adds settable aperture

Author: diroru

data/cubeMapQuadFrag.glsl

@@ -4,6 +4,7 @@ precision highp float;
 precision highp int;
 
 uniform samplerCube cubemap;
+uniform float aperture;
 
 varying vec2 vertTexCoord;
 
@@ -29,7 +30,7 @@ vec3 domeXYToXYZ(vec2 xy, float aperture) {
 }
 
 void main() {
-  vec3 ray = domeXYToXYZ(vertTexCoord, 1.0*PI);
+  vec3 ray = domeXYToXYZ(vertTexCoord, aperture*PI);
   //vec3 rgb = ray * 0.5 + vec3(0.5); //DEBUG
   vec3 color = vec3(textureCube(cubemap, ray));
   gl_FragColor = vec4(color, 1.0);

src/codeanticode/planetarium/Dome.java

@@ -69,6 +69,7 @@ public class Dome extends PGraphics3D {
   protected float domeLeft, domeRight, domeTop, domeBottom;
   protected float domeDX, domeDY, domeDZ;
   protected float domeScale = 1;  
+  protected float domeAperture = 1f;
 
   protected Method borderMethod;
   protected Method screenMethod; 
@@ -320,6 +321,7 @@ private void initDomeQuad() {
 	      cubeMapQuadShader = parent.loadShader("cubeMapQuadFrag.glsl", 
 	                                        "cubeMapQuadVert.glsl"); 
 	      cubeMapQuadShader.set("cubemap", 1);
+	      setDomeAperture(1f);
 	    }
 
 
@@ -455,6 +457,18 @@ private static int nextPowerOfTwo(int val) {
     return ret;
   }
 
+  //the aperture value is normalized on PI
+  protected void setDomeAperture(float theAperture) {
+    if(cubeMapQuadShader != null) {
+	    	try {
+	    		cubeMapQuadShader.set("aperture", theAperture);
+	    		domeAperture = theAperture;
+	    	} catch(Exception e) {
+	    		e.printStackTrace();
+	    	}    		
+    }
+  }
+  
 
   private void welcome() {
     System.out.println("##library.name## ##library.prettyVersion## by ##author##");

src/codeanticode/planetarium/DomeCamera.java

@@ -52,6 +52,10 @@ public void setMode(int mode) {
     */
   }
 
+  public void setDomeAperture(float theAperture) {
+	  renderer.setDomeAperture(theAperture);
+  }
+  
   public int getFace() {
     return renderer.getCurrentFace() - PGL.TEXTURE_CUBE_MAP_POSITIVE_X;
   }