Merge pull request #83 from wedesoft/main

Minor changes to OpenGL article

Author: timothypratley

site/opengl_visualization/main.qmd

@@ -178,7 +178,7 @@ Next we need to set up OpenGL rendering for this window.
 
 ::: {.printedClojure}
 ```clojure
-#object[org.lwjgl.opengl.GLCapabilities 0x30f1b3c2 "org.lwjgl.opengl.GLCapabilities@30f1b3c2"]
+#object[org.lwjgl.opengl.GLCapabilities 0x688b081a "org.lwjgl.opengl.GLCapabilities@688b081a"]
 
 ```
 :::
@@ -987,7 +987,8 @@ This shader program requires setup of several uniforms and a texture.
 ```clojure
 (do
   (GL20/glUseProgram program-moon)
-  (GL20/glUniform2f (GL20/glGetUniformLocation program-moon "iResolution") window-width window-height)
+  (GL20/glUniform2f (GL20/glGetUniformLocation program-moon "iResolution")
+                    window-width window-height)
   (GL20/glUniform1f (GL20/glGetUniformLocation program-moon "fov") (to-radians 25.0))
   (GL20/glUniform1f (GL20/glGetUniformLocation program-moon "alpha") (to-radians 30.0))
   (GL20/glUniform1f (GL20/glGetUniformLocation program-moon "beta") (to-radians -20.0))
@@ -1716,7 +1717,7 @@ We reuse the vertex shader from the previous section.
 
 The fragment shader this time is more involved.
 
-* A horizon matrix with normal, tangent, and bitangent vectors is computed/
+* A horizon matrix with normal, tangent, and bitangent vectors is computed.
 * The elevation is sampled in four directions from the current 3D point.
 * The elevation values are used to create two surface vectors.
 * The cross product of the surface vectors is computed and normalized to get the normal vector.
@@ -2021,8 +2022,10 @@ Note that in practise you will
 * use higher resolution data and map the data onto texture tiles
 * generate textures containing normal maps offline
 * create a multiresolution map
-* you use tessellation to increase the mesh resolution
-* you will use elevation data to deform the mesh
+* use tessellation to increase the mesh resolution
+* use elevation data to deform the mesh
+
+Thanks to [Timothy Pratley](https://timothypratley.blogspot.com/p/httpswww.html) for helping getting this post online.
 
 
 ```{=html}

src/opengl_visualization/main.clj

@@ -460,7 +460,8 @@ void main()
 ;; This shader program requires setup of several uniforms and a texture.
 (do
   (GL20/glUseProgram program-moon)
-  (GL20/glUniform2f (GL20/glGetUniformLocation program-moon "iResolution") window-width window-height)
+  (GL20/glUniform2f (GL20/glGetUniformLocation program-moon "iResolution")
+                    window-width window-height)
   (GL20/glUniform1f (GL20/glGetUniformLocation program-moon "fov") (to-radians 25.0))
   (GL20/glUniform1f (GL20/glGetUniformLocation program-moon "alpha") (to-radians 30.0))
   (GL20/glUniform1f (GL20/glGetUniformLocation program-moon "beta") (to-radians -20.0))
@@ -698,7 +699,7 @@ void main()
 ;;
 ;; The fragment shader this time is more involved.
 ;;
-;; * A horizon matrix with normal, tangent, and bitangent vectors is computed/
+;; * A horizon matrix with normal, tangent, and bitangent vectors is computed.
 ;; * The elevation is sampled in four directions from the current 3D point.
 ;; * The elevation values are used to create two surface vectors.
 ;; * The cross product of the surface vectors is computed and normalized to get the normal vector.
@@ -839,5 +840,7 @@ void main()
 ;; * use higher resolution data and map the data onto texture tiles
 ;; * generate textures containing normal maps offline
 ;; * create a multiresolution map
-;; * you use tessellation to increase the mesh resolution
-;; * you will use elevation data to deform the mesh
+;; * use tessellation to increase the mesh resolution
+;; * use elevation data to deform the mesh
+;;
+;; Thanks to [Timothy Pratley](https://timothypratley.blogspot.com/p/httpswww.html) for helping getting this post online.