera->x, + window->height+camera->y, camera->y, -100, 100); + + glMatrixMode(GL_MODELVIEW); +}
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