MEASURED PERSPECTIVE

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MEASURED PERSPECTIVE
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Measured Perspective

• The given views show the Elevation and End
  Elevation of a house.
• Draw a measured perspective of the house from
  the given spectator point

Eye Level
Ground Level
Picture Plane
Spectator Point
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Finding Vanishing Points

• Start by finding the two vanishing points.
• Extend the eye level, ground and picture plane
  lines across the drawing.

Vanishing Point 1
Vanishing Point 2
EL
GL
Draw a line from the spectator point until it
reaches the picture plane at each side of the
drawing. These lines should be drawn parallel to
the sides of the house.
PP
Draw a vertical line through these points.
Indicate the points where these lines cross the
eye level line these are the vanishing points
required.
SP
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Finding Height Lines
Height Line 1
Height Line 2

• Using the edges of the building, project lines
  up to the picture plane, and then vertically to
  find a height line at each side of the drawing.

VP2
VP1
EL
GL
PP
SP
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Projecting Heights

• Add the heights of the building onto each of the
  height lines.
• This is best done in stages so that the drawing
  is easier to read.
• Start with the building and later the heights
  for the windows and doors can be added.

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Drawing House Gable
Taking one wall at a time, project lines from
the spectator point through the corners of the
wall to the picture plane.

• Where the picture plane and the projected lines
  cross draw vertical lines.
• These lines will guide you for the position of
  the wall and for the ground line and roof height
  on the house.

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Drawing House Gable (2)

• To find the outline of the wall, lines need to
  be projected from the vanishing point through the
  correct height points until they cross the
  vertical lines just drawn.

As these drawings can become quite complicated
it is wise to darken the edges as you find them,
although take care that all the edges being
darkened are visible at the end.
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Drawing Front Wall

• To draw the front wall of the house the same
  process is carried out.
• Not all of the lines for this wall will be
  darkened at this stage as the porch in front of
  the house still has to be added and this will
  hide some of the lines.

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Drawing Roof

• To draw the roof of the house the same process
  is carried out.

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Porch Gable - Method 1

• There are two different ways to construct the
  gable of the porch.
• (The projection lines used to construct
  the house have been deleted for clarity.)
• Find the vertical lines for the porch. This is
  done in the same way as the lines for the main
  house.

Find the height of the roof where it meets the
house wall. This requires the projection line
from VP1 to change direction when it meets the
front corner of the house and project towards VP2
.
Find the distance that the porch projects
forward from the house
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Porch Gable Method 1

• To draw the front of the porch it is necessary
  for the height of the roof at the front to be
  found.
• Project from VP1 through the height point and
  draw across the gable.
• When any corner of the building is reached the
  projected line changes to the other VP.
• This means that the projected line will change
  direction at the house front corner and the
  corner where the porch and house meet.

Darken the edges to complete the gable of the
porch.
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Porch Gable - Method 2
The second method requires a new height line to
be constructed, using the gable edge on the plan
to find its position.
HL1
HL3
HL 2
VP2
VP1
EL
In this version the height of the gable points
can now be found by projecting directly from VP1
onto the vertical lines for the corners.
GL
PP
When the gable has been constructed, darken in
the required edges.
SP
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Porch Roof
The remainder of the porch roof can now be
completed. Firstly draw the vertical lines for
each of the corners

• Now project the lines from the gable to VP2 to
  find the shape of the roof structure.

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Completing Porch
The porch can now be completed by adding the
final lines for the front surface. The porch
can be darkened in and the remaining visible
ground lines of the main building can be added to
complete the main outline of the building.
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Windows and Doors
The doors and windows are positioned following
the same procedures. (The existing construction
lines have again been removed for
clarity) Firstly, you will need to mark the
positions of each window and door on to the plan
view and the required heights onto the height
line if this has not already been done.
Project lines through each of the plan points up
to the PP and then project vertical lines through
each.
Project from VP1 through the height points onto
the gable of the building.
Locate the position and shape of each door or
window and darken the outlines.
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Windows and Doors
The windows and doors on the front of the
building are found in the same way.
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Windows and Doors
To complete the drawing the window and door on
the porch are added.
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The Completed Drawing
This final slide shows what the completed house
should look like.
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MEASURED PERSPECTIVEfinished