From a434119e65146fe53d612c28e1ee7af532d1b70a Mon Sep 17 00:00:00 2001
From: Normand Briere <nbriere@noware.ca>
Date: Sun, 28 Jul 2019 15:25:44 -0400
Subject: [PATCH] Skyboxes

---
 CameraPane.java |  143 ++++++++++++++++++++++++++++++++++-------------
 1 files changed, 103 insertions(+), 40 deletions(-)

diff --git a/CameraPane.java b/CameraPane.java
index fdb5f77..bd26db2 100644
--- a/CameraPane.java
+++ b/CameraPane.java
@@ -187,6 +187,18 @@
     }
     
     private File defaultDirectory = javax.swing.filechooser.FileSystemView.getFileSystemView().getDefaultDirectory();
+
+    public void LoadSkybox(String name, String ext, boolean mipmap) throws GLException
+    {
+        try
+        {
+            cubemap = LoadCubemap(getClass().getClassLoader(), name, ext, mipmap);
+        } catch (IOException e)
+        {
+            System.out.println("NAME = " + name);
+            e.printStackTrace(); // throw new RuntimeException(e);
+        }
+    }
     
     void SetAsGLRenderer(boolean b)
     {
@@ -1485,6 +1497,8 @@
         gl.glVertex3f((float) pv.x, (float) pv.y, (float) pv.z);
     }
     
+    float[] colorV = new float[4];
+        
     void SetColor(Object3D obj, Vertex p0)
     {
         CameraPane display = this;
@@ -1552,8 +1566,6 @@
         {
             return;
         }
-        
-        float[] colorV = new float[3];
         
         if (false) // marked)
         {
@@ -8932,7 +8944,7 @@
 
         if (cubemap == null)
         {
-            LoadEnvy(5);
+            //LoadEnvy(1);
         }
 
         //cubemap.enable();
@@ -9219,37 +9231,58 @@
                 cubemap = null;
                 return;
             case 1:
-                name = "cubemaps/box_";
-                ext = "png";
+                name = "cubemaps/rgb/";
+                ext = "jpg";
                 reverseUP = false;
                 break;
             case 2:
-                name = "cubemaps/uffizi_";
-                ext = "png";
-                break; // reverseUP = true; break;
+                name = "cubemaps/uffizi/";
+                ext = "jpg";
+                reverseUP = false;
+                break;
             case 3:
-                name = "cubemaps/CloudyHills_";
-                ext = "tga";
+                name = "cubemaps/CloudyHills/";
+                ext = "jpg";
                 reverseUP = false;
                 break;
             case 4:
-                name = "cubemaps/cornell_";
+                name = "cubemaps/cornell/";
                 ext = "png";
                 reverseUP = false;
                 break;
+            case 5:
+                name = "cubemaps/skycube/";
+                ext = "jpg";
+                reverseUP = false;
+                break;
+            case 6:
+                name = "cubemaps/SaintLazarusChurch3/";
+                ext = "jpg";
+                reverseUP = false;
+                break;
+            case 7:
+                name = "cubemaps/Sodermalmsallen/";
+                ext = "jpg";
+                reverseUP = false;
+                break;
+            case 8:
+                name = "cubemaps/Sodermalmsallen2/";
+                ext = "jpg";
+                reverseUP = false;
+                break;
+            case 9:
+                name = "cubemaps/UnionSquare/";
+                ext = "jpg";
+                reverseUP = false;
+                break;
             default:
-                name = "cubemaps/rgb_";
-                ext = "png"; /*mipmap = true;*/ reverseUP = false;
+                name = "cubemaps/box/";
+                ext = "png"; /*mipmap = true;*/
+                reverseUP = false;
                 break;
         }
-
-        try
-        {
-            cubemap = LoadCubemap(getClass().getClassLoader(), name, ext, mipmap);
-        } catch (IOException e)
-        {
-            throw new RuntimeException(e);
-        }
+        
+        LoadSkybox(name, ext, mipmap);
     }
 
     public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height)
@@ -9281,8 +9314,13 @@
     static double[] model = new double[16];
     double[] camera2light = new double[16];
     double[] light2camera = new double[16];
-    int newenvy = -1;
+    
+    //int newenvy = -1;
     boolean envyoff = true; // false;
+    String skyboxname = "";
+    String skyboxext;
+    String loadedskyboxname = "";
+    
     cVector light0 = new cVector(0, 0, 0); // 1,3,2);
     //float[] light0 = { 0,0,0 };
     cVector dirlight = new cVector(0, 0, 1); // 1,3,2);
@@ -9762,10 +9800,12 @@
                 rati = 1 / rati;
                 gl.glOrtho(-skyscale / rati, skyscale / rati, -skyscale, skyscale, 0.001, 1000);
             }
-            assert (newenvy == -1);
+            
+            //assert (newenvy == -1);
+            
             gl.glDisable(GL.GL_FRAGMENT_PROGRAM_ARB);
             gl.glDisable(GL.GL_VERTEX_PROGRAM_ARB);
-            DrawSkyBox(gl);
+            DrawSkyBox(gl, (float)rati);
             gl.glEnable(GL.GL_FRAGMENT_PROGRAM_ARB);
             gl.glEnable(GL.GL_VERTEX_PROGRAM_ARB);
             accPerspective(gl, renderCamera.shaper_fovy / ratio,
@@ -11018,13 +11058,19 @@
             gl.glOrtho(-skyscale / ratio, skyscale / ratio, -skyscale, skyscale, 0.001, 1000);
         }
 
-        if (newenvy > -1)
+//        if (newenvy > -1)
+//        {
+//            LoadEnvy(newenvy);
+//        }
+//
+//        newenvy = -1;
+        
+        if (!skyboxname.equals(this.loadedskyboxname))
         {
-            LoadEnvy(newenvy);
+            LoadSkybox(skyboxname + "/", skyboxext, false);
+            loadedskyboxname = skyboxname;
         }
-
-        newenvy = -1;
-
+        
         ratio = ((double) getWidth()) / getHeight();
         //System.out.println("ratio = " + ratio);
 
@@ -11040,7 +11086,7 @@
 
             if (!IsFrozen() && !ambientOcclusion)
             {
-                DrawSkyBox(gl);
+                DrawSkyBox(gl, (float)ratio);
             }
 
             //if (selection_view == -1)
@@ -12400,7 +12446,7 @@
 
         //gl.glProgramEnvParameter4fvARB(GL.GL_FRAGMENT_PROGRAM_ARB, 127, lightParams, 0);
 
-        String program =
+        String program0 =
                 // Min shader
                 "!!ARBfp1.0\n" +
                 "PARAM zero123      = { 0.0, 1.0, 2, 1.25 };" +
@@ -12451,7 +12497,8 @@
                 //"SUB ndotl.y, zero123.y, ndotl.y;" +
                 //"MUL ndotl.y, ndotl.y, pow2.z;" +
                 
-                "MAX ndotl.x, ndotl.x, ndotl.y;" + // Ambient
+                //"MAX ndotl.x, ndotl.x, ndotl.y;" + // Ambient
+                //"MAX ndotl.x, ndotl.x, pow2.y;" + // Ambient
                 
                 // Pigment
                 "TEX temp, fragment.texcoord[0], texture[0], 2D;" +
@@ -12466,7 +12513,7 @@
                 "MOV result.color, temp;" +
                 "END";
         
-        String program2 =
+        String program =
                 "!!ARBfp1.0\n" +
                 
                 //"OPTION ARB_fragment_program_shadow;" +
@@ -15321,14 +15368,18 @@
             case '3':
             case '4':
             case '5':
-                newenvy = Character.getNumericValue(key);
-                repaint();
-                break;
             case '6':
             case '7':
             case '8':
             case '9':
-                BGcolor = (key - '6')/3.f;
+                if (envyoff)
+                {
+                    BGcolor = (key - '1')/8.f;
+                }
+                else
+                {
+                    //newenvy = Character.getNumericValue(key);
+                }
                 repaint();
                 break;
             case '!':
@@ -16551,7 +16602,9 @@
 
     float BGcolor = 0.5f;
     
-    private void DrawSkyBox(GL gl)
+    float ambientLight[] = {1f, 1f, 1f, 1.0f};
+    
+    private void DrawSkyBox(GL gl, float ratio)
     {
         if (envyoff || cubemap == null)
         {
@@ -16568,7 +16621,17 @@
         // Compensates for ExaminerViewer's modification of modelview matrix
         gl.glMatrixMode(GL.GL_MODELVIEW);
         gl.glLoadIdentity();
+        gl.glScalef(1,ratio,1);
 
+        colorV[0] = 2;
+        colorV[1] = 2;
+        colorV[2] = 2;
+        colorV[3] = 1;
+        gl.glDisable(gl.GL_COLOR_MATERIAL);
+        gl.glMaterialfv(gl.GL_FRONT_AND_BACK, gl.GL_AMBIENT, colorV, 0);
+        
+        gl.glLightModelfv(gl.GL_LIGHT_MODEL_AMBIENT, ambientLight, 0);
+        
         //gl.glActiveTexture(GL.GL_TEXTURE1);
         //gl.glDisable(GL.GL_TEXTURE_CUBE_MAP);
 
@@ -16581,7 +16644,7 @@
         // GL_NORMAL_MAP texgen mode. Temporarily enabling lighting
         // causes the normals to be sent down. Thanks to Ken Dyke.
         //gl.glEnable(GL.GL_LIGHTING);
-        gl.glDisable(GL.GL_LIGHTING);
+        gl.glEnable(GL.GL_LIGHTING);
 
         gl.glTexGeni(GL.GL_S, GL.GL_TEXTURE_GEN_MODE, GL.GL_NORMAL_MAP);
         gl.glTexGeni(GL.GL_T, GL.GL_TEXTURE_GEN_MODE, GL.GL_NORMAL_MAP);
@@ -16858,7 +16921,7 @@
             //new Exception().printStackTrace();
             System.out.println("select buffer init");
             // Use debug pipeline
-            drawable.setGL(new DebugGL(drawable.getGL()));
+            //drawable.setGL(new DebugGL(drawable.getGL()));
 
             GL gl = drawable.getGL();
 

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