# Java Code Examples for java.awt.geom.AffineTransform#TYPE_GENERAL_SCALE

The following examples show how to use java.awt.geom.AffineTransform#TYPE_GENERAL_SCALE . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
 Source Project: dragonwell8_jdk   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```
Example 2
 Source Project: TencentKona-8   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```
Example 3
 Source Project: jdk8u60   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```
Example 4
 Source Project: openjdk-jdk8u   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```
Example 5
 Source Project: openjdk-jdk8u   File: MarlinRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private final float userSpaceLineWidth(AffineTransform at, float lw) {

float widthScale;

if (at == null) {
widthScale = 1.0f;
} else if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM  |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = (float)Math.sqrt(at.getDeterminant());
} else {
// First calculate the "maximum scale" of this transform.
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2.0*(A*C + B*D);    // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
// sqrt omitted, compare to squared limits below.
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = (float)Math.sqrt(widthsquared);
}

return (lw / widthScale);
}
```
Example 6
 Source Project: openjdk-jdk8u-backup   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```
Example 7
 Source Project: Bytecoder   File: DMarlinRenderingEngine.java    License: Apache License 2.0 4 votes  ```private double userSpaceLineWidth(AffineTransform at, double lw) {

double widthScale;

if (at == null) {
widthScale = 1.0d;
} else if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM  |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
// Determinant may be negative (flip), use its absolute value:
widthScale = Math.sqrt(Math.abs(at.getDeterminant()));
} else {
// First calculate the "maximum scale" of this transform.
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2.0d * (A*C + B*D); // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
// sqrt omitted, compare to squared limits below.
double widthsquared = ((EA + EC + hypot) / 2.0d);

widthScale = Math.sqrt(widthsquared);
}

return (lw / widthScale);
}
```
Example 8
 Source Project: Bytecoder   File: MarlinRenderingEngine.java    License: Apache License 2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

float widthScale;

if (at == null) {
widthScale = 1.0f;
} else if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM  |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
// Determinant may be negative (flip), use its absolute value:
widthScale = (float)Math.sqrt(Math.abs(at.getDeterminant()));
} else {
// First calculate the "maximum scale" of this transform.
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2.0d * (A*C + B*D); // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
// sqrt omitted, compare to squared limits below.
double widthsquared = ((EA + EC + hypot) / 2.0d);

widthScale = (float)Math.sqrt(widthsquared);
}

return (lw / widthScale);
}
```
Example 9
 Source Project: openjdk-jdk9   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```
Example 10
 Source Project: openjdk-jdk9   File: MarlinRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private final float userSpaceLineWidth(AffineTransform at, float lw) {

float widthScale;

if (at == null) {
widthScale = 1.0f;
} else if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM  |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = (float)Math.sqrt(at.getDeterminant());
} else {
// First calculate the "maximum scale" of this transform.
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2.0*(A*C + B*D);    // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
// sqrt omitted, compare to squared limits below.
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = (float)Math.sqrt(widthsquared);
}

return (lw / widthScale);
}
```
Example 11
 Source Project: jdk8u-jdk   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```
Example 12
 Source Project: hottub   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```
Example 13
 Source Project: openjdk-8-source   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```
Example 14
 Source Project: openjdk-8   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```
Example 15
 Source Project: jdk8u_jdk   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```
Example 16
 Source Project: jdk8u_jdk   File: DMarlinRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private double userSpaceLineWidth(AffineTransform at, double lw) {

double widthScale;

if (at == null) {
widthScale = 1.0d;
} else if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM  |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
// First calculate the "maximum scale" of this transform.
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2.0d * (A*C + B*D); // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
// sqrt omitted, compare to squared limits below.
double widthsquared = ((EA + EC + hypot) / 2.0d);

widthScale = Math.sqrt(widthsquared);
}

return (lw / widthScale);
}
```
Example 17
 Source Project: jdk8u_jdk   File: MarlinRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

float widthScale;

if (at == null) {
widthScale = 1.0f;
} else if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM  |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = (float)Math.sqrt(at.getDeterminant());
} else {
// First calculate the "maximum scale" of this transform.
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2.0d * (A*C + B*D); // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
// sqrt omitted, compare to squared limits below.
double widthsquared = ((EA + EC + hypot) / 2.0d);

widthScale = (float)Math.sqrt(widthsquared);
}

return (lw / widthScale);
}
```
Example 18
 Source Project: jdk8u-jdk   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```
Example 19
 Source Project: jdk8u-dev-jdk   File: PiscesRenderingEngine.java    License: GNU General Public License v2.0 4 votes  ```private float userSpaceLineWidth(AffineTransform at, float lw) {

double widthScale;

if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX();       // m00
double C = at.getShearX();       // m01
double B = at.getShearY();       // m10
double D = at.getScaleY();       // m11

/*
* Given a 2 x 2 affine matrix [ A B ] such that
*                             [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
*     |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or  |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/

double EA = A*A + B*B;          // x^2 coefficient
double EB = 2*(A*C + B*D);      // xy coefficient
double EC = C*C + D*D;          // y^2 coefficient

/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths.  (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis.  Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/

double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);

widthScale = Math.sqrt(widthsquared);
}

return (float) (lw / widthScale);
}
```