diff options
author | 2012-03-27 13:45:24 +0000 | |
---|---|---|
committer | 2012-03-27 13:45:24 +0000 | |
commit | f47c217cc8de3be1f960156bfb76899a8e4bcccf (patch) | |
tree | 9ef741fbc2e282db39a03c46ea5fa4e2af0e5868 /experimental | |
parent | 11fa4a7095a2691eea3530dfbd7f676b41d3e7a9 (diff) |
overzealously deleted files
git-svn-id: http://skia.googlecode.com/svn/trunk@3502 2bbb7eff-a529-9590-31e7-b0007b416f81
Diffstat (limited to 'experimental')
-rw-r--r-- | experimental/Intersection/CubicParameterization_TestUtility.cpp | 53 | ||||
-rw-r--r-- | experimental/Intersection/QuadraticParameterization_TestUtility.cpp | 17 |
2 files changed, 70 insertions, 0 deletions
diff --git a/experimental/Intersection/CubicParameterization_TestUtility.cpp b/experimental/Intersection/CubicParameterization_TestUtility.cpp new file mode 100644 index 0000000000..356ca88f85 --- /dev/null +++ b/experimental/Intersection/CubicParameterization_TestUtility.cpp @@ -0,0 +1,53 @@ +// included by CubicParameterization.cpp +// accesses internal functions to validate parameterized coefficients + +#include "Parameterization_Test.h" + +static void parameter_coeffs(const Cubic& cubic, double coeffs[coeff_count]) { +#if USE_SYVESTER + double ax, bx, cx, dx; + if (try_alt) + alt_set_abcd(&cubic[0].x, ax, bx, cx, dx); + else + set_abcd(&cubic[0].x, ax, bx, cx, dx); + double ay, by, cy, dy; + if (try_alt) + alt_set_abcd(&cubic[0].y, ay, by, cy, dy); + else + set_abcd(&cubic[0].y, ay, by, cy, dy); + calc_ABCD(ax, ay, coeffs); + if (!try_alt) calc_bc(dx, bx, cx); + if (!try_alt) calc_bc(dy, by, cy); +#else + double ax = cubic[0].x; + double bx = cubic[1].x; + double cx = cubic[2].x; + double dx = cubic[3].x; + double ay = cubic[0].y; + double by = cubic[1].y; + double cy = cubic[2].y; + double dy = cubic[3].y; + calc_ABCD(ax, bx, cx, dx, ay, by, cy, dy, coeffs); +#endif + for (int index = xx_coeff; index < coeff_count; ++index) { + int procIndex = index - xx_coeff; + coeffs[index] = (*calc_proc[procIndex])(ax, bx, cx, dx, ay, by, cy, dy); + } +} + +bool point_on_parameterized_curve(const Cubic& cubic, const _Point& point) { + double coeffs[coeff_count]; + parameter_coeffs(cubic, coeffs); + double xxx = coeffs[xxx_coeff] * point.x * point.x * point.x; + double xxy = coeffs[xxy_coeff] * point.x * point.x * point.y; + double xyy = coeffs[xyy_coeff] * point.x * point.y * point.y; + double yyy = coeffs[yyy_coeff] * point.y * point.y * point.y; + double xx = coeffs[ xx_coeff] * point.x * point.x; + double xy = coeffs[ xy_coeff] * point.x * point.y; + double yy = coeffs[ yy_coeff] * point.y * point.y; + double x = coeffs[ x_coeff] * point.x; + double y = coeffs[ y_coeff] * point.y; + double c = coeffs[ c_coeff]; + double sum = xxx + xxy + xyy + yyy + xx + xy + yy + x + y + c; + return approximately_zero(sum); +} diff --git a/experimental/Intersection/QuadraticParameterization_TestUtility.cpp b/experimental/Intersection/QuadraticParameterization_TestUtility.cpp new file mode 100644 index 0000000000..08a562bb8d --- /dev/null +++ b/experimental/Intersection/QuadraticParameterization_TestUtility.cpp @@ -0,0 +1,17 @@ +// included by QuadraticParameterization.cpp +// accesses internal functions to validate parameterized coefficients + +#include "Parameterization_Test.h" + +bool point_on_parameterized_curve(const Quadratic& quad, const _Point& point) { + double coeffs[coeff_count]; + implicit_coefficients(quad, coeffs); + double xx = coeffs[ xx_coeff] * point.x * point.x; + double xy = coeffs[ xy_coeff] * point.x * point.y; + double yy = coeffs[ yy_coeff] * point.y * point.y; + double x = coeffs[ x_coeff] * point.x; + double y = coeffs[ y_coeff] * point.y; + double c = coeffs[ c_coeff]; + double sum = xx + xy + yy + x + y + c; + return approximately_zero(sum); +} |