justin/loop
1
0
Fork 0
Code Issues Pull Requests 1 Packages Projects Releases Wiki Activity

Reorganise rendering in Dodge

Browse Source
This commit is contained in:
justin
2021-04-01 11:28:53 +02:00
parent e62ff391a5
commit 1e9a07d1c8
13 changed files with 217 additions and 113 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/Dodge/Render/PerspectiveMatrix.hs
+50
View File
@@ -0,0 +1,50 @@
module Dodge.Render.PerspectiveMatrix
where
import Dodge.Data
import Geometry
import Linear.Matrix
import Linear.V4
import Graphics.Rendering.OpenGL (GLfloat)
perspectiveMatrix :: World -> [GLfloat]
perspectiveMatrix w =
let rot = _cameraRot w
zoom = _cameraZoom w
(tranx,trany) = _cameraCenter w
(winx,winy) = (_windowX w,_windowY w)
(viewFromx,viewFromy) = _cameraViewFrom w
scalMat = Linear.Matrix.transpose $ V4
(V4 (2*zoom/winx) 0 0 (0::GLfloat))
(V4 0 (2*zoom/winy) 0 0)
(V4 0 0 0.5 0) --scaled to make walls shorter
(V4 0 0 0 1)
rotMat = Linear.Matrix.transpose $
V4 (V4 (cos rot) (sin (-rot)) 0 0)
(V4 (sin rot) (cos rot) 0 0)
(V4 0 0 1 0)
(V4 0 0 0 1)
tranMat3 = Linear.Matrix.transpose $
V4 (V4 1 0 0 0)
(V4 0 1 0 0)
(V4 0 0 1 0)
(V4 (-tranx) (-trany) 0 1)
tranMat2 = Linear.Matrix.transpose $
V4 (V4 1 0 0 0)
(V4 0 1 0 0)
(V4 0 0 1 0)
(V4 (viewFromx-tranx) (viewFromy-trany) 0 1)
perMat = Linear.Matrix.transpose $
V4 (V4 1 0 0 0)
(V4 0 1 0 0)
(V4 0 0 1 1)
(V4 0 0 0 1)
tranMat1 = Linear.Matrix.transpose $
V4 (V4 1 0 0 0)
(V4 0 1 0 0)
(V4 0 0 1 0)
(V4 (-viewFromx) (-viewFromy) 0 1)
wmat = scalMat !*! rotMat !*! tranMat2 !*! perMat !*! tranMat1
vToL (V4 a b c d) = [a,b,c,d]
in concatMap vToL $ vToL wmat