Fix for incorrect clipping of Freestyle strokes when the viewport preview is used.

release/scripts/freestyle/style_modules/parameter_editor.py

@@ -32,7 +32,7 @@ from freestyle import BackboneStretcherShader, BezierCurveShader, BinaryPredicat
     FalseBP1D, FalseUP1D, GuidingLinesShader, Interface0DIterator, Nature, Noise, Normal2DF0D, Operators, \
     PolygonalizationShader, QuantitativeInvisibilityF1D, QuantitativeInvisibilityUP1D, SamplingShader, \
     SpatialNoiseShader, StrokeAttribute, StrokeShader, TipRemoverShader, TrueBP1D, TrueUP1D, UnaryPredicate0D, \
-    UnaryPredicate1D, VertexOrientation2DF0D, WithinImageBoundaryUP1D
+    UnaryPredicate1D, VertexOrientation2DF0D, WithinImageBoundaryUP1D, ContextFunctions
 from Functions0D import CurveMaterialF0D
 from PredicatesU1D import pyNatureUP1D
 from logical_operators import AndUP1D, NotUP1D, OrUP1D
@@ -1046,17 +1046,7 @@ def process(layer_name, lineset_name):
             selection_criteria.append(upred)
     # prepare selection criteria by image border
     if lineset.select_by_image_border:
-        fac = scene.render.resolution_percentage / 100.0
-        w = scene.render.resolution_x * fac
-        h = scene.render.resolution_y * fac
-        if scene.render.use_border:
-            xmin = scene.render.border_min_x * w
-            xmax = scene.render.border_max_x * w
-            ymin = scene.render.border_min_y * h
-            ymax = scene.render.border_max_y * h
-        else:
-            xmin, xmax = 0.0, float(w)
-            ymin, ymax = 0.0, float(h)
+        xmin, ymin, xmax, ymax = ContextFunctions.get_border()
         upred = WithinImageBoundaryUP1D(xmin, ymin, xmax, ymax)
         selection_criteria.append(upred)
     # select feature edges

source/blender/freestyle/intern/python/BPy_ContextFunctions.cpp

@@ -79,6 +79,26 @@ ContextFunctions_get_canvas_height(PyObject *self)
 	return PyLong_FromLong(ContextFunctions::GetCanvasHeightCF());
 }
 
+static char ContextFunctions_get_border___doc__[] =
+".. method:: get_border()\n"
+"\n"
+"   Returns the border.\n"
+"\n"
+"   :return: A tuple of 4 numbers (xmin, ymin, xmax, ymax).\n"
+"   :rtype: tuple\n";
+
+static PyObject *
+ContextFunctions_get_border(PyObject *self)
+{
+	BBox<Vec2i> border(ContextFunctions::GetBorderCF());
+	PyObject *v = PyTuple_New(4);
+	PyTuple_SET_ITEM(v, 0, PyLong_FromLong(border.getMin().x()));
+	PyTuple_SET_ITEM(v, 1, PyLong_FromLong(border.getMin().y()));
+	PyTuple_SET_ITEM(v, 2, PyLong_FromLong(border.getMax().x()));
+	PyTuple_SET_ITEM(v, 3, PyLong_FromLong(border.getMax().y()));
+	return v;
+}
+
 static char ContextFunctions_load_map___doc__[] =
 ".. function:: load_map(file_name, map_name, num_levels=4, sigma=1.0)\n"
 "\n"
@@ -232,6 +252,8 @@ static PyMethodDef module_functions[] = {
 	                     ContextFunctions_get_canvas_width___doc__},
 	{"get_canvas_height", (PyCFunction)ContextFunctions_get_canvas_height, METH_NOARGS,
 	                      ContextFunctions_get_canvas_height___doc__},
+	{"get_border", (PyCFunction)ContextFunctions_get_border, METH_NOARGS,
+	               ContextFunctions_get_border___doc__},
 	{"load_map", (PyCFunction)ContextFunctions_load_map, METH_VARARGS | METH_KEYWORDS,
 	             ContextFunctions_load_map___doc__},
 	{"read_map_pixel", (PyCFunction)ContextFunctions_read_map_pixel, METH_VARARGS | METH_KEYWORDS,

source/blender/freestyle/intern/stroke/Canvas.h

@@ -195,6 +195,7 @@ public:
 
 	virtual int width() const = 0;
 	virtual int height() const = 0;
+	virtual BBox<Vec2i> border() const = 0;
 	virtual BBox<Vec3r> scene3DBBox() const = 0;
 
 	inline const StrokeRenderer *renderer() const

source/blender/freestyle/intern/stroke/ContextFunctions.cpp

@@ -51,6 +51,11 @@ unsigned GetCanvasHeightCF()
 	return Canvas::getInstance()->height();
 }
 
+BBox<Vec2i> GetBorderCF()
+{
+	return Canvas::getInstance()->border();
+}
+
 void LoadMapCF(const char *iFileName, const char *iMapName, unsigned iNbLevels, float iSigma)
 {
 	return Canvas::getInstance()->loadMap(iFileName, iMapName, iNbLevels, iSigma);

source/blender/freestyle/intern/stroke/ContextFunctions.h

@@ -54,10 +54,15 @@ LIB_STROKE_EXPORT
 unsigned GetCanvasWidthCF();
 
 // GetCanvasHeight
-/*! Returns the canvas width */
+/*! Returns the canvas height */
 LIB_STROKE_EXPORT 
 unsigned GetCanvasHeightCF();
 
+// GetBorder
+/*! Returns the border */
+LIB_STROKE_EXPORT 
+BBox<Vec2i> GetBorderCF();
+
 // Load map
 /*! Loads an image map for further reading */
 LIB_STROKE_EXPORT