05. Now we’ll rotate the 3D model and 3D camera. Under Scene, select ObjMesh – the lower submenu will change. We can rotate our 3D model from here, but there is an easier alternative. CS4’s Tools menu has two new sets of tools that deal strictly with CS4’s 3D capabilities: the 3D Rotate tools (K), which deal with the 3D model in space; and the 3D Orbit tools (N), which deal strictly with the 3D camera of the 3D layer. Next, we’ll use these tools to match the perspective of our 3D mesh with the perspective of the empty room.
06. Hit the icon in the lower righthand corner – this will toggle on the 3D grid. Use the 3D Orbit tool (N) and the alternate 3D camera tools to match our grid into the perspective of our empty room. Matching the perspective of an object to the scene is crucial in creating realism. Open PerspectiveGrid.psd on the cover CD and hold down Shift as you drag the image onto our canvas. Place the layer under the ‘SwirlAbstractObj’ layer. You should have a perfectly accurate perspective grid of the floor.
07. Using the 3D camera tools, match the 3D grid to our perspective grid so that all the lines match, as shown here. Use the 3D Orbit tool, 3D Pan View tool, 3D Roll View tool, and 3D Zoom tool. Now that we’re sure that our perspective matches our environment, play with the 3D model a bit. You could fit the model into the canvas a little better and rotate it using the 3D Rotate tool and 3D Roll tool. It’s crucial that you’re using the 3D Rotate tool and not the 3D Orbit tool (which is right beneath it), as the 3D Orbit tool will alter the perspective we just matched by rotating the camera.