Chapter 41

Rendering Methods for Perspective Drawings

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Links for Chapter 41

Presenting Depth

Shadows

Reflections

Related Web Sites

Texture

Entourage

2-Point Perspective

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Presenting Depth

• Use offsetting lines and different line weights around doors, windows, and cabinet faces

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Shadows

• Shadows are cast when light is blocked from striking another surface

• Establish a light source so major features will not be hidden

• Project at 30°, 45°, and 60°• Use a triangle to establish and maintain

angles

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Shadows

• Factors affecting layout of shadows– A vertical surface casts a shadow on the

adjacent horizontal surface in the direction in which the light rays are traveling

– A shadow on a plane, caused by a line parallel to the plane, forms a shadow line parallel to the line

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Shadows

V.P.LIGHT RAYSAT ANY ANGLE

SHADE

SHADOW

SHADOW WILL CONVERGE ON V.P.

SHADOW PARALLEL TO P.P.

V.P.

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Shadows• Projecting shadows onto an angled surface

V.P.

STEP 1.PROJECT RIDGE POINT TOCONSTRUCTION LINE A

PARALLELTO P.P.

PARALLEL TO P.P.

STEP 2.PROJECT LINE B THROUGHPOINT 1 TO THE V.P.

LIGHT ANGLE

STEP 3.PROJECT UP FROM POINT 2 TO RIDGE

B

PT. 2

LINE A

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Reflections

• Reflections are caused by water or glass

• Point to be projection will fall directly below that point and the depth will be equal to the distance that the point is above the water

• Large glass areas look dull unless rendered

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Texture

• Draw roofing materials first with construction lines, then each shingle is drawn, and finally line quality is varied to show roughness

• Siding or paneling is drawn so all lines merge at a vanishing point– Vertical and horizontal lines of varying

thickness is used

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Entourage

• Entourage is the surroundings of a building

• It should not compete with the actual structure

• Keep entourage in proportion to the structure

• Plants are drawn freehand, traced, or applied with rub-ons

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Entourage

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Entourage

• People are either drawn in detail or outlined– Project people’s height to the vanishing points– Make sure people are in different poses

• Furniture helps provide a reference for scale and create a sense of realism

• Keep cars plain so they blend with the surroundings and do not detract from it

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Entourage

• Content includes all the aspects of entourage

• Follow these guidelines– Use only necessary entourage to show

location, scale, and usage of the structure

– Use only enough detail to illustrate desired material

– Never obscure structure with entourage

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Two-Point Perspective Rendering

• Do several sketches to practice and determine the layout

• Trace perspective onto vellum

• Lay out foreground for entourage

• Lay out areas to be shaded

• Draw trees in foreground

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Two-Point Perspective Rendering

• Draw people and cars, except on residential drawings

• Draw entourage to help tie the structure to the ground

• Render the foreground first then work to the background

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Two-Point Perspective Rendering

• Draw major areas of shades and shadows

• Highlight areas in materials that cast shadows

• Letter the job title or owner’s name

• Use the same procedure for a one-point perspective drawing

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Related Web Sites

• Lightscape Technologies - www.lightscape.com

• People for People - www.peopleforpeople.com

• Visual Applications - www.visapp.com