CorelDRAW X7: The Official Guide, 11th Edition

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Transparencies and Shadows

In our endeavors to make drawings more complete–to give the audience as detailed an illustration as possible–we rely on not just the silhouette of an object and its fill and texture, but also how an object interacts with its surroundings. There’s more than meets the eye when it comes to replicating a scene or even a simple object. Wherever you have a light source, a solid object on a solid surface casts a shadow in the opposing direction. Even partially transparent objects leave their mark on a surface when illuminated from a direction. Similarly, what would our world be like if everything was 100 percent opaque? Sunglasses would be an impossibility, a room with a view would be false advertising, and even ice cubes ...