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tileflow.py
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import sys
import math
from PySide import QtCore, QtGui, QtOpenGL
try:
from OpenGL import GLU, GL
except ImportError:
app = QtGui.QApplication(sys.argv)
QtGui.QMessageBox.critical(None, "OpenGL textures",
"PyOpenGL must be installed to run this example.",
QtGui.QMessageBox.Ok | QtGui.QMessageBox.Default,
QtGui.QMessageBox.NoButton)
sys.exit(1)
class TileflowWidget(QtOpenGL.QGLWidget):
SCALE = 0.7
SPREAD_IMAGE = 0.14
FLANK_SPREAD = 0.4
VISIBLE_TILES = 10
DIRECTION = 1
def __init__(self, parent, res_list):
QtOpenGL.QGLWidget.__init__(self, parent)
self.width = 0
self.clearColor = QtCore.Qt.black
self.lastPos = QtCore.QPoint()
self.res_list = res_list
print self.res_list
self.tiles = []
self.max = 6
self.offset = 3
self.mouseDown = False
# self.width = 533
timer = QtCore.QTimer(self)
timer.timeout.connect(self.focusTile)
timer.start(20)
def minimumSizeHint(self):
return QtCore.QSize(533, 270)
def sizeHint(self):
return QtCore.QSize(533, 270)
def setClearColor(self, color):
self.clearColor = color
self.updateGL()
def initializeGL(self):
for res_path in self.res_list:
self.tiles.append(Tile(self.bindTexture(QtGui.QPixmap(res_path))))
self.first_tile = self.makeTiles()
def makeTiles(self):
ind = list_start = GL.glGenLists(len(self.res_list))
for tile in self.tiles:
texture = tile.texture
GL.glNewList(ind, GL.GL_COMPILE)
GL.glBindTexture(GL.GL_TEXTURE_2D, tile.texture)
GL.glBegin(GL.GL_QUADS)
GL.glTexCoord2d(1, 0)
GL.glVertex3d(1, -1, 0)
GL.glTexCoord2d(0, 0)
GL.glVertex3d(-1, -1, 0)
GL.glTexCoord2d(0, 1)
GL.glVertex3d(-1, 1, 0)
GL.glTexCoord2d(1, 1)
GL.glVertex3d(1, 1, 0)
GL.glEnd()
GL.glTranslatef(0, -2.0, 0)
GL.glScalef(1, -1, 1)
GL.glColor4f(1, 1, 1, 0.5)
GL.glBegin(GL.GL_QUADS)
GL.glTexCoord2d(1, 0)
GL.glVertex3d(1, -1, 0)
GL.glTexCoord2d(0, 0)
GL.glVertex3d(-1, -1, 0)
GL.glTexCoord2d(0, 1)
GL.glVertex3d(-1, 1, 0)
GL.glTexCoord2d(1, 1)
GL.glVertex3d(1, 1, 0)
GL.glEnd()
GL.glColor4f(1, 1, 1, 1)
GL.glEndList()
ind += 1
return list_start
def paintGL(self):
GL.glMatrixMode(GL.GL_MODELVIEW)
GL.glLoadIdentity()
GLU.gluLookAt(0, 0, 2, 0, 0, 0, 0, 1, 0)
GL.glDisable(GL.GL_DEPTH_TEST)
self.qglClearColor(self.clearColor)
GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT)
GL.glPushMatrix()
GL.glEnable(GL.GL_TEXTURE_2D)
GL.glEnable(GL.GL_BLEND)
GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA)
offset = self.offset
if offset <= 0:
offset = 0
if offset > len(self.res_list) - 1:
offset = len(self.res_list) - 1
mid = int(math.floor(offset + 0.5))
start_pos = mid - TileflowWidget.VISIBLE_TILES
if start_pos < 0:
start_pos = 0
end_pos = mid + TileflowWidget.VISIBLE_TILES
if end_pos > len(self.res_list):
end_pos = len(self.res_list)
for i in range(start_pos, mid)[::TileflowWidget.DIRECTION]:
self.drawTile(i, i - offset, self.tiles[i])
for i in range(mid, end_pos)[::-TileflowWidget.DIRECTION]:
self.drawTile(i, i - offset, self.tiles[i])
GL.glPopMatrix()
def focusTile(self):
if not self.mouseDown:
target = math.floor(self.offset + 0.5)
if not abs(target - self.offset) <= 0.01:
self.offset += (target - self.offset) / 3
self.updateGL()
def resizeGL(self, width, height):
self.width = width
imagew = width * 0.45 / TileflowWidget.SCALE / 2.0
imageh = height * 0.45 / TileflowWidget.SCALE / 2.0
GL.glViewport(0, 0, width, height)
ratio = float(width) / height
GL.glMatrixMode(GL.GL_PROJECTION)
GL.glLoadIdentity()
GL.glOrtho(-ratio * TileflowWidget.SCALE, ratio * TileflowWidget.SCALE, -1 * TileflowWidget.SCALE, 1 * TileflowWidget.SCALE, 1, 3)
def mousePressEvent(self, event):
self.lastPos = QtCore.QPoint(event.pos())
self.mouseDown = True
def mouseMoveEvent(self, event):
dx = event.x() - self.lastPos.x()
offset = self.offset + float(dx) * 6 / (self.width * 0.6)
if offset < 0:
self.offset = 0
elif offset > len(self.res_list) - 1:
self.offset = len(self.res_list) - 1
else:
self.offset = offset
self.updateGL()
self.lastPos = QtCore.QPoint(event.pos())
def mouseReleaseEvent(self, event):
self.mouseDown = False
def drawTile(self, position, offset, tile):
matrix = [1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0]
trans = offset * TileflowWidget.SPREAD_IMAGE
f = offset * TileflowWidget.FLANK_SPREAD
if (f > TileflowWidget.FLANK_SPREAD):
f = TileflowWidget.FLANK_SPREAD
elif (f < -TileflowWidget.FLANK_SPREAD):
f = -TileflowWidget.FLANK_SPREAD
matrix[3] = -1 * TileflowWidget.DIRECTION * f
matrix[0] = 1 - abs(f)
scale = 0.38 * matrix[0]
trans += f * 1
GL.glPushMatrix()
GL.glTranslatef(trans, 0, 0)
GL.glScalef(scale, scale, 1.0)
GL.glMultMatrixf(matrix)
GL.glCallList(self.first_tile + position)
GL.glPopMatrix()
class Tile:
def __init__(self, texture):
self.texture = texture
class Window(QtGui.QWidget):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
mainLayout = QtGui.QHBoxLayout()
res_list = ["images/side" + str(ind + 1) + ".png" for ind in range(6)]
self.glWidget = TileflowWidget(self, res_list)
mainLayout.addWidget(self.glWidget)
self.setLayout(mainLayout)
self.setWindowTitle(self.tr("Tileflow"))
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())