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mrdoob · Jun 18, 2017 · c234176 · c234176
1 parent 696008b
commit c234176
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Showing 3 changed files with 32 additions and 12 deletions.
diff --git a/build/three.js b/build/three.js
@@ -3651,9 +3651,19 @@
 
 				if ( x.lengthSq() === 0 ) {
 
-					// eye and target are in the same vertical
+					// up and z are parallel
 
-					z.z += 0.0001;
+					if ( Math.abs( up.z ) === 1 ) {
+
+						z.x += 0.0001;
+
+					} else {
+
+						z.z += 0.0001;
+
+					}
+
+					z.normalize();
 					x.crossVectors( up, z );
 
 				}
@@ -18304,7 +18314,7 @@
 					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
 					if ( texture.type !== UnsignedInt248Type ) {
 
-					        console.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );
+						console.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );
 
 						texture.type = UnsignedInt248Type;
 						glType = paramThreeToGL( texture.type );

diff --git a/build/three.min.js b/build/three.min.js
diff --git a/build/three.module.js b/build/three.module.js
@@ -3645,9 +3645,19 @@ Object.assign( Matrix4.prototype, {
 
 			if ( x.lengthSq() === 0 ) {
 
-				// eye and target are in the same vertical
+				// up and z are parallel
 
-				z.z += 0.0001;
+				if ( Math.abs( up.z ) === 1 ) {
+
+					z.x += 0.0001;
+
+				} else {
+
+					z.z += 0.0001;
+
+				}
+
+				z.normalize();
 				x.crossVectors( up, z );
 
 			}
@@ -18298,7 +18308,7 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, paramT
 				// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
 				if ( texture.type !== UnsignedInt248Type ) {
 
-				        console.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );
+					console.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );
 
 					texture.type = UnsignedInt248Type;
 					glType = paramThreeToGL( texture.type );