CanvasRenderer: Minor tweaks.

src/renderers/CanvasRenderer.js

@@ -618,7 +618,7 @@ THREE.CanvasRenderer = function ( parameters ) {
 
 			}
 
-			if ( material.wireframe === false && material.shading == THREE.SmoothShading && element.vertexNormalsLength == 3 ) {
+			if ( material.wireframe === false && material.shading === THREE.SmoothShading && element.vertexNormalsLength === 3 ) {
 
 				_color1.copy( _ambientLight );
 				_color2.copy( _ambientLight );
@@ -681,7 +681,7 @@ THREE.CanvasRenderer = function ( parameters ) {
 
 					patternPath( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, _uv1x, _uv1y, _uv2x, _uv2y, _uv3x, _uv3y, material.envMap );
 
-				}/* else if ( material.envMap.mapping == THREE.SphericalRefractionMapping ) {
+				}/* else if ( material.envMap.mapping === THREE.SphericalRefractionMapping ) {
 
 
 
@@ -722,7 +722,7 @@ THREE.CanvasRenderer = function ( parameters ) {
 
 			var normal;
 
-			if ( material.shading == THREE.FlatShading ) {
+			if ( material.shading === THREE.FlatShading ) {
 
 				normal = element.normalModelView;
 
@@ -732,7 +732,7 @@ THREE.CanvasRenderer = function ( parameters ) {
 					? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )
 					: fillPath( _color );
 
-			} else if ( material.shading == THREE.SmoothShading ) {
+			} else if ( material.shading === THREE.SmoothShading ) {
 
 				normal = element.vertexNormalsModelView[ uv1 ];
 				_color1.setRGB( normal.x, normal.y, normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );
@@ -789,12 +789,12 @@ THREE.CanvasRenderer = function ( parameters ) {
 
 	function patternPath( x0, y0, x1, y1, x2, y2, u0, v0, u1, v1, u2, v2, texture ) {
 
-		if ( texture instanceof THREE.DataTexture || texture.image === undefined || texture.image.width == 0 ) return;
+		if ( texture instanceof THREE.DataTexture || texture.image === undefined || texture.image.width === 0 ) return;
 
 		if ( texture.needsUpdate === true ) {
 
-			var repeatX = texture.wrapS == THREE.RepeatWrapping;
-			var repeatY = texture.wrapT == THREE.RepeatWrapping;
+			var repeatX = texture.wrapS === THREE.RepeatWrapping;
+			var repeatY = texture.wrapT === THREE.RepeatWrapping;
 
 			_patterns[ texture.id ] = _context.createPattern(
 				texture.image, repeatX === true && repeatY === true