Commit: 42e2398ae35da2b499d18ea589767108bd093687
Author: Campbell Barton
Date: Fri Jun 17 01:45:40 2016 +1000
Branches: master
https://developer.blender.org/rB42e2398ae35da2b499d18ea589767108bd093687
Vertex paint color operations
D2050 by @metaraptor with edits
Adds levels, brightness/contrast, hsv & invert operations.
===================================================================
M release/scripts/startup/bl_ui/space_view3d.py
M source/blender/editors/sculpt_paint/paint_intern.h
M source/blender/editors/sculpt_paint/paint_ops.c
M source/blender/editors/sculpt_paint/paint_vertex.c
===================================================================
diff --git a/release/scripts/startup/bl_ui/space_view3d.py
b/release/scripts/startup/bl_ui/space_view3d.py
index e8d3329..b88b831 100644
--- a/release/scripts/startup/bl_ui/space_view3d.py
+++ b/release/scripts/startup/bl_ui/space_view3d.py
@@ -1726,6 +1726,13 @@ class VIEW3D_MT_paint_vertex(Menu):
layout.operator("paint.vertex_color_smooth")
layout.operator("paint.vertex_color_dirt")
+ layout.separator()
+
+ layout.operator("paint.vertex_color_invert", text="Invert")
+ layout.operator("paint.vertex_color_levels", text="Levels")
+ layout.operator("paint.vertex_color_hsv", text="Hue Saturation Value")
+ layout.operator("paint.vertex_color_brightness_contrast",
text="Bright/Contrast")
+
class VIEW3D_MT_hook(Menu):
bl_label = "Hooks"
diff --git a/source/blender/editors/sculpt_paint/paint_intern.h
b/source/blender/editors/sculpt_paint/paint_intern.h
index b6a7d67..7e05ab9 100644
--- a/source/blender/editors/sculpt_paint/paint_intern.h
+++ b/source/blender/editors/sculpt_paint/paint_intern.h
@@ -101,6 +101,10 @@ bool ED_wpaint_fill(struct VPaint *wp, struct Object *ob,
float paintweight);
bool ED_vpaint_smooth(struct Object *ob);
+typedef void (*VPaintTransform_Callback)(const float col[3], const void
*user_data, float r_col[3]);
+
+bool ED_vpaint_color_transform(struct Object *ob, VPaintTransform_Callback
vpaint_tx_fn, const void *user_data);
+
void PAINT_OT_weight_paint_toggle(struct wmOperatorType *ot);
void PAINT_OT_weight_paint(struct wmOperatorType *ot);
void PAINT_OT_weight_set(struct wmOperatorType *ot);
diff --git a/source/blender/editors/sculpt_paint/paint_ops.c
b/source/blender/editors/sculpt_paint/paint_ops.c
index da7667c..bf92341 100644
--- a/source/blender/editors/sculpt_paint/paint_ops.c
+++ b/source/blender/editors/sculpt_paint/paint_ops.c
@@ -315,6 +315,241 @@ static void PAINT_OT_vertex_color_smooth(wmOperatorType
*ot)
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
+
+/** \name Vertex Color Transformations
+ * \{ */
+
+struct VPaintTx_BrightContrastData {
+ /* pre-calculated */
+ float gain;
+ float offset;
+};
+
+static void vpaint_tx_brightness_contrast(const float col[3], const void
*user_data, float r_col[3])
+{
+ const struct VPaintTx_BrightContrastData *data = user_data;
+
+ for (int i = 0; i < 3; i++) {
+ r_col[i] = data->gain * col[i] + data->offset;
+ }
+}
+
+static int vertex_color_brightness_contrast_exec(bContext *C, wmOperator *op)
+{
+ Object *obact = CTX_data_active_object(C);
+
+ float gain, offset;
+ {
+ float brightness = RNA_float_get(op->ptr, "brightness");
+ float contrast = RNA_float_get(op->ptr, "contrast");
+ brightness /= 100.0f;
+ float delta = contrast / 200.0f;
+ gain = 1.0f - delta * 2.0f;
+ /*
+ * The algorithm is by Werner D. Streidt
+ * (http://visca.com/ffactory/archives/5-99/msg00021.html)
+ * Extracted of OpenCV demhist.c
+ */
+ if (contrast > 0) {
+ gain = 1.0f / ((gain != 0.0f) ? gain : FLT_EPSILON);
+ offset = gain * (brightness - delta);
+ }
+ else {
+ delta *= -1;
+ offset = gain * (brightness + delta);
+ }
+ }
+
+ const struct VPaintTx_BrightContrastData user_data = {
+ .gain = gain,
+ .offset = offset,
+ };
+
+ if (ED_vpaint_color_transform(obact, vpaint_tx_brightness_contrast,
&user_data)) {
+ ED_region_tag_redraw(CTX_wm_region(C));
+ return OPERATOR_FINISHED;
+ }
+ else {
+ return OPERATOR_CANCELLED;
+ }
+}
+
+static void PAINT_OT_vertex_color_brightness_contrast(wmOperatorType *ot)
+{
+ PropertyRNA *prop;
+
+ /* identifiers */
+ ot->name = "Vertex Paint Bright/Contrast";
+ ot->idname = "PAINT_OT_vertex_color_brightness_contrast";
+ ot->description = "Adjust vertex color brightness/contrast";
+
+ /* api callbacks */
+ ot->exec = vertex_color_brightness_contrast_exec;
+ ot->poll = vertex_paint_mode_poll;
+
+ /* flags */
+ ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
+
+ /* params */
+ const float min = -100, max = +100;
+ prop = RNA_def_float(ot->srna, "brightness", 0.0f, min, max,
"Brightness", "", min, max);
+ prop = RNA_def_float(ot->srna, "contrast", 0.0f, min, max, "Contrast",
"", min, max);
+ RNA_def_property_ui_range(prop, min, max, 1, 1);
+}
+
+struct VPaintTx_HueSatData {
+ float hue;
+ float sat;
+ float val;
+};
+
+static void vpaint_tx_hsv(const float col[3], const void *user_data, float
r_col[3])
+{
+ const struct VPaintTx_HueSatData *data = user_data;
+ float hsv[3];
+ rgb_to_hsv_v(col, hsv);
+
+ hsv[0] += (data->hue - 0.5f);
+ if (hsv[0] > 1.0f) {
+ hsv[0] -= 1.0f;
+ }
+ else if (hsv[0] < 0.0f) {
+ hsv[0] += 1.0f;
+ }
+ hsv[1] *= data->sat;
+ hsv[2] *= data->val;
+
+ hsv_to_rgb_v(hsv, r_col);
+}
+
+static int vertex_color_hsv_exec(bContext *C, wmOperator *op)
+{
+ Object *obact = CTX_data_active_object(C);
+
+ const struct VPaintTx_HueSatData user_data = {
+ .hue = RNA_float_get(op->ptr, "h"),
+ .sat = RNA_float_get(op->ptr, "s"),
+ .val = RNA_float_get(op->ptr, "v"),
+ };
+
+ if (ED_vpaint_color_transform(obact, vpaint_tx_hsv, &user_data)) {
+ ED_region_tag_redraw(CTX_wm_region(C));
+ return OPERATOR_FINISHED;
+ }
+ else {
+ return OPERATOR_CANCELLED;
+ }
+}
+
+static void PAINT_OT_vertex_color_hsv(wmOperatorType *ot)
+{
+ /* identifiers */
+ ot->name = "Vertex Paint Hue Saturation Value";
+ ot->idname = "PAINT_OT_vertex_color_hsv";
+ ot->description = "Adjust vertex color HSV values";
+
+ /* api callbacks */
+ ot->exec = vertex_color_hsv_exec;
+ ot->poll = vertex_paint_mode_poll;
+
+ /* flags */
+ ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
+
+ /* params */
+ RNA_def_float(ot->srna, "h", 0.5f, 0.0f, 1.0f, "Hue", "", 0.0f, 1.0f);
+ RNA_def_float(ot->srna, "s", 1.0f, 0.0f, 2.0f, "Saturation", "", 0.0f,
2.0f);
+ RNA_def_float(ot->srna, "v", 1.0f, 0.0f, 2.0f, "Value", "", 0.0f, 2.0f);
+}
+
+static void vpaint_tx_invert(const float col[3], const void
*UNUSED(user_data), float r_col[3])
+{
+ for (int i = 0; i < 3; i++) {
+ r_col[i] = 1.0f - col[i];
+ }
+}
+
+static int vertex_color_invert_exec(bContext *C, wmOperator *UNUSED(op))
+{
+ Object *obact = CTX_data_active_object(C);
+
+ if (ED_vpaint_color_transform(obact, vpaint_tx_invert, NULL)) {
+ ED_region_tag_redraw(CTX_wm_region(C));
+ return OPERATOR_FINISHED;
+ }
+ else {
+ return OPERATOR_CANCELLED;
+ }
+}
+
+static void PAINT_OT_vertex_color_invert(wmOperatorType *ot)
+{
+ /* identifiers */
+ ot->name = "Vertex Paint Invert";
+ ot->idname = "PAINT_OT_vertex_color_invert";
+ ot->description = "Invert RGB values";
+
+ /* api callbacks */
+ ot->exec = vertex_color_invert_exec;
+ ot->poll = vertex_paint_mode_poll;
+
+ /* flags */
+ ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
+}
+
+
+struct VPaintTx_LevelsData {
+ float gain;
+ float offset;
+};
+
+static void vpaint_tx_levels(const float col[3], const void *user_data, float
r_col[3])
+{
+ const struct VPaintTx_LevelsData *data = user_data;
+ for (int i = 0; i < 3; i++) {
+ r_col[i] = data->gain * (col[i] + data->offset);
+ }
+}
+
+static int vertex_color_levels_exec(bContext *C, wmOperator *op)
+{
+ Object *obact = CTX_data_active_object(C);
+
+ const struct VPaintTx_LevelsData user_data = {
+ .gain = RNA_float_get(op->ptr, "gain"),
+ .offset = RNA_float_get(op->ptr, "offset"),
+ };
+
+ if (ED_vpaint_color_transform(obact, vpaint_tx_levels, &user_data)) {
+ ED_region_tag_redraw(CTX_wm_region(C));
+ return OPERATOR_FINISHED;
+ }
+ else {
+ return OPERATOR_CANCELLED;
+ }
+}
+
+static void PAINT_OT_vertex_color_levels(wmOperatorType *ot)
+{
+ /* identifiers */
+ ot->name = "Vertex Paint Levels";
+ ot->idname = "PAINT_OT_vertex_color_levels";
+ ot->description = "Adjust levels of vertex colors";
+
+ /* api callbacks */
+ ot->exec = vertex_color_levels_exec;
+ ot->poll = vertex_paint_mode_poll;
+
+ /* flags */
+ ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
+
+ /* params */
+ RNA_def_float(ot->srna, "offset", 0.0f, -1.0f, 1.0f, "Offset", "Value
to add to colors", -1.0f, 1.0f);
+ RNA_def_float(ot->srna, "gain", 1.0f, 0.0f, FLT_MAX, "Gain", "Value to
multiply colors by", 0.0f, 10.0f);
+}
+
+/** \} */
+
+
static int brush_reset_exec(bContext *C, wmOperator *UNUSED(op))
{
Paint *paint = BKE_paint_get_active_from_context(C);
@@ -1112,6 +1347,11 @@ void ED_operatortypes_paint(void)
WM_operatortype_append(PAINT_OT_vertex_color_set);
WM_operatortype_append(PAINT_OT_vertex_color_smooth);
+ WM_operatortype_append(PAINT_OT_vertex_color_brightness_contrast);
+ WM_operatortype_append(PAINT_OT_vertex_color_hsv);
+ WM_operatortype_append(PAINT_OT_vertex_color_invert);
+ WM_operatortype_append(PAINT_OT_vertex_color_levels);
+
/* face-select */
WM_operatortype_append(PAINT_OT_face_select_linked);
WM_operatortype_append(PAINT_OT_face_select_linked_pick);
diff --git a/source/blender/editors/sculpt_paint/paint_vertex.c
b/source/blender/editors/sculpt_paint/paint_vertex.c
index 2a1e770..8785587 100644
--- a/source/blender/editors/sculpt_paint/paint_vertex.c
+++ b/source/blender/editors/sculpt_paint/paint_vertex.c
@@ -502,6 +502,51 @@ bool ED_vpaint_smooth(Object *ob)
return true;
}
+/**
+ * Apply callback to each vertex of the active vertex color layer.
+ */
+bool ED_vpaint_color_transform(
+ struct Object *ob,
+ VPaintTransform_Callback vpaint_tx_fn,
+ const void *user_data)
+{
+ Mesh *me;
+ const MPoly *mp;
+
+ if (((me = BKE_mesh_from_object(ob)) == NULL) ||
+ (me->mloopcol == NULL && (make_vertexcol(ob) == false)))
+ {
+ return false;
+ }
+
+ const bool do_face_sel = (me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0;
+ mp = me->mpoly;
+
+ for (int i = 0; i < me->totpoly; i++, mp++) {
+ MLoopCol *lcol = &me->mloopcol[mp->loopstart];
+
+ if (do_face_sel && !(mp->flag & ME_FACE_SEL)) {
+ continue;
+ }
+
+ for (int j = 0; j < mp->totloop; j++, lcol++) {
+ float col[3];
+ rgb_uchar_to_float(col, &lcol->r);
+
+ vpaint_tx_fn(col, user_data, col);
+
+ rgb_float_to_uchar(&lcol->r, col);
+ }
+ }
+
+ /* remove stale me->mcol, will be added later */
+ BKE_mesh_tessface_clear(me);
+
+ DAG_id_tag_update(&me->id, 0);
+
+ return true;
+}
+
/* XXX: should be re-implemented as a vertex/weight paint 'color correct'
operator */
#if 0
void vpaint_dogamma(Scene *scene)
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