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-rw-r--r--src/ui/tools/tweak-tool.cpp182
1 files changed, 102 insertions, 80 deletions
diff --git a/src/ui/tools/tweak-tool.cpp b/src/ui/tools/tweak-tool.cpp
index a0394ecd4..56939cc30 100644
--- a/src/ui/tools/tweak-tool.cpp
+++ b/src/ui/tools/tweak-tool.cpp
@@ -56,6 +56,8 @@
#include "sp-gradient-reference.h"
#include "sp-linear-gradient.h"
#include "sp-radial-gradient.h"
+#include "sp-mesh-gradient.h"
+#include "sp-mesh-array.h"
#include "gradient-chemistry.h"
#include "sp-text.h"
#include "sp-flowtext.h"
@@ -761,112 +763,132 @@ static void tweak_colors_in_gradient(SPItem *item, Inkscape::PaintTarget fill_or
p *= (gradient->gradientTransform).inverse();
// now p is in gradient's original coordinates
- double pos = 0;
- double r = 0;
-
SPLinearGradient *lg = dynamic_cast<SPLinearGradient *>(gradient);
- if (lg) {
- Geom::Point p1(lg->x1.computed, lg->y1.computed);
- Geom::Point p2(lg->x2.computed, lg->y2.computed);
- Geom::Point pdiff(p2 - p1);
- double vl = Geom::L2(pdiff);
+ SPRadialGradient *rg = dynamic_cast<SPRadialGradient *>(gradient);
+ if (lg || rg) {
- // This is the matrix which moves and rotates the gradient line
- // so it's oriented along the X axis:
- Geom::Affine norm = Geom::Affine(Geom::Translate(-p1)) * Geom::Affine(Geom::Rotate(-atan2(pdiff[Geom::Y], pdiff[Geom::X])));
+ double pos = 0;
+ double r = 0;
- // Transform the mouse point by it to find out its projection onto the gradient line:
- Geom::Point pnorm = p * norm;
+ if (lg) {
+ Geom::Point p1(lg->x1.computed, lg->y1.computed);
+ Geom::Point p2(lg->x2.computed, lg->y2.computed);
+ Geom::Point pdiff(p2 - p1);
+ double vl = Geom::L2(pdiff);
- // Scale its X coordinate to match the length of the gradient line:
- pos = pnorm[Geom::X] / vl;
- // Calculate radius in lenfth-of-gradient-line units
- r = radius / vl;
+ // This is the matrix which moves and rotates the gradient line
+ // so it's oriented along the X axis:
+ Geom::Affine norm = Geom::Affine(Geom::Translate(-p1)) *
+ Geom::Affine(Geom::Rotate(-atan2(pdiff[Geom::Y], pdiff[Geom::X])));
- } else {
- SPRadialGradient *rg = dynamic_cast<SPRadialGradient *>(gradient);
+ // Transform the mouse point by it to find out its projection onto the gradient line:
+ Geom::Point pnorm = p * norm;
+
+ // Scale its X coordinate to match the length of the gradient line:
+ pos = pnorm[Geom::X] / vl;
+ // Calculate radius in lenfth-of-gradient-line units
+ r = radius / vl;
+
+ }
if (rg) {
Geom::Point c (rg->cx.computed, rg->cy.computed);
pos = Geom::L2(p - c) / rg->r.computed;
r = radius / rg->r.computed;
}
- }
- // Normalize pos to 0..1, taking into accound gradient spread:
- double pos_e = pos;
- if (gradient->getSpread() == SP_GRADIENT_SPREAD_PAD) {
- if (pos > 1) {
- pos_e = 1;
- }
- if (pos < 0) {
- pos_e = 0;
- }
- } else if (gradient->getSpread() == SP_GRADIENT_SPREAD_REPEAT) {
- if (pos > 1 || pos < 0) {
- pos_e = pos - floor(pos);
- }
- } else if (gradient->getSpread() == SP_GRADIENT_SPREAD_REFLECT) {
- if (pos > 1 || pos < 0) {
- bool odd = ((int)(floor(pos)) % 2 == 1);
- pos_e = pos - floor(pos);
- if (odd) {
- pos_e = 1 - pos_e;
+ // Normalize pos to 0..1, taking into accound gradient spread:
+ double pos_e = pos;
+ if (gradient->getSpread() == SP_GRADIENT_SPREAD_PAD) {
+ if (pos > 1) {
+ pos_e = 1;
+ }
+ if (pos < 0) {
+ pos_e = 0;
+ }
+ } else if (gradient->getSpread() == SP_GRADIENT_SPREAD_REPEAT) {
+ if (pos > 1 || pos < 0) {
+ pos_e = pos - floor(pos);
+ }
+ } else if (gradient->getSpread() == SP_GRADIENT_SPREAD_REFLECT) {
+ if (pos > 1 || pos < 0) {
+ bool odd = ((int)(floor(pos)) % 2 == 1);
+ pos_e = pos - floor(pos);
+ if (odd) {
+ pos_e = 1 - pos_e;
+ }
}
}
- }
- SPGradient *vector = sp_gradient_get_forked_vector_if_necessary(gradient, false);
+ SPGradient *vector = sp_gradient_get_forked_vector_if_necessary(gradient, false);
- double offset_l = 0;
- double offset_h = 0;
- SPObject *child_prev = NULL;
- for (auto& child: vector->children) {
- SPStop *stop = dynamic_cast<SPStop *>(&child);
- if (!stop) {
- continue;
- }
+ double offset_l = 0;
+ double offset_h = 0;
+ SPObject *child_prev = NULL;
+ for (auto& child: vector->children) {
+ SPStop *stop = dynamic_cast<SPStop *>(&child);
+ if (!stop) {
+ continue;
+ }
- offset_h = stop->offset;
-
- if (child_prev) {
- SPStop *prevStop = dynamic_cast<SPStop *>(child_prev);
- g_assert(prevStop != NULL);
-
- if (offset_h - offset_l > r && pos_e >= offset_l && pos_e <= offset_h) {
- // the summit falls in this interstop, and the radius is small,
- // so it only affects the ends of this interstop;
- // distribute the force between the two endstops so that they
- // get all the painting even if they are not touched by the brush
- tweak_color (mode, stop->specified_color.v.c, rgb_goal,
- force * (pos_e - offset_l) / (offset_h - offset_l),
- do_h, do_s, do_l);
- tweak_color(mode, prevStop->specified_color.v.c, rgb_goal,
- force * (offset_h - pos_e) / (offset_h - offset_l),
- do_h, do_s, do_l);
- stop->updateRepr();
- child_prev->updateRepr();
- break;
- } else {
- // wide brush, may affect more than 2 stops,
- // paint each stop by the force from the profile curve
- if (offset_l <= pos_e && offset_l > pos_e - r) {
+ offset_h = stop->offset;
+
+ if (child_prev) {
+ SPStop *prevStop = dynamic_cast<SPStop *>(child_prev);
+ g_assert(prevStop != NULL);
+
+ if (offset_h - offset_l > r && pos_e >= offset_l && pos_e <= offset_h) {
+ // the summit falls in this interstop, and the radius is small,
+ // so it only affects the ends of this interstop;
+ // distribute the force between the two endstops so that they
+ // get all the painting even if they are not touched by the brush
+ tweak_color (mode, stop->specified_color.v.c, rgb_goal,
+ force * (pos_e - offset_l) / (offset_h - offset_l),
+ do_h, do_s, do_l);
tweak_color(mode, prevStop->specified_color.v.c, rgb_goal,
- force * tweak_profile (fabs (pos_e - offset_l), r),
+ force * (offset_h - pos_e) / (offset_h - offset_l),
do_h, do_s, do_l);
+ stop->updateRepr();
child_prev->updateRepr();
+ break;
+ } else {
+ // wide brush, may affect more than 2 stops,
+ // paint each stop by the force from the profile curve
+ if (offset_l <= pos_e && offset_l > pos_e - r) {
+ tweak_color(mode, prevStop->specified_color.v.c, rgb_goal,
+ force * tweak_profile (fabs (pos_e - offset_l), r),
+ do_h, do_s, do_l);
+ child_prev->updateRepr();
+ }
+
+ if (offset_h >= pos_e && offset_h < pos_e + r) {
+ tweak_color (mode, stop->specified_color.v.c, rgb_goal,
+ force * tweak_profile (fabs (pos_e - offset_h), r),
+ do_h, do_s, do_l);
+ stop->updateRepr();
+ }
}
+ }
- if (offset_h >= pos_e && offset_h < pos_e + r) {
+ offset_l = offset_h;
+ child_prev = &child;
+ }
+ } else {
+ // Mesh
+ SPMeshGradient *mg = dynamic_cast<SPMeshGradient *>(gradient);
+ if (mg) {
+ SPMeshGradient *mg_array = dynamic_cast<SPMeshGradient *>(mg->getArray());
+ SPMeshNodeArray *array = &(mg_array->array);
+ // Every third node is a corner node
+ for( unsigned i=0; i < array->nodes.size(); i+=3 ) {
+ for( unsigned j=0; j < array->nodes[i].size(); j+=3 ) {
+ SPStop *stop = array->nodes[i][j]->stop;
+ double distance = Geom::L2(Geom::Point(p - array->nodes[i][j]->p));
tweak_color (mode, stop->specified_color.v.c, rgb_goal,
- force * tweak_profile (fabs (pos_e - offset_h), r),
- do_h, do_s, do_l);
+ force * tweak_profile (distance, radius), do_h, do_s, do_l);
stop->updateRepr();
}
}
}
-
- offset_l = offset_h;
- child_prev = &child;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2026-05-19 07:01:09 +0000