X-Git-Url: https://git.ao2.it/vrm.git/blobdiff_plain/cb636907756fdaa87a409240bbebfda832bca34a..dcc666c5b495072d477e85b544d6eb967fb6acc0:/vrm.py diff --git a/vrm.py b/vrm.py index 69099c4..35df00c 100755 --- a/vrm.py +++ b/vrm.py @@ -2,12 +2,12 @@ """ Name: 'VRM' Blender: 241 -Group: 'Export' -Tooltip: 'Vector Rendering Method Export Script' +Group: 'Render' +Tooltip: 'Vector Rendering Method script' """ __author__ = "Antonio Ospite" -__url__ = ["blender"] +__url__ = ["http://vrm.projects.blender.org"] __version__ = "0.3" __bpydoc__ = """\ @@ -43,18 +43,23 @@ __bpydoc__ = """\ # # Things TODO for a next release: # - Switch to the Mesh structure, should be considerably faster -# (partially done, but cannot sort faces, yet) +# (partially done, but with Mesh we cannot sort faces, yet) # - Use a better depth sorting algorithm # - Review how selections are made (this script uses selection states of # primitives to represent visibility infos) -# - Implement Clipping and do handle object intersections -# - Implement Edge Styles (silhouettes, contours, etc.) +# - Implement clipping of primitives and do handle object intersections. +# (for now only clipping for whole objects is supported). +# - Implement Edge Styles (silhouettes, contours, etc.) (partially done). # - Implement Edge coloring # - Use multiple lighting sources in color calculation -# - Implement Shading Styles? -# - Use another representation for the 2D projection? +# - Implement Shading Styles? (for now we use Flat Shading). +# - Use a data structure other than Mesh to represent the 2D image? # Think to a way to merge adjacent polygons that have the same color. -# - Add other Vector Writers. +# Or a way to use paths for silhouettes and contours. +# - Add Vector Writers other that SVG. +# - Consider SMIL for animation handling instead of ECMA Script? (Firefox do +# not support SMIL for animations) +# - FIX the issue with negative scales in object tranformations! # # --------------------------------------------------------------------- # @@ -74,18 +79,86 @@ from math import * # Some global settings + PRINT_POLYGONS = True + +POLYGON_EXPANSION_TRICK = True # Hidden to the user for now + PRINT_EDGES = False SHOW_HIDDEN_EDGES = False - +EDGE_STYLE = 'silhouette' EDGES_WIDTH = 0.5 -POLYGON_EXPANSION_TRICK = True - RENDER_ANIMATION = False -# Do not work for now! -OPTIMIZE_FOR_SPACE = False +OPTIMIZE_FOR_SPACE = True + +OUTPUT_FORMAT = 'SVG' + + + +# --------------------------------------------------------------------- +# +## Utility Mesh class +# +# --------------------------------------------------------------------- +class MeshUtils: + + def getEdgeAdjacentFaces(edge, mesh): + """Get the faces adjacent to a given edge. + + There can be 0, 1 or more (usually 2) faces adjacent to an edge. + """ + adjface_list = [] + + for f in mesh.faces: + if (edge.v1 in f.v) and (edge.v2 in f.v): + adjface_list.append(f) + + return adjface_list + + def isVisibleEdge(e, mesh): + """Normal edge selection rule. + + An edge is visible if _any_ of its adjacent faces is selected. + Note: if the edge has no adjacent faces we want to show it as well, + useful for "edge only" portion of objects. + """ + + adjacent_faces = MeshUtils.getEdgeAdjacentFaces(e, mesh) + + if len(adjacent_faces) == 0: + return True + + selected_faces = [f for f in adjacent_faces if f.sel] + + if len(selected_faces) != 0: + return True + else: + return False + + def isSilhouetteEdge(e, mesh): + """Silhuette selection rule. + + An edge is a silhuette edge if it is shared by two faces with + different selection status or if it is a boundary edge of a selected + face. + """ + + adjacent_faces = MeshUtils.getEdgeAdjacentFaces(e, mesh) + + if ((len(adjacent_faces) == 1 and adjacent_faces[0].sel == 1) or + (len(adjacent_faces) == 2 and + adjacent_faces[0].sel != adjacent_faces[1].sel) + ): + return True + else: + return False + + getEdgeAdjacentFaces = staticmethod(getEdgeAdjacentFaces) + isVisibleEdge = staticmethod(isVisibleEdge) + isSilhouetteEdge = staticmethod(isSilhouetteEdge) + # --------------------------------------------------------------------- @@ -129,7 +202,6 @@ class Projector: else: mP = self._calcPerspectiveMatrix(fovy, aspect, near, far) - # View transformation cam = Matrix(cameraObj.getInverseMatrix()) cam.transpose() @@ -214,9 +286,10 @@ class Projector: return m + # --------------------------------------------------------------------- # -## 2DObject representation class +## 2D Object representation class # # --------------------------------------------------------------------- @@ -293,10 +366,10 @@ class SVGVectorWriter(VectorWriter): """A concrete class for writing SVG output. """ - def __init__(self, file): + def __init__(self, fileName): """Simply call the parent Contructor. """ - VectorWriter.__init__(self, file) + VectorWriter.__init__(self, fileName) ## @@ -314,6 +387,9 @@ class SVGVectorWriter(VectorWriter): """ self._printFooter() + # remember to call the close method of the parent + VectorWriter.close(self) + def printCanvas(self, scene, doPrintPolygons=True, doPrintEdges=False, showHiddenEdges=False): @@ -334,6 +410,7 @@ class SVGVectorWriter(VectorWriter): self.file.write("\n" % (framenumber, framestyle) ) + for obj in Objects: if(obj.getType() != 'Mesh'): @@ -443,7 +520,7 @@ class SVGVectorWriter(VectorWriter): for face in mesh.faces: if not face.sel: - continue + continue self.file.write("\n") @@ -491,8 +578,7 @@ class SVGVectorWriter(VectorWriter): hidden_stroke_style = "" - # Consider an edge selected if both vertices are selected - if e.v1.sel == 0 or e.v2.sel == 0: + if e.sel == 0: if showHiddenEdges == False: continue else: @@ -519,6 +605,19 @@ class SVGVectorWriter(VectorWriter): # # --------------------------------------------------------------------- +# A dictionary to collect all the different edge styles and their edge +# selection criteria +edgeSelectionStyles = { + 'normal': MeshUtils.isVisibleEdge, + 'silhouette': MeshUtils.isSilhouetteEdge + } + +# A dictionary to collect the supported output formats +outputWriters = { + 'SVG': SVGVectorWriter, + } + + class Renderer: """Render a scene viewed from a given camera. @@ -549,13 +648,22 @@ class Renderer: # Render from the currently active camera self.cameraObj = self._SCENE.getCurrentCamera() + # Get a projector for this camera. + # NOTE: the projector wants object in world coordinates, + # so we should remember to apply modelview transformations + # _before_ we do projection transformations. + self.proj = Projector(self.cameraObj, self.canvasRatio) + # Get the list of lighting sources obj_lst = self._SCENE.getChildren() self.lights = [ o for o in obj_lst if o.getType() == 'Lamp'] + # When there are no lights we use a default lighting source + # that have the same position of the camera if len(self.lights) == 0: l = Lamp.New('Lamp') lobj = Object.New('Lamp') + lobj.loc = self.cameraObj.loc lobj.link(l) self.lights.append(lobj) @@ -568,7 +676,7 @@ class Renderer: """Render picture or animation and write it out. The parameters are: - - a Vector writer object than will be used to output the result. + - a Vector writer object that will be used to output the result. - a flag to tell if we want to render an animation or only the current frame. """ @@ -591,7 +699,16 @@ class Renderer: for f in range(startFrame, endFrame+1): context.currentFrame(f) - renderedScene = self.doRenderScene(self._SCENE) + # Use some temporary workspace, a full copy of the scene + inputScene = self._SCENE.copy(2) + + try: + renderedScene = self.doRenderScene(inputScene) + except: + self._SCENE.makeCurrent() + Scene.unlink(inputScene) + del inputScene + outputWriter.printCanvas(renderedScene, doPrintPolygons = PRINT_POLYGONS, doPrintEdges = PRINT_EDGES, @@ -607,70 +724,63 @@ class Renderer: context.currentFrame(currentFrame) - def doRenderScene(self, inputScene): + def doRenderScene(self, workScene): """Control the rendering process. Here we control the entire rendering process invoking the operation needed to transform and project the 3D scene in two dimensions. """ - # Use some temporary workspace, a full copy of the scene - workScene = inputScene.copy(2) + # global processing of the scene - # Get a projector for this scene. - # NOTE: the projector wants object in world coordinates, - # so we should apply modelview transformations _before_ - # projection transformations - proj = Projector(self.cameraObj, self.canvasRatio) + self._doConvertGeometricObjToMesh(workScene) + self._doSceneClipping(workScene) - # Convert geometric object types to mesh Objects - geometricObjTypes = ['Mesh', 'Surf', 'Curve'] # TODO: add the Text type - Objects = workScene.getChildren() - objList = [ o for o in Objects if o.getType() in geometricObjTypes ] - for obj in objList: - old_obj = obj - obj = self._convertToRawMeshObj(obj) - workScene.link(obj) - workScene.unlink(old_obj) + # XXX: Joining objects does not work in batch mode!! + # Do not touch the following if, please :) + + global OPTIMIZE_FOR_SPACE + if Blender.mode == 'background': + print "\nWARNING! Joining objects not supported in background mode!\n" + OPTIMIZE_FOR_SPACE = False - # FIXME: does not work!!, Blender segfaults on joins if OPTIMIZE_FOR_SPACE: self._joinMeshObjectsInScene(workScene) - - # global processing of the scene - self._doClipping() self._doSceneDepthSorting(workScene) # Per object activities - Objects = workScene.getChildren() + Objects = workScene.getChildren() for obj in Objects: - if obj.getType() not in geometricObjTypes: - print "Only geometric Objects supported! - Skipping type:", obj.getType() + if obj.getType() != 'Mesh': + print "Only Mesh supported! - Skipping type:", obj.getType() continue print "Rendering: ", obj.getName() - mesh = obj.data + mesh = obj.getData() self._doModelToWorldCoordinates(mesh, obj.matrix) self._doObjectDepthSorting(mesh) + # We use both Mesh and NMesh because for depth sorting we change + # face order and Mesh class don't let us to do that. + mesh.update() + mesh = obj.getData(mesh=1) + self._doBackFaceCulling(mesh) self._doColorAndLighting(mesh) - # TODO: 'style' can be a function that determine - # if an edge should be showed? - self._doEdgesStyle(mesh, style=None) + self._doEdgesStyle(mesh, edgeSelectionStyles[EDGE_STYLE]) - self._doProjection(mesh, proj) + self._doProjection(mesh, self.proj) # Update the object data, important! :) mesh.update() @@ -684,19 +794,15 @@ class Renderer: # Utility methods - def _worldPosition(self, obj): + def _getObjPosition(self, obj): """Return the obj position in World coordinates. """ return obj.matrix.translationPart() - def _cameraWorldPosition(self): - """Return the camera position in World coordinates. - - This trick is needed when the camera follows a path and then - camera.loc does not correspond to the current real position of the - camera in the world. + def _cameraViewDirection(self): + """Get the View Direction form the camera matrix. """ - return self._worldPosition(self.cameraObj) + return Vector(self.cameraObj.matrix[2]).resize3D() # Faces methods @@ -722,25 +828,20 @@ class Renderer: """ normal = Vector(face.no) - c = self._cameraWorldPosition() - - # View vector in orthographics projections can be considered simply as the - # camera position - view_vect = Vector(c) - #if self.cameraObj.data.getType() == 1: - # view_vect = Vector(c) - - # View vector as in perspective projections - # it is the difference between the camera position and one point of - # the face, we choose the farthest point. - # TODO: make the code more pythonic :) + camPos = self._getObjPosition(self.cameraObj) + view_vect = None + + # View Vector in orthographics projections is the view Direction of + # the camera + if self.cameraObj.data.getType() == 1: + view_vect = self._cameraViewDirection() + + # View vector in perspective projections can be considered as + # the difference between the camera position and one point of + # the face, we choose the farthest point from the camera. if self.cameraObj.data.getType() == 0: - max_len = 0 - for vect in face: - vv = Vector(c) - Vector(vect.co) - if vv.length > max_len: - max_len = vv.length - view_vect = vv + vv = max( [ ((camPos - Vector(v.co)).length, (camPos - Vector(v.co))) for v in face] ) + view_vect = vv[1] # if d > 0 the face is visible from the camera d = view_vect * normal @@ -753,11 +854,61 @@ class Renderer: # Scene methods - def _doClipping(self): - """Clip object against the View Frustum. + def _doConvertGeometricObjToMesh(self, scene): + """Convert all "geometric" objects to mesh ones. """ - print "TODO: _doClipping()" - return + geometricObjTypes = ['Mesh', 'Surf', 'Curve', 'Text'] + + Objects = scene.getChildren() + objList = [ o for o in Objects if o.getType() in geometricObjTypes ] + for obj in objList: + old_obj = obj + obj = self._convertToRawMeshObj(obj) + scene.link(obj) + scene.unlink(old_obj) + + + # XXX Workaround for Text and Curve which have some normals + # inverted when they are converted to Mesh, REMOVE that when + # blender will fix that!! + if old_obj.getType() in ['Curve', 'Text']: + me = obj.getData(mesh=1) + for f in me.faces: f.sel = 1; + for v in me.verts: v.sel = 1; + me.remDoubles(0) + me.triangleToQuad() + me.recalcNormals() + me.update() + + + def _doSceneClipping(self, scene): + """Clip objects against the View Frustum. + + For now clip away only objects according to their center position. + """ + + cpos = self._getObjPosition(self.cameraObj) + view_vect = self._cameraViewDirection() + + near = self.cameraObj.data.clipStart + far = self.cameraObj.data.clipEnd + + aspect = float(self.canvasRatio[0])/float(self.canvasRatio[1]) + fovy = atan(0.5/aspect/(self.cameraObj.data.lens/32)) + fovy = fovy * 360.0/pi + + Objects = scene.getChildren() + for o in Objects: + if o.getType() != 'Mesh': continue; + + obj_vect = Vector(cpos) - self._getObjPosition(o) + + d = obj_vect*view_vect + theta = AngleBetweenVecs(obj_vect, view_vect) + + # if the object is outside the view frustum, clip it away + if (d < near) or (d > far) or (theta > fovy): + scene.unlink(o) def _doSceneDepthSorting(self, scene): """Sort objects in the scene. @@ -765,40 +916,47 @@ class Renderer: The object sorting is done accordingly to the object centers. """ - c = self._cameraWorldPosition() + c = self._getObjPosition(self.cameraObj) - Objects = scene.getChildren() + by_center_pos = (lambda o1, o2: + (o1.getType() == 'Mesh' and o2.getType() == 'Mesh') and + cmp((self._getObjPosition(o1) - Vector(c)).length, + (self._getObjPosition(o2) - Vector(c)).length) + ) - #Objects.sort(lambda obj1, obj2: - # cmp((Vector(obj1.loc) - Vector(c)).length, - # (Vector(obj2.loc) - Vector(c)).length - # ) - # ) + # TODO: implement sorting by bounding box, if obj1.bb is inside obj2.bb, + # then ob1 goes farther than obj2, useful when obj2 has holes + by_bbox = None - Objects.sort(lambda obj1, obj2: - cmp((self._worldPosition(obj1) - Vector(c)).length, - (self._worldPosition(obj2) - Vector(c)).length - ) - ) + Objects = scene.getChildren() + Objects.sort(by_center_pos) # update the scene for o in Objects: scene.unlink(o) scene.link(o) - def _joinMeshObjectsInScene(self, scene): """Merge all the Mesh Objects in a scene into a single Mesh Object. """ - bigObj = Object.New('Mesh', 'BigOne') + oList = [o for o in scene.getChildren() if o.getType()=='Mesh'] - print "Before join", oList + + # FIXME: Object.join() do not work if the list contains 1 object + if len(oList) == 1: + return + + mesh = Mesh.New() + bigObj = Object.New('Mesh', 'BigOne') + bigObj.link(mesh) + bigObj.join(oList) - print "After join" scene.link(bigObj) for o in oList: scene.unlink(o) + scene.update() + # Per object methods @@ -811,6 +969,11 @@ class Renderer: newObject = Object.New('Mesh', 'RawMesh_'+object.name) newObject.link(me) + # If the object has no materials set a default material + if not me.materials: + me.materials = [Material.New()] + #for f in me.faces: f.mat = 0 + newObject.setMatrix(object.getMatrix()) return newObject @@ -821,6 +984,11 @@ class Renderer: This step is done simply applying to the object its tranformation matrix and recalculating its normals. """ + # XXX FIXME: blender do not transform normals in the right way when + # there are negative scale values + if matrix[0][0] < 0 or matrix[1][1] < 0 or matrix[2][2] < 0: + print "WARNING: Negative scales, expect incorrect results!" + mesh.transform(matrix, True) def _doObjectDepthSorting(self, mesh): @@ -829,23 +997,26 @@ class Renderer: The faces in the object are sorted following the distance of the vertices from the camera position. """ - c = self._cameraWorldPosition() + c = self._getObjPosition(self.cameraObj) # hackish sorting of faces - mesh.faces.sort( - lambda f1, f2: - # Sort faces according to the min distance from the camera - #cmp(min([(Vector(v.co)-Vector(c)).length for v in f1]), - # min([(Vector(v.co)-Vector(c)).length for v in f2]))) - # Sort faces according to the max distance from the camera + # Sort faces according to the max distance from the camera + by_max_vert_dist = (lambda f1, f2: cmp(max([(Vector(v.co)-Vector(c)).length for v in f1]), max([(Vector(v.co)-Vector(c)).length for v in f2]))) - - # Sort faces according to the avg distance from the camera - #cmp(sum([(Vector(v.co)-Vector(c)).length for v in f1])/len(f1), - # sum([(Vector(v.co)-Vector(c)).length for v in f2])/len(f2))) + + # Sort faces according to the min distance from the camera + by_min_vert_dist = (lambda f1, f2: + cmp(min([(Vector(v.co)-Vector(c)).length for v in f1]), + min([(Vector(v.co)-Vector(c)).length for v in f2]))) + + # Sort faces according to the avg distance from the camera + by_avg_vert_dist = (lambda f1, f2: + cmp(sum([(Vector(v.co)-Vector(c)).length for v in f1])/len(f1), + sum([(Vector(v.co)-Vector(c)).length for v in f2])/len(f2))) + mesh.faces.sort(by_max_vert_dist) mesh.faces.reverse() def _doBackFaceCulling(self, mesh): @@ -855,7 +1026,8 @@ class Renderer: select the vertices belonging to visible faces. """ - # Select all vertices, so edges without faces can be displayed + # Select all vertices, so edges can be displayed even if there are no + # faces for v in mesh.verts: v.sel = 1 @@ -868,17 +1040,15 @@ class Renderer: # Is this the correct way to propagate the face selection info to the # vertices belonging to a face ?? - # TODO: Using the Mesh class this should come for free. Right? - Mesh.Mode(Mesh.SelectModes['VERTEX']) - for f in mesh.faces: - if not f.sel: - for v in f: - v.sel = 0 + # TODO: Using the Mesh module this should come for free. Right? + #Mesh.Mode(Mesh.SelectModes['VERTEX']) + #for f in mesh.faces: + # if not f.sel: + # for v in f: v.sel = 0; - for f in mesh.faces: - if f.sel: - for v in f: - v.sel = 1 + #for f in mesh.faces: + # if f.sel: + # for v in f: v.sel = 1; def _doColorAndLighting(self, mesh): """Apply an Illumination model to the object. @@ -890,18 +1060,18 @@ class Renderer: # If the mesh has vertex colors already, use them, # otherwise turn them on and do some calculations - if mesh.hasVertexColours(): + if mesh.vertexColors: return - mesh.hasVertexColours(True) + mesh.vertexColors = 1 materials = mesh.materials # TODO: use multiple lighting sources light_obj = self.lights[0] - light_pos = self._worldPosition(light_obj) + light_pos = self._getObjPosition(light_obj) light = light_obj.data - camPos = self._cameraWorldPosition() + camPos = self._getObjPosition(self.cameraObj) # We do per-face color calculation (FLAT Shading), we can easily turn # to a per-vertex calculation if we want to implement some shading @@ -916,7 +1086,7 @@ class Renderer: mat = materials[f.mat] # A new default material - if not mat: + if mat == None: mat = Material.New('defMat') L = Vector(light_pos).normalize() @@ -952,26 +1122,43 @@ class Renderer: I = ki + Iamb + Idiff + Ispec + # Set Alpha component + I = list(I) + I.append(mat.getAlpha()) + # Clamp I values between 0 and 1 I = [ min(c, 1) for c in I] I = [ max(0, c) for c in I] tmp_col = [ int(c * 255.0) for c in I] - vcol = NMesh.Col(tmp_col[0], tmp_col[1], tmp_col[2], 255) - f.col = [] - for v in f.v: - f.col.append(vcol) + for c in f.col: + c.r = tmp_col[0] + c.g = tmp_col[1] + c.b = tmp_col[2] + c.a = tmp_col[3] + + def _doEdgesStyle(self, mesh, edgestyleSelect): + """Process Mesh Edges accroding to a given selection style. - def _doEdgesStyle(self, mesh, style): - """Process Mesh Edges. (For now copy the edge data, in next version it - can be a place where recognize silouhettes and/or contours). + Examples of algorithms: - input: an edge list - return: a processed edge list + Contours: + given an edge if its adjacent faces have the same normal (that is + they are complanar), than deselect it. + + Silhouettes: + given an edge if one its adjacent faces is frontfacing and the + other is backfacing, than select it, else deselect. """ - #print "\tTODO: _doEdgeStyle()" - return + Mesh.Mode(Mesh.SelectModes['EDGE']) + + for e in mesh.edges: + + e.sel = 0 + if edgestyleSelect(e, mesh): + e.sel = 1 + def _doProjection(self, mesh, projector): """Calculate the Projection for the object. """ @@ -987,44 +1174,238 @@ class Renderer: # --------------------------------------------------------------------- # -## Main Program +## GUI Class and Main Program # # --------------------------------------------------------------------- + +from Blender import BGL, Draw +from Blender.BGL import * + +class GUI: + + def _init(): + + # Output Format menu + default_value = outputWriters.keys().index(OUTPUT_FORMAT)+1 + GUI.outFormatMenu = Draw.Create(default_value) + GUI.evtOutFormatMenu = 0 + + # Animation toggle button + GUI.animToggle = Draw.Create(RENDER_ANIMATION) + GUI.evtAnimToggle = 1 + + # Join Objects toggle button + GUI.joinObjsToggle = Draw.Create(OPTIMIZE_FOR_SPACE) + GUI.evtJoinObjsToggle = 2 + + # Render filled polygons + GUI.polygonsToggle = Draw.Create(PRINT_POLYGONS) + GUI.evtPolygonsToggle = 3 + # We hide the POLYGON_EXPANSION_TRICK, for now + + # Render polygon edges + GUI.showEdgesToggle = Draw.Create(PRINT_EDGES) + GUI.evtShowEdgesToggle = 4 + + # Render hidden edges + GUI.showHiddenEdgesToggle = Draw.Create(SHOW_HIDDEN_EDGES) + GUI.evtShowHiddenEdgesToggle = 5 + + # Edge Style menu + default_value = edgeSelectionStyles.keys().index(EDGE_STYLE)+1 + GUI.edgeStyleMenu = Draw.Create(default_value) + GUI.evtEdgeStyleMenu = 6 + + # Edge Width slider + GUI.edgeWidthSlider = Draw.Create(EDGES_WIDTH) + GUI.evtEdgeWidthSlider = 7 + + # Render Button + GUI.evtRenderButton = 8 + + # Exit Button + GUI.evtExitButton = 9 + + def draw(): + + # initialize static members + GUI._init() + + glClear(GL_COLOR_BUFFER_BIT) + glColor3f(0.0, 0.0, 0.0) + glRasterPos2i(10, 350) + Draw.Text("VRM: Vector Rendering Method script.") + glRasterPos2i(10, 335) + Draw.Text("Press Q or ESC to quit.") + + # Build the output format menu + glRasterPos2i(10, 310) + Draw.Text("Select the output Format:") + outMenuStruct = "Output Format %t" + for t in outputWriters.keys(): + outMenuStruct = outMenuStruct + "|%s" % t + GUI.outFormatMenu = Draw.Menu(outMenuStruct, GUI.evtOutFormatMenu, + 10, 285, 160, 18, GUI.outFormatMenu.val, "Choose the Output Format") + + # Animation toggle + GUI.animToggle = Draw.Toggle("Animation", GUI.evtAnimToggle, + 10, 260, 160, 18, GUI.animToggle.val, + "Toggle rendering of animations") + + # Join Objects toggle + GUI.joinObjsToggle = Draw.Toggle("Join objects", GUI.evtJoinObjsToggle, + 10, 235, 160, 18, GUI.joinObjsToggle.val, + "Join objects in the rendered file") + + # Render Button + Draw.Button("Render", GUI.evtRenderButton, 10, 210-25, 75, 25+18, + "Start Rendering") + Draw.Button("Exit", GUI.evtExitButton, 95, 210-25, 75, 25+18, "Exit!") + + # Rendering Styles + glRasterPos2i(200, 310) + Draw.Text("Rendering Style:") + + # Render Polygons + GUI.polygonsToggle = Draw.Toggle("Filled Polygons", GUI.evtPolygonsToggle, + 200, 285, 160, 18, GUI.polygonsToggle.val, + "Render filled polygons") + + # Render Edges + GUI.showEdgesToggle = Draw.Toggle("Show Edges", GUI.evtShowEdgesToggle, + 200, 260, 160, 18, GUI.showEdgesToggle.val, + "Render polygon edges") + + if GUI.showEdgesToggle.val == 1: + + # Edge Style + edgeStyleMenuStruct = "Edge Style %t" + for t in edgeSelectionStyles.keys(): + edgeStyleMenuStruct = edgeStyleMenuStruct + "|%s" % t + GUI.edgeStyleMenu = Draw.Menu(edgeStyleMenuStruct, GUI.evtEdgeStyleMenu, + 200, 235, 160, 18, GUI.edgeStyleMenu.val, + "Choose the edge style") + + # Edge size + GUI.edgeWidthSlider = Draw.Slider("Width: ", GUI.evtEdgeWidthSlider, + 200, 210, 160, 18, GUI.edgeWidthSlider.val, + 0.0, 10.0, 0, "Change Edge Width") + + # Show Hidden Edges + GUI.showHiddenEdgesToggle = Draw.Toggle("Show Hidden Edges", + GUI.evtShowHiddenEdgesToggle, + 200, 185, 160, 18, GUI.showHiddenEdgesToggle.val, + "Render hidden edges as dashed lines") + + glRasterPos2i(10, 160) + Draw.Text("Antonio Ospite (c) 2006") + + def event(evt, val): + + if evt == Draw.ESCKEY or evt == Draw.QKEY: + Draw.Exit() + else: + return + + Draw.Redraw(1) + + def button_event(evt): + global PRINT_POLYGONS + global POLYGON_EXPANSION_TRICK + global PRINT_EDGES + global SHOW_HIDDEN_EDGES + global EDGE_STYLE + global EDGES_WIDTH + global RENDER_ANIMATION + global OPTIMIZE_FOR_SPACE + global OUTPUT_FORMAT + + if evt == GUI.evtExitButton: + Draw.Exit() + elif evt == GUI.evtOutFormatMenu: + i = GUI.outFormatMenu.val - 1 + OUTPUT_FORMAT = outputWriters.keys()[i] + elif evt == GUI.evtAnimToggle: + RENDER_ANIMATION = bool(GUI.animToggle.val) + elif evt == GUI.evtJoinObjsToggle: + OPTIMIZE_FOR_SPACE = bool(GUI.joinObjsToggle.val) + elif evt == GUI.evtPolygonsToggle: + PRINT_POLYGONS = bool(GUI.polygonsToggle.val) + elif evt == GUI.evtShowEdgesToggle: + PRINT_EDGES = bool(GUI.showEdgesToggle.val) + elif evt == GUI.evtShowHiddenEdgesToggle: + SHOW_HIDDEN_EDGES = bool(GUI.showHiddenEdgesToggle.val) + elif evt == GUI.evtEdgeStyleMenu: + i = GUI.edgeStyleMenu.val - 1 + EDGE_STYLE = edgeSelectionStyles.keys()[i] + elif evt == GUI.evtEdgeWidthSlider: + EDGES_WIDTH = float(GUI.edgeWidthSlider.val) + elif evt == GUI.evtRenderButton: + label = "Save %s" % OUTPUT_FORMAT + # Show the File Selector + global outputfile + Blender.Window.FileSelector(vectorize, label, outputfile) + + else: + print "Event: %d not handled!" % evt + + if evt: + Draw.Redraw(1) + #GUI.conf_debug() + + def conf_debug(): + print + print "PRINT_POLYGONS:", PRINT_POLYGONS + print "POLYGON_EXPANSION_TRICK:", POLYGON_EXPANSION_TRICK + print "PRINT_EDGES:", PRINT_EDGES + print "SHOW_HIDDEN_EDGES:", SHOW_HIDDEN_EDGES + print "EDGE_STYLE:", EDGE_STYLE + print "EDGES_WIDTH:", EDGES_WIDTH + print "RENDER_ANIMATION:", RENDER_ANIMATION + print "OPTIMIZE_FOR_SPACE:", OPTIMIZE_FOR_SPACE + print "OUTPUT_FORMAT:", OUTPUT_FORMAT + + _init = staticmethod(_init) + draw = staticmethod(draw) + event = staticmethod(event) + button_event = staticmethod(button_event) + conf_debug = staticmethod(conf_debug) + +# A wrapper function for the vectorizing process def vectorize(filename): """The vectorizing process is as follows: - Instanciate the writer and the renderer - Render! """ + + if filename == "": + print "\nERROR: invalid file name!" + return + from Blender import Window editmode = Window.EditMode() if editmode: Window.EditMode(0) - writer = SVGVectorWriter(filename) + actualWriter = outputWriters[OUTPUT_FORMAT] + writer = actualWriter(filename) renderer = Renderer() renderer.doRendering(writer, RENDER_ANIMATION) if editmode: Window.EditMode(1) -def vectorize_gui(filename): - """Draw the gui. - - I would like to keep that simple, really. - """ - Blender.Window.FileSelector (vectorize, 'Save SVG', filename) - Blender.Redraw() - # Here the main if __name__ == "__main__": - import os - outputfile = os.path.splitext(Blender.Get('filename'))[0]+".svg" + outputfile = "" + basename = Blender.sys.basename(Blender.Get('filename')) + if basename != "": + outputfile = Blender.sys.splitext(basename)[0] + "." + str(OUTPUT_FORMAT).lower() - # with this trick we can run the script in batch mode - try: - vectorize_gui(outputfile) - except: + if Blender.mode == 'background': vectorize(outputfile) + else: + Draw.Register(GUI.draw, GUI.event, GUI.button_event)