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js/RoyHall_TheGallery.js

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+// scene/demo-specific variables go here
+let cube, platform;
+
+
+// called automatically from within initTHREEjs() function (located in InitCommon.js file)
+function initSceneData() 
+{
+	demoFragmentShaderFileName = 'RoyHallTheGallery_Fragment.glsl';
+
+	// scene/demo-specific three.js objects setup goes here
+	sceneIsDynamic = false;
+
+	// pixelRatio is resolution - range: 0.5(half resolution) to 1.0(full resolution)
+	pixelRatio = mouseControl ? 0.75 : 0.75; // less demanding on battery-powered mobile devices
+
+	//EPS_intersect = 0.01;
+
+
+	// set camera's field of view and other options
+	worldCamera.fov = 37;
+	focusDistance = 36.0;
+	//apertureChangeSpeed = 1; // 1 is default
+	//focusChangeSpeed = 1; // 1 is default
+
+	cameraFlightSpeed = 15;
+
+	// position and orient camera
+	cameraControlsObject.position.set(10.6, 11.1, 28.9);
+	// look left or right
+	cameraControlsYawObject.rotation.y = 0.2;
+	// look up or down
+	cameraControlsPitchObject.rotation.x = 0;
+
+
+	// CUBE sculpture in middle of room
+	cube = new RayTracingShape("box");
+	cube.transform.scale.set(3.2, 3.2, 3.2);
+	cube.transform.position.set(-2, 6.75, -8);
+	cube.transform.rotation.set(Math.PI * 0.73, Math.PI * 0.74, 0);
+	// after specifying any desired transforms (scale, position, rotation), we must call updateMatrixWorld() to actually fill in the shape's matrix with these new values
+	cube.transform.updateMatrixWorld(true); // 'true' forces a matrix update now, rather than waiting for Three.js' 'renderer.render()' call which happens last
+
+	// platform box underneath the cube sculpture
+	platform = new RayTracingShape("box");
+	platform.transform.scale.set(2.75, 1.25, 2.75);
+	platform.transform.position.set(-2, 0, -8);
+	// after specifying any desired transforms (scale, position, rotation), we must call updateMatrixWorld() to actually fill in the shape's matrix with these new values
+	platform.transform.updateMatrixWorld(true); // 'true' forces a matrix update now, rather than waiting for Three.js' 'renderer.render()' call which happens last
+
+
+
+	// In addition to the default GUI on all demos, add any special GUI elements that this particular demo requires
+
+
+	// scene/demo-specific uniforms go here     
+	rayTracingUniforms.uCubeInvMatrix = { value: new THREE.Matrix4() };
+	rayTracingUniforms.uPlatformInvMatrix = { value: new THREE.Matrix4() };
+
+	// go ahead and calculate/set the inverse matrices, because this scene is static -  these objects don't move
+	rayTracingUniforms.uCubeInvMatrix.value.copy(cube.transform.matrixWorld).invert();
+	rayTracingUniforms.uPlatformInvMatrix.value.copy(platform.transform.matrixWorld).invert();
+
+} // end function initSceneData()
+
+
+
+// called automatically from within the animate() function (located in InitCommon.js file)
+function updateVariablesAndUniforms() 
+{   
+
+	// INFO
+	cameraInfoElement.innerHTML = "FOV: " + worldCamera.fov + " / Aperture: " + apertureSize.toFixed(2) + 
+		" / FocusDistance: " + focusDistance.toFixed(2) + "<br>" + "Samples: " + sampleCounter;
+
+} // end function updateVariablesAndUniforms()
+
+
+init(); // init app and start animating