diff options
Diffstat (limited to 'basegfx/source/tools/gradienttools.cxx')
| -rw-r--r-- | basegfx/source/tools/gradienttools.cxx | 101 |
1 files changed, 45 insertions, 56 deletions
diff --git a/basegfx/source/tools/gradienttools.cxx b/basegfx/source/tools/gradienttools.cxx index 89293cfcb61c..857b668da68e 100644 --- a/basegfx/source/tools/gradienttools.cxx +++ b/basegfx/source/tools/gradienttools.cxx @@ -49,6 +49,8 @@ namespace basegfx o_rGradientInfo.maBackTextureTransform.identity(); o_rGradientInfo.mnSteps = nSteps; + fAngle = -fAngle; + double fTargetSizeX(rTargetRange.getWidth()); double fTargetSizeY(rTargetRange.getHeight()); double fTargetOffsetX(rTargetRange.getMinX()); @@ -67,17 +69,30 @@ namespace basegfx fTargetSizeY = fNewY; } - // add object scale before rotate + const double fSizeWithoutBorder=1.0 - fBorder; + if( bAxial ) + { + o_rGradientInfo.maTextureTransform.scale(1.0, fSizeWithoutBorder * .5); + o_rGradientInfo.maTextureTransform.translate(0.0, 0.5); + } + else + { + if(!fTools::equal(fSizeWithoutBorder, 1.0)) + { + o_rGradientInfo.maTextureTransform.scale(1.0, fSizeWithoutBorder); + o_rGradientInfo.maTextureTransform.translate(0.0, fBorder); + } + } + o_rGradientInfo.maTextureTransform.scale(fTargetSizeX, fTargetSizeY); // add texture rotate after scale to keep perpendicular angles if(0.0 != fAngle) { - B2DPoint aCenter(0.5, 0.5); - aCenter *= o_rGradientInfo.maTextureTransform; - - o_rGradientInfo.maTextureTransform = basegfx::tools::createRotateAroundPoint(aCenter, fAngle) - * o_rGradientInfo.maTextureTransform; + const B2DPoint aCenter(0.5*fTargetSizeX, + 0.5*fTargetSizeY); + o_rGradientInfo.maTextureTransform *= + basegfx::tools::createRotateAroundPoint(aCenter, fAngle); } // add object translate @@ -86,24 +101,9 @@ namespace basegfx // prepare aspect for texture o_rGradientInfo.mfAspectRatio = (0.0 != fTargetSizeY) ? fTargetSizeX / fTargetSizeY : 1.0; - // build transform from u,v to [0.0 .. 1.0]. As base, use inverse texture transform + // build transform from u,v to [0.0 .. 1.0]. o_rGradientInfo.maBackTextureTransform = o_rGradientInfo.maTextureTransform; o_rGradientInfo.maBackTextureTransform.invert(); - - double fSizeWithoutBorder=0; - if( bAxial ) - { - fSizeWithoutBorder = (1.0 - fBorder) * 0.5; - o_rGradientInfo.maBackTextureTransform.translate(0.0, -0.5); - } - else - { - fSizeWithoutBorder = 1.0 - fBorder; - o_rGradientInfo.maBackTextureTransform.translate(0.0, -fBorder); - } - - if(!fTools::equal(fSizeWithoutBorder, 0.0)) - o_rGradientInfo.maBackTextureTransform.scale(1.0, 1.0 / fSizeWithoutBorder); } /** Most of the setup for radial & ellipsoidal gradient is the same, @@ -121,6 +121,8 @@ namespace basegfx o_rGradientInfo.maBackTextureTransform.identity(); o_rGradientInfo.mnSteps = nSteps; + fAngle = -fAngle; + double fTargetSizeX(rTargetRange.getWidth()); double fTargetSizeY(rTargetRange.getHeight()); double fTargetOffsetX(rTargetRange.getMinX()); @@ -143,20 +145,19 @@ namespace basegfx fTargetSizeY = 1.4142 * fTargetSizeY; } - // add object scale before rotate + const double fHalfBorder((1.0 - fBorder) * 0.5); + o_rGradientInfo.maTextureTransform.scale(fHalfBorder, fHalfBorder); + + o_rGradientInfo.maTextureTransform.translate(0.5, 0.5); o_rGradientInfo.maTextureTransform.scale(fTargetSizeX, fTargetSizeY); - if( !bCircular ) + // add texture rotate after scale to keep perpendicular angles + if( !bCircular && 0.0 != fAngle) { - // add texture rotate after scale to keep perpendicular angles - if(0.0 != fAngle) - { - B2DPoint aCenter(0.5, 0.5); - aCenter *= o_rGradientInfo.maTextureTransform; - - o_rGradientInfo.maTextureTransform = basegfx::tools::createRotateAroundPoint(aCenter, fAngle) - * o_rGradientInfo.maTextureTransform; - } + const B2DPoint aCenter(0.5*fTargetSizeX, + 0.5*fTargetSizeY); + o_rGradientInfo.maTextureTransform *= + basegfx::tools::createRotateAroundPoint(aCenter, fAngle); } // add defined offsets after rotation @@ -173,17 +174,9 @@ namespace basegfx // prepare aspect for texture o_rGradientInfo.mfAspectRatio = (0.0 != fTargetSizeY) ? fTargetSizeX / fTargetSizeY : 1.0; - // build transform from u,v to [0.0 .. 1.0]. As base, use inverse texture transform + // build transform from u,v to [0.0 .. 1.0]. o_rGradientInfo.maBackTextureTransform = o_rGradientInfo.maTextureTransform; o_rGradientInfo.maBackTextureTransform.invert(); - o_rGradientInfo.maBackTextureTransform.translate(-0.5, -0.5); - const double fHalfBorder((1.0 - fBorder) * 0.5); - - if(!fTools::equal(fHalfBorder, 0.0)) - { - const double fFactor(1.0 / fHalfBorder); - o_rGradientInfo.maBackTextureTransform.scale(fFactor, fFactor); - } } /** Setup for rect & square gradient is exactly the same. Factored out @@ -200,6 +193,8 @@ namespace basegfx o_rGradientInfo.maBackTextureTransform.identity(); o_rGradientInfo.mnSteps = nSteps; + fAngle = -fAngle; + double fTargetSizeX(rTargetRange.getWidth()); double fTargetSizeY(rTargetRange.getHeight()); double fTargetOffsetX(rTargetRange.getMinX()); @@ -218,17 +213,19 @@ namespace basegfx fTargetSizeY = fNewY; } - // add object scale before rotate + const double fHalfBorder((1.0 - fBorder) * 0.5); + o_rGradientInfo.maTextureTransform.scale(fHalfBorder, fHalfBorder); + + o_rGradientInfo.maTextureTransform.translate(0.5, 0.5); o_rGradientInfo.maTextureTransform.scale(fTargetSizeX, fTargetSizeY); // add texture rotate after scale to keep perpendicular angles if(0.0 != fAngle) { - B2DPoint aCenter(0.5, 0.5); - aCenter *= o_rGradientInfo.maTextureTransform; - - o_rGradientInfo.maTextureTransform = basegfx::tools::createRotateAroundPoint(aCenter, fAngle) - * o_rGradientInfo.maTextureTransform; + const B2DPoint aCenter(0.5*fTargetSizeX, + 0.5*fTargetSizeY); + o_rGradientInfo.maTextureTransform *= + basegfx::tools::createRotateAroundPoint(aCenter, fAngle); } // add defined offsets after rotation @@ -248,14 +245,6 @@ namespace basegfx // build transform from u,v to [0.0 .. 1.0]. As base, use inverse texture transform o_rGradientInfo.maBackTextureTransform = o_rGradientInfo.maTextureTransform; o_rGradientInfo.maBackTextureTransform.invert(); - o_rGradientInfo.maBackTextureTransform.translate(-0.5, -0.5); - const double fHalfBorder((1.0 - fBorder) * 0.5); - - if(!fTools::equal(fHalfBorder, 0.0)) - { - const double fFactor(1.0 / fHalfBorder); - o_rGradientInfo.maBackTextureTransform.scale(fFactor, fFactor); - } } namespace tools |