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/* CFDG Lesson */
startshape TOC
shape TOC
{
CHAPTER5 [ x 0 y 0 ]
CHAPTER6 [ x 10 y 0 ]
CHAPTER7 [ x 0 y -10 ]
CHAPTER8 [ x 10 y -10 ]
TITLES [ ]
}
shape CHAPTER5
{
## SKEW TRANSFORM ##
SierpinskiTri [ x 2 y 4 size 6.0 ]
SQUARE [ x 0.5 y 5.5 skew 15 15 size 2 ]
// a skew transform (also called
// a shear) pushes a shape parallel
// to the x axis or y axis or both.
// The two numbers following
}
shape SierpinskiTri
{
polygonRightTriangle [ ]
hole [ b 1 ]
}
shape hole
{
polygonRightTriangle [ size -0.495 x 0.25 y -0.25 ]
hole [ b -0.2 size 0.5 x -0.25 y -0.25 ]
hole [ b -0.2 size 0.5 x 0.25 y -0.25 ]
hole [ b -0.2 size 0.5 x 0.25 y 0.25 ]
}
shape polygonRightTriangle
{
TRIANGLE [[ size 1 1.155 x 0.165 y -0.144 skew 30 0 ]]
}
shape CHAPTER6
{
## FLIP TRANSFORM ##
HEART [ x 2 y 1 size 0.12 0.1]
// A flip transform reflects a
// shape across a line at the
// specified angle.
}
import i_curves.cfdg
shape HEART
{
curveright_0_99_1 [ r 64 ]
curveright_0_99_1 [ flip 90 r -64 ]
HEART [ s 0.9 y 2.5 ]
}
shape CHAPTER7
{
## TRANSFORM ORDERING ##
TranSquare [ s 0.5 x 1 y 5 ]
TranCircle [ s 0.5 x 1 y 3 ]
TranTriangle [ s 0.5 x -1 y 1 ]
SquareLine [ x -1 y 7 ]
// When transforms are in curly
// braces then they are applied
// in a fixed order:
// 1) Translate
// 2) Rotate
// 3) Scale
// 4) Skew
// 5) Reflect
// Only one transform of each
// type is allowed (all but the
// last are ignored).
// When transforms are in square
// braces then they are applied
// in the order they are found
// and there can be multiple
// occurrences of a given type
// of transform.
}
shape TranSquare
{
SQUARE [[ r 45 x 4 s 3 ]]
SQUARE [[ b 0.2 x 4 s 3 ]]
SQUARE [[ b 0.4 x 4 ]]
SQUARE [[ b 0.7 ]]
// Ordering a rotate before a
// translate (x or y) causes the
// translate to be rotated. This
// saves
}
shape TranCircle
{
Ellipse [[ x 4 r 45 s 3 ]]
Ellipse [[ b 0.2 r 45 s 3 ]]
Ellipse [[ b 0.4 s 3 ]]
Ellipse [[ b 0.7 ]]
// This happens to be the order
// that CF uses when the transforms
// are enclosed in curly braces.
}
shape TranTriangle
{
TRIANGLE [[ s 3 x 4 r 45 ]]
TRIANGLE [[ b 0.2 x 4 r 45 ]]
TRIANGLE [[ b 0.4 r 45 ]]
TRIANGLE [[ b 0.7 ]]
// Putting the scale before the
// translate scales the translate
// as well
}
shape SquareLine
{
SQUARE []
SquareLine [[ y -0.5 s 0.75 y -0.5 ]]
// Transforms can be specified
// more than once and subsequent
// transforms are modified by the
// ones before them. In the above
// idiom the squares are always
// just touching, even when you
// change the scale amount.
}
shape Ellipse
{
CIRCLE [ s 1 0.5 ]
}
shape CHAPTER8
{
## COLOR ##
// Coming soon.
}
## Utilities ##
import i_pix.cfdg
// The "include" statement reads
// in all the rules from another file.
// Any "startshape" in the included
// file is ignored.
shape TITLES
{
TITLE5 [ x 0 y 8.5 ]
TITLE6 [ x 10 y 8.5 ]
TITLE7 [ x 0 y -1.5 ]
TITLE8 [ x 10 y -1.5 ]
}
shape TITLE5
{
F_5by5 [ x 0 ]
I_5by5 [ x 1.2 ]
V_5by5 [ x 2.4 ]
E_5by5 [ x 3.6 ]
}
shape TITLE6
{
S_5by5 [ x 0 ]
I_5by5 [ x 1.2 ]
X_5by5 [ x 2.4 ]
}
shape TITLE7
{
S_5by5 [ x 0 ]
E_5by5 [ x 1.2 ]
V_5by5 [ x 2.4 ]
E_5by5 [ x 3.6 ]
N_5by5 [ x 4.8 ]
}
shape TITLE8
{
E_5by5 [ x 0 ]
I_5by5 [ x 1.2 ]
G_5by5 [ x 2.4 ]
H_5by5 [ x 3.6 ]
T_5by5 [ x 4.8 ]
}
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