RE: [pygame] loss of transparency in scaling surfaces
Thanks Lenard, I used colorkey with per-pixel alpha that is working well. Thanks Sibtey > Hi > > I am drawing a line on pygame screen and created one transparent > surface of size (800,700) and scaling down using smoothscale to the > pygame screen size .In this condition everything is working fine. > > > > If have created the transparent surface of size like 4892X3614 and > then scaling down to the pygame screen size then transparency is lost. > Can any one help me understanding this? The script is shown below > > > > > > > > import pygame > > BACKGROUNDCOLOR = (255,255,255) > [snip code] > > # for large surface like this transparecy is Lost > > surf = pygame.Surface((4892,3614)) > > surf.fill(BACKGROUNDCOLOR) > > # set transparency > > surf.set_colorkey(BACKGROUNDCOLOR,pygame.RLEACCEL) > > #draw a line on transparent surface > > pygame.draw.line(surf,(200,155,155), (550,550),(750,550),2) > > #scale down > > surf3 = pygame.transform.smoothscale(surf, (800,700)) > > screen.blit(surf3,(0,0)) > > > > pygame.display.flip() > [snip code] The problem is that smoothscale doesn't guarantee colors will remain unchanged. I found the background color of surf3 was (253, 253, 253, 255). The following modified version code does make surf3's background transparent. import pygame import sys BACKGROUNDCOLOR = (255,255,255) pygame.display.init() screen = pygame.display.set_mode((800,700)) screen.fill(BACKGROUNDCOLOR) # draw a line on pygame screen pygame.draw.line(screen,(255,0,0), (50,50),(100,100),1) # for small surface like this transparecy is fine ## * ##surf = pygame.Surface((800,700)) ## ** # for large surface like this transparecy is Lost surf = pygame.Surface((4892,3614), 0, 24) surf.fill(BACKGROUNDCOLOR) #draw a line on transparent surface pygame.draw.line(surf,(200,155,155), (550,550),(750,550),2) #scale down surf3 = pygame.transform.smoothscale(surf, (800,700)) #set transparency surf3.set_colorkey(surf3.get_at((0,0)),pygame.RLEACCEL) screen.blit(surf3,(0,0)) pygame.display.flip() while 1: events = pygame.event.get() for event in events: if event.type==pygame.KEYDOWN and event.key ==pygame.K_ESCAPE: pygame.display.quit() sys.exit() But it also shows that transparency and scaling don't go together well. Using colorkey with per-pixel alpha may be a better solution: surf = pygame.Surface((4892,3614), pygame.SRCALPHA, 32) bg = BACKGROUNDCOLOR surf.fill((bg[0],bg[1],bg[2],0)) # Transparent background color. surf3 = pygame.transform.smoothscale(surf, (800,700)) screen.blit(surf3,(0,0)) -- Lenard Lindstrom <[EMAIL PROTECTED]>
[pygame] loss of transparency in scaling surfaces
Hi I am drawing a line on pygame screen and created one transparent surface of size (800,700) and scaling down using smoothscale to the pygame screen size .In this condition everything is working fine. If have created the transparent surface of size like 4892X3614 and then scaling down to the pygame screen size then transparency is lost. Can any one help me understanding this? The script is shown below import pygame BACKGROUNDCOLOR = (255,255,255) pygame.display.init() screen = pygame.display.set_mode((800,700)) screen.fill(BACKGROUNDCOLOR) # draw a line on pygame screen pygame.draw.line(screen,(255,0,0), (50,50),(100,100),1) # for small surface like this transparecy is fine ## * ##surf = pygame.Surface((800,700)) ## ** # for large surface like this transparecy is Lost surf = pygame.Surface((4892,3614)) surf.fill(BACKGROUNDCOLOR) # set transparency surf.set_colorkey(BACKGROUNDCOLOR,pygame.RLEACCEL) #draw a line on transparent surface pygame.draw.line(surf,(200,155,155), (550,550),(750,550),2) #scale down surf3 = pygame.transform.smoothscale(surf, (800,700)) screen.blit(surf3,(0,0)) pygame.display.flip() while 1: events = pygame.event.get() for event in events: if event.type==pygame.KEYDOWN and event.key ==pygame.K_ESCAPE: pygame.display.quit() thanks, Sibtey
[pygame] help PGU Utilities
Hi, How to write the resizable Notes on pygame surface similar to paste it note in Microsoft visio. I have just gone through the pgu utilities but couldn't get it properly. Any help on how to use pgu or any better way to write the note is appreciated. Thanks, Sibtey
RE: [pygame] Surfaces must not be locked during blit
Hugo, logicalSurface is an object that contain pygame surface I am drawing everything on it and blitting this surface to the pygame screen. I haven't locked the surface anywhere else, all the others drawing function working fine only blit function gives the problem if and only if I draw the pages quickly by pressing pageUp and pand pageDown. I have temporary fixed this problem like this, but I want a better solution def blit(self,screen, logicalSurface, (offsetX,offsetY)): """ blit the surface on to the pygamewindow, logicalSurface -> pygame surface """ try: screen.blit (logicalSurface.surface, (-offsetX, -offsetY)) except: time.sleep(0.1) self.blit(screen, pygameSurface,(offsetX, offsetY)) Thanks, Sibtey _ On Behalf Of Hugo Arts What exactly is the difference between logicalSurface and logicalsurface.surface? in draw(), you draw directly on logicalSurface. But after that you blit logicalSurface.surface to the screen. pygame draw functions will lock/unlock surface automagically IIRC, so the problem is likely with the blit call. Try to find out if either of the surfaces is locked, and if so, try to unlock them. The surface may be locked multiple times, and you must unlock it the same number of times to regain access, so you might need more than one unlock call. Are you locking these surfaces elsewhere in your code? There may be a bug in that code that causes some surfaces to stay locked when they shouldn't. Remember to call unlock the same amount of times you called lock. If you don't use lock in your code, there may be a bug in 1.8.0 locking. On Fri, Jun 27, 2008 at 11:16 AM, Sibtey Mehdi <[EMAIL PROTECTED]> wrote: I am using 1.8.0 packages (march 29 2008). On page Up and Page Down I am calling the drawPage() function. def drawPage(self, page, logicalSurface): self.draw(page, logicalSurface) self.screen.blit (logicalSurface.surface, (-offsetX, -offsetY)) def draw(self, page, logicalSurf): #draw rect for rec in page.rects: self.Pygame.draw.rect(logicalSurf,rec.color,(rec.x1,rec.y1,rec.x2,rec.y2), 1) #text for text in page.texts: #draw text #lines for line in page.lines: self.Pygame.draw.line(logicalSurf, [line.colline.x1,line.y1],[line.x2,line.y2],1) thanks, Sibtey Are you using svn pygame? There have been some changes since 1.8.0 to the locking code. Hugo Arts wrote: > well, if pygame says this is a locking issue, then it is most likely a > locking issue. If you say unlocking the surface did not fix the problem as > you said, I don't have another solution with the current supplied > information. > > We'll likely need to see some code before we can figure out the actual > error. > > Hugo > > On Fri, Jun 27, 2008 at 8:54 AM, Sibtey Mehdi <[EMAIL PROTECTED]> > wrote: > > >> Hi >> >> I am drawing some graphics page (Text, rect, lines, polygon) on pygame >> surface, but when I quickly pressing page up and page down my application >> give the Pygame error "Surfaces must not be locked during blit". >> >> I have also unlocked the surface by suface.unlock before blitting but it >> doesn't solve the problem. >> >> So please help me out of this problem >> >> >> >> Thanks, >> >> Sibtey >> >> >> >> > >
RE: [pygame] Surfaces must not be locked during blit
I am using 1.8.0 packages (march 29 2008). On page Up and Page Down I am calling the drawPage() function. def drawPage(self, page, logicalSurface): self.draw(page, logicalSurface) self.screen.blit (logicalSurface.surface, (-offsetX, -offsetY)) def draw(self, page, logicalSurf): #draw rect for rec in page.rects: self.Pygame.draw.rect(logicalSurf,rec.color,(rec.x1,rec.y1,rec.x2,rec.y2), 1) #text for text in page.texts: #draw text #lines for line in page.lines: self.Pygame.draw.line(logicalSurf, [line.colline.x1,line.y1],[line.x2,line.y2],1) thanks, Sibtey Are you using svn pygame? There have been some changes since 1.8.0 to the locking code. Hugo Arts wrote: > well, if pygame says this is a locking issue, then it is most likely a > locking issue. If you say unlocking the surface did not fix the problem as > you said, I don't have another solution with the current supplied > information. > > We'll likely need to see some code before we can figure out the actual > error. > > Hugo > > On Fri, Jun 27, 2008 at 8:54 AM, Sibtey Mehdi <[EMAIL PROTECTED]> > wrote: > > >> Hi >> >> I am drawing some graphics page (Text, rect, lines, polygon) on pygame >> surface, but when I quickly pressing page up and page down my application >> give the Pygame error "Surfaces must not be locked during blit". >> >> I have also unlocked the surface by suface.unlock before blitting but it >> doesn't solve the problem. >> >> So please help me out of this problem >> >> >> >> Thanks, >> >> Sibtey >> >> >> >> > >
[pygame] Surfaces must not be locked during blit
Hi I am drawing some graphics page (Text, rect, lines, polygon) on pygame surface, but when I quickly pressing page up and page down my application give the Pygame error "Surfaces must not be locked during blit". I have also unlocked the surface by suface.unlock before blitting but it doesn't solve the problem. So please help me out of this problem Thanks, Sibtey
RE: [pygame] hoe to create the RoundRect ?
Yeah, I need such types of rectangles. _ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ian Mallett Sent: Thursday, March 27, 2008 2:15 PM To: pygame-users@seul.org Subject: Re: [pygame] hoe to create the RoundRect ? Do you mean like a rectangle with rounded edges? As far as I know, PyGame doesn't go that. You can, however, make several rectangles of different sizes, and draw them over each other. Because they overlap, they will appear to form a rounded rectangle. Ian <>
[pygame] hoe to create the RoundRect ?
How I can draw the RoundRect Using pygame, is there any direct way or I have to draw this by draw.line and draw.arc
[pygame] scaling the entire screen
I am creating a offscreen surface, size (5000, 3200) and drawing Rect then I am scaling down that offscreen surface to fit in to the real surface but I will get the scattered lines on the screen or half rect. Is there any way to solve this problem?
RE: [pygame] mapping logical coordinate ????
Thanks,for your kind help But, I am getting the coordinate (3000, 2000, 3400, 2400) from some others tools and want to create the pygame.draw.rect (3000, 2000, 3400, 2400) to show some information. I have create a Surface pygame.Surface ((4000, 3000)) and then tried to scale down it but the rectangle has not displayed in the pygame window. Can anyone help me out? I have tried something like this screen = pygame.display.set_mode ((800,700)) worksurf = pygame.Surface((4000,3000)) pygame.draw.rect (worksurf, (255, 0, 0), (3000, 2000, 3400, 2400), 1) screen.blit (worksurf, (0, 0))) newSurf = pygame.transform.scale (worksurf, (800,700)) #scale down screen.blit (newSurf, (0, 0))) Nick Moffitt: > The tactical.py has the classes that do the transformations My bad. http://zork.net/~nick/tkhasi/space.py is the file that actually does the coordinate transformations (but remember that positive Y is down on the screen) -- "Ill-informed qmail-bashing is better than no Nick Moffitt qmail-bashing at all." [EMAIL PROTECTED] --Don Marti
[pygame] mapping logical coordinate ????
Hi All How to map the logical coordinates in to window coordinates using pygame. Thanks..
RE: [pygame] how to display pygame graphics within a wxpython window
Ok, but is there any way to tell PyGame to paint any window, I mean by passing the window handle to pygame. hi, Using pygame with wxpython is not supported. See this page for details: http://www.pygame.org/wiki/Gui cheers, On Wed, Mar 5, 2008 at 4:01 PM, Sibtey Mehdi <[EMAIL PROTECTED]> wrote: > > > > > Hi > > How to display pygame graphics within a wxpython window. I have > tried the last example on http://wiki.wxpython.org/IntegratingPyGame but it > opens the two separate window one for pygame one for frame. I want to create > one frame that can use the pygame drawing functionality. > > > > > > Thanks. > > Sibtey
[pygame] how to display pygame graphics within a wxpython window
Hi How to display pygame graphics within a wxpython window. I have tried the last example on http://wiki.wxpython.org/IntegratingPyGame but it opens the two separate window one for pygame one for frame. I want to create one frame that can use the pygame drawing functionality. Thanks. Sibtey
RE: [pygame] How to add Zoom functionality?
To add zoom in, I want to transform the size of the shape when we select that shape and press "crl+I" key. If the size is increased the scroll bar should be added that's why I am using 'wx'. Ok, so you drew some shapes on the screen. You also want to put in zoom in/out functionality. How do you want them to be able to zoom in? What do you want to happen when they zoom in? What is zooming in? Hi All I am using Mirra to draw some shapes on the screen and set the environment "wx" to add the scrollbar. Does any one know how to add ZOOM in and zoom out functionality? Thanks. gopal
RE: [pygame] how to add the scroll bar?
Thanks, I have tried the wxPython and got it. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ian Mallett Sent: Tuesday, February 26, 2008 8:31 PM To: pygame-users@seul.org Subject: Re: [pygame] how to add the scroll bar? You can't do it with PyGame, unless you want to hardcode it yourself. If you want to have one without making yourself, you can use wxPython. Might be easier to make it yourself, though, given the overcomplexity of wx...
[pygame] how to add the scroll bar?
Hi Does any one know how to add the scrollbar using pygame?. I am using pygame for some other type of applications and this functionality is needed to zoom the drawing on the screen. Thanks.. SibteyMehdi
[pygame] how to display a string ?
Hi All I am drawing the rectangles using pyOpenGl and pygame and want to display some string over the rectangles with different color. I have gone through the pyOpenGl references but couldn't get the way. Any one knows about the tutorial then help me out. Thanks. Sibtey
[pygame] Help
Hi All I am new to PyOpenGl and want to use 2D graphics, to create rectangle to represent some information. Is there any 2D graphics library that is supported by pygame and will be a better option instead of using PyOpenGl? Thanks, Sibtey Mehdi
