def _shader_from_file(self, fname_vert, fname_frag):
shader = QOpenGLShaderProgram()
shader.addShaderFromSourceFile(QOpenGLShader.Vertex, fname_vert)
shader.addShaderFromSourceFile(QOpenGLShader.Fragment, fname_frag)
shader.link()
shader.bind()
logger.debug("GLSL program log:%s", shader.log())
return shader
def _shader_from_file(self, fname_vert, fname_frag):
shader = QOpenGLShaderProgram()
shader.addShaderFromSourceFile(QOpenGLShader.Vertex, fname_vert)
shader.addShaderFromSourceFile(QOpenGLShader.Fragment, fname_frag)
shader.link()
shader.bind()
logger.debug("GLSL program log:%s", shader.log())
return shader
class TriangleUnderlayRenderer(QObject):
def __init__(self, parent=None):
super(TriangleUnderlayRenderer, self).__init__(parent)
self._shader_program = None
self._viewport_size = QSize()
self._window = None
@pyqtSlot()
def paint(self):
# TODO test on Ubuntu
# for Darwin, it's a must
gl = self._window.openglContext().versionFunctions()
if self._shader_program is None:
self._shader_program = QOpenGLShaderProgram()
self._shader_program.addShaderFromSourceFile(
QOpenGLShader.Vertex, 'shaders/OpenGL_2_1/vertex.glsl')
self._shader_program.addShaderFromSourceFile(
QOpenGLShader.Fragment, 'shaders/OpenGL_2_1/fragment.glsl')
self._shader_program.bindAttributeLocation('position', 0)
self._shader_program.bindAttributeLocation('color', 1)
self._shader_program.link()
self._shader_program.bind()
self._shader_program.enableAttributeArray(0)
self._shader_program.enableAttributeArray(1)
self._shader_program.setAttributeArray(0, positions)
self._shader_program.setAttributeArray(1, colors)
gl.glViewport(0, 0, self._viewport_size.width(),
self._viewport_size.height())
gl.glClearColor(0.5, 0.5, 0.5, 1)
gl.glDisable(gl.GL_DEPTH_TEST)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glDrawArrays(gl.GL_TRIANGLES, 0, 3)
self._shader_program.disableAttributeArray(0)
self._shader_program.disableAttributeArray(1)
self._shader_program.release()
# Restore the OpenGL state for QtQuick rendering
self._window.resetOpenGLState()
self._window.update()
def set_viewport_size(self, size):
self._viewport_size = size
def set_window(self, window):
self._window = window
def init_shaders(self):
program = QOpenGLShaderProgram(self)
if not program.addShaderFromSourceFile(QOpenGLShader.Vertex, get_resources_path("shader.vert")):
return None
if not program.addShaderFromSourceFile(QOpenGLShader.Fragment, get_resources_path("shader.frag")):
return None
if not program.link():
return None
if not program.bind():
return None
return program
def init_shaders(self):
program = QOpenGLShaderProgram(self)
if not program.addShaderFromSourceFile(
QOpenGLShader.Vertex, get_resources_path("shader.vert")):
return None
if not program.addShaderFromSourceFile(
QOpenGLShader.Fragment, get_resources_path("shader.frag")):
return None
if not program.link():
return None
if not program.bind():
return None
return program
class ModelRenderer(QObject):
"""
The ModelRenderer wraps an opengl context so you can draw models to it. Currently supports blockmodels.
You need: an opengl surface, an opengl context and a workspace instance.
"""
def __init__(self, workspace, surface: QSurface):
super().__init__()
self.surf = surface
prof = QOpenGLVersionProfile()
prof.setVersion(2, 0)
self.vao = GL.glGenVertexArrays(1)
self.vbo, self.vbo2 = GL.glGenBuffers(2)
self.texture = -1
self.current_model: BlockModel = None
self.workspace = workspace
self.array1, array2 = None, None
self.shader = QOpenGLShaderProgram()
self.shader.addShaderFromSourceFile(QOpenGLShader.Vertex,
"shader/block.vertex.glsl")
self.shader.addShaderFromSourceFile(QOpenGLShader.Fragment,
"shader/block.fragment.glsl")
self.shader.link()
self.proj_mat = glm.perspective(
1.57,
self.surf.size().width() / self.surf.size().height(), 0.1, 100)
self.texture = GL.glGenTextures(1)
def set_workspace(self, workspace):
self.workspace = workspace
def setup_data_for_block_model(self, model: BlockModel):
"""
Setup the vbo & texture for a block model
todo: optimize for repeats
You probably should call render after using this function
:param model: the blockmodel to setup for
"""
self.current_model = model
print(self.workspace)
atlas = model.create_model_atlas(self.workspace)
GL.glBindTexture(GL.GL_TEXTURE_2D, self.texture)
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER,
GL.GL_NEAREST)
GL.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER,
GL.GL_NEAREST)
GL.glTexImage2D(GL.GL_TEXTURE_2D, 0, GL.GL_RGBA, atlas.size[0],
atlas.size[1], 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE,
atlas.data)
verts, uvs = model.compile_to_vertex_list(atlas)
verts = list(map(lambda x: list(x), verts))
uvs = list(map(lambda x: list(x), uvs))
GL.glBindVertexArray(self.vao)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.vbo)
self.array1 = np.array(verts, dtype=np.float32).ravel()
self.array2 = np.array(uvs, dtype=np.float32).ravel()
GL.glBufferData(GL.GL_ARRAY_BUFFER, self.array1.size * 4, self.array1,
GL.GL_DYNAMIC_DRAW)
GL.glEnableVertexAttribArray(0)
GL.glEnableVertexAttribArray(1)
GL.glVertexAttribPointer(0, 4, GL.GL_FLOAT, GL.GL_FALSE, 0,
ctypes.c_void_p(0))
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.vbo2)
GL.glBufferData(GL.GL_ARRAY_BUFFER, self.array1.size * 4, self.array2,
GL.GL_DYNAMIC_DRAW)
GL.glVertexAttribPointer(1, 2, GL.GL_FLOAT, GL.GL_FALSE, 0,
ctypes.c_void_p(0))
GL.glBindVertexArray(0)
self.array_size = len(verts)
self.array = verts
def _plumb_shader_for(self, proj_view: glm.mat4, model_transform):
self.shader.bind()
GL.glUniformMatrix4fv(1, 1, GL.GL_FALSE, glm.value_ptr(proj_view))
GL.glUniformMatrix4fv(0, 1, GL.GL_FALSE,
glm.value_ptr(model_transform))
print(model_transform * self.array[0])
GL.glBindTexture(GL.GL_TEXTURE_2D, self.texture)
def draw_loaded_model(self, view_matrix, transform_name, proj=None):
"""
Draw the loaded model with transforms and view
:param proj: projection matrix for doing ortho
:param view_matrix: View matrix (y should be up)
:param transform_name: Transform name in model
"""
if self.current_model is None:
raise ValueError("No model is loaded!")
if proj is None:
proj = self.proj_mat
print(self.current_model.transforms[transform_name])
self._plumb_shader_for(proj * view_matrix,
self.current_model.transforms[transform_name])
GL.glBindVertexArray(self.vao)
GL.glEnable(GL.GL_DEPTH_TEST)
GL.glDrawArrays(GL.GL_TRIANGLES, 0, len(self.array))
def resize(self, width, height):
"""
Resize the modelRenderer to acommodate for differing aspect ratios
"""
self.proj_mat = glm.perspective(1.57, width / height, 0.1, 100)
class QtGL2Material(Material):
def __init__(self, renderer):
super().__init__()
self._gl = renderer._gl
self._shader_program = None
self._uniform_indices = {}
self._attribute_indices = {}
self._uniform_values = {}
self._bound = False
self._textures = {}
def loadVertexShader(self, file):
if not self._shader_program:
self._shader_program = QOpenGLShaderProgram()
self._shader_program.addShaderFromSourceFile(QOpenGLShader.Vertex, file)
def loadFragmentShader(self, file):
if not self._shader_program:
self._shader_program = QOpenGLShaderProgram()
self._shader_program.addShaderFromSourceFile(QOpenGLShader.Fragment, file)
def build(self):
if not self._shader_program:
Logger.log("e", "No shader sources loaded")
return
self._shader_program.link()
def setUniformValue(self, name, value, **kwargs):
if not self._shader_program:
return
cache = True
if "cache" in kwargs:
cache = kwargs["cache"]
if name not in self._uniform_indices:
self._uniform_indices[name] = self._shader_program.uniformLocation(name)
uniform = self._uniform_indices[name]
if uniform == -1:
return
if cache:
self._uniform_values[uniform] = value
if self._bound:
self._setUniformValueDirect(uniform, value)
def setUniformTexture(self, name, file):
if not self._shader_program:
return
if name not in self._uniform_indices:
self._uniform_indices[name] = self._shader_program.uniformLocation(name)
index = self._uniform_indices[name]
texture = QOpenGLTexture(QImage(file).mirrored())
texture.setMinMagFilters(QOpenGLTexture.Linear, QOpenGLTexture.Linear)
self._textures[index] = texture
self._uniform_values[index] = 1
if self._bound:
texture = self._textures[index]
texture.bind()
self._setUniformValueDirect(index, texture.textureId())
def enableAttribute(self, name, type, offset, stride = 0):
if not self._shader_program:
return
self.bind()
if name not in self._attribute_indices:
self._attribute_indices[name] = self._shader_program.attributeLocation(name)
attribute = self._attribute_indices[name]
if attribute == -1:
return
if type is "int":
self._shader_program.setAttributeBuffer(attribute, self._gl.GL_INT, offset, 1, stride)
elif type is "float":
self._shader_program.setAttributeBuffer(attribute, self._gl.GL_FLOAT, offset, 1, stride)
elif type is "vector2f":
self._shader_program.setAttributeBuffer(attribute, self._gl.GL_FLOAT, offset, 2, stride)
elif type is "vector3f":
self._shader_program.setAttributeBuffer(attribute, self._gl.GL_FLOAT, offset, 3, stride)
elif type is "vector4f":
self._shader_program.setAttributeBuffer(attribute, self._gl.GL_FLOAT, offset, 4, stride)
self._shader_program.enableAttributeArray(attribute)
def disableAttribute(self, name):
if not self._shader_program:
return
if name not in self._attribute_indices:
return
self._shader_program.disableAttributeArray(self._attribute_indices[name])
def bind(self):
if not self._shader_program or not self._shader_program.isLinked():
return
if self._bound:
return
self._bound = True
self._shader_program.bind()
for uniform in self._uniform_values:
if uniform in self._textures:
texture = self._textures[uniform]
texture.bind()
self._setUniformValueDirect(uniform, 0)
else:
self._setUniformValueDirect(uniform, self._uniform_values[uniform])
def release(self):
if not self._shader_program or not self._bound:
return
for texture in self._textures.values():
texture.release()
self._bound = False
self._shader_program.release()
def _matrixToQMatrix4x4(self, m):
return QMatrix4x4(m.at(0,0), m.at(0, 1), m.at(0, 2), m.at(0, 3),
m.at(1,0), m.at(1, 1), m.at(1, 2), m.at(1, 3),
m.at(2,0), m.at(2, 1), m.at(2, 2), m.at(2, 3),
m.at(3,0), m.at(3, 1), m.at(3, 2), m.at(3, 3))
def _setUniformValueDirect(self, uniform, value):
if type(value) is Vector:
self._shader_program.setUniformValue(uniform, QVector3D(value.x, value.y, value.z))
elif type(value) is Matrix:
self._shader_program.setUniformValue(uniform, self._matrixToQMatrix4x4(value))
elif type(value) is Color:
self._shader_program.setUniformValue(uniform, QColor(value.r * 255, value.g * 255, value.b * 255, value.a * 255))
elif type(value) is list and len(value) is 2:
self._shader_program.setUniformValue(uniform, QVector2D(value[0], value[1]))
elif type(value) is list and len(value) is 3:
self._shader_program.setUniformValue(uniform, QVector3D(value[0], value[1], value[2]))
elif type(value) is list and len(value) is 4:
self._shader_program.setUniformValue(uniform, QVector4D(value[0], value[1], value[2], value[3]))
else:
self._shader_program.setUniformValue(uniform, value)
class MainWindow(QMainWindow, Ui_MainWindow):
def __init__(self, processor, df, parent=None):
super().__init__(parent)
self.parent = parent
self.processor = processor
# Data
self.df = df
# UI
self.setupUi(self)
self.setupControls()
self.keyPressEvent = self.keyPressed
self.mouseMoveEvent = self.mouseMoved
# Control & Display
self.mouse_grabbed = False
self.camera_pos = QVector3D(0.5, 0.5, -2) # Start camera position
self.center = QVector3D(0.5, 0, 0.5) # Center of object
self.rot_center = QVector3D(0.5, 0.5, 0.5) # Center of rotation
self.camera_rot = QVector3D(0, 0, 1) # Camera rotation
self.scale_vec = QVector3D(1, 1, 1) # Object scale
self.real_prop = processor.get_real_scaling() # val to lat
self.light_pos = QVector3D(self.xLightSpinBox.value(),
self.yLightSpinBox.value(),
self.zLightSpinBox.value())
self.ambient = self.ambientSlider.value() / 100
self.diffuse = self.diffuseSlider.value() / 100
self.alpha = self.alphaSlider.value() / 100 # Transparency
# Drawing
self.normals = []
self.colors = []
self.coords_array = []
# !> len(self.normals) == len(self.colors) == len(self.coords_array)
self.update_light = False # Update for light is needed
self.update_buffer = False # Update for whole buffer is needed
self.show_grid = self.gridCheckBox.isChecked()
self.show_contour = self.contourCheckBox.isChecked()
self.contour_levels = self.contourLevelSpinBox.value()
self.show_light_lines = True
self.grid_freq = 10
self.grid_color = QVector4D(1, 1, 1, 1)
self.contour_color = QVector4D(1, 1, 1, 1)
self.light_line_color = QVector4D(1, 0.6, 0, 1)
self.prepareScene()
self.updateUi()
self.shaders = QOpenGLShaderProgram()
self.openGLWidget.initializeGL = self.initializeGL
self.openGLWidget.paintGL = self.paintGL
def updateUi(self):
"""Set up custom widgets & positions"""
self.splitDockWidget(self.displayDockWidget, self.elevationDockWidget,
Qt.Vertical)
self.splitDockWidget(self.elevationDockWidget, self.displayDockWidget,
Qt.Vertical)
self.tabifyDockWidget(self.elevationDockWidget, self.minimapDockWidget)
self.tabifyDockWidget(self.displayDockWidget, self.lightDockWidget)
self.tabifyDockWidget(self.projDockWidget, self.additionalDockWidget)
self.tabifyDockWidget(self.elevationDockWidget, self.cameraDockWidget)
self.lightDockWidget.raise_()
self.additionalDockWidget.raise_()
self.elevationDockWidget.raise_()
self.elevationWidget = ElevationGraphWidget(
self.processor.min_val,
self.processor.max_val,
self.processor.denormalizeValue(self.camera_pos.y()),
width=240,
height=100)
self.minimapWidget = MinimapGraphWidget(self.processor,
self.camera_pos,
self.camera_rot,
width=240,
height=100)
self.elevationWidgetLayout.addWidget(self.elevationWidget)
self.minimapLayout.addWidget(self.minimapWidget)
self.mapDockWidgetControls()
self.actionOpenAnother.triggered.connect(self.onOpenAnother)
def onOpenAnother(self):
"""Open another GeoTIFF file"""
self.parent.show()
self.hide()
self.deleteLater()
def mapDockWidgetControls(self):
"""Show/hide dockwidgets via corresponding actions"""
self.dock_widgets = [
self.lightDockWidget, self.cameraDockWidget,
self.additionalDockWidget, self.minimapDockWidget,
self.displayDockWidget, self.projDockWidget,
self.elevationDockWidget
]
self.dock_actions = [
self.actionShowLightSourceDW, self.actionShowCameraDW,
self.actionShowAdditionalDW, self.actionShowMinimapDW,
self.actionShowDisplayDW, self.actionShowProjectionDW,
self.actionShowElevationDW
]
for dock_widget, action in zip(self.dock_widgets, self.dock_actions):
def wrapper(action):
def dock_widget_close_event(event):
action.setChecked(False)
event.accept()
return dock_widget_close_event
dock_widget.closeEvent = wrapper(action)
action.triggered.connect(dock_widget.setVisible)
# ==================== PREPARATION ====================
def prepareScene(self):
"""Prepare the data for bufferization"""
self.coords_array = []
self.colors = []
self.normals = []
polygons, normals, colors = self.getMapPolygons()
self.map_data = self.preparePolygons(polygons, normals, colors)
# self.normal_data = self.prepareNormalLines(polygons, normals, colors)
polygons, normals, colors = self.getLightSourceCoords()
self.light_data = self.preparePolygons(polygons, normals, colors)
if self.show_light_lines:
lines, line_colors = self.getLightLines()
self.light_lines_data = self.prepareLines(lines, line_colors)
if self.show_grid:
lines, line_colors = self.getGrid()
self.grid_data = self.prepareLines(lines, line_colors)
if self.show_contour:
self.contour_data = self.getContour()
# POLYGONS
def getLightSourceCoords(self):
polygons = np.array([((0, 0, 0), (0, 1, 0), (1, 1, 0), (1, 0, 0)),
((0, 0, 1), (0, 1, 1), (1, 1, 1), (1, 0, 1)),
((0, 0, 0), (0, 0, 1), (1, 0, 1), (1, 0, 0)),
((0, 1, 0), (0, 1, 1), (1, 1, 1), (1, 1, 0)),
((0, 0, 0), (0, 0, 1), (0, 1, 1), (0, 1, 0)),
((1, 0, 0), (1, 0, 1), (1, 1, 1), (1, 1, 0))])
normals = [(0, 0, -1), (0, 0, 1), (0, -1, 0), (0, 1, 0), (-1, 0, 0),
(1, 0, 0)]
normals_vec = []
[[
normals_vec.append(QVector3D(*normals[i]))
for _ in range(len(polygons[i]))
] for i in range(len(polygons))]
center = np.array(
(self.light_pos.x(), self.light_pos.y(), self.light_pos.z()))
delta = np.array((0.5, 0.5, 0.5))
polygons = [[(p - delta) * 0.05 + center for p in side]
for side in polygons]
colors = []
[
colors.append(QVector4D(1, 153 / 255, 0, 1) * self.diffuse)
for _ in range(len(normals_vec))
]
return polygons, normals_vec, colors
def getMapPolygons(self):
polygons, normals, colors = [], [], []
for polygon, normal in self.processor.polygon_generator(self.df):
polygons.append(self.swapPoints(polygon))
[
normals.append(QVector3D(*self.swapPoint(*normal)))
for _ in polygon
]
[colors.append(self.getColorByValue(val)) for x, y, val in polygon]
return polygons, normals, colors
def getColorByValue(self, value):
"""Get QVector4D-color from green (value == 0) to red (value == 1)
:param value: 0 - 1
"""
hue = 120 * (1 - value) / 360
color = QColor.fromHslF(hue, 1, 0.5)
color_vec = QVector4D(color.redF(), color.greenF(), color.blueF(), 0.5)
return color_vec
def swapPoint(self, lon, lat, value):
return lon, value, lat
def swapPoints(self, polygon):
return [(lon, value, lat) for lon, lat, value in polygon]
def prepareNormalLines(self, polygons, normals, colors):
"""Normal lines for each polygon.
Debug only
"""
norm_i = 0
start = len(self.coords_array)
for polygon in polygons:
point = polygon[0]
normal = normals[norm_i]
# color = colors[norm_i]
color = QVector4D(1, 1, 1, 1)
point_2 = QVector3D(*point) + normal * 0.04
point_2 = (point_2.x(), point_2.y(), point_2.z())
self.prepareLine((point, point_2), [color] * 2)
norm_i += len(polygon)
end = len(self.coords_array)
return start, end
def preparePolygons(self, polygons, normals, colors, start_index=None):
"""Prepare polygons for bufferization
:param polygons: a list like [(p11, p12, ...), (p21, p22, ...)]
:param normals: normals with number of normals equal to points
:param colors: colors for each point
:param start_index: if None, start at the end of each array.
Otherwise, overwrite
"""
assert len(normals) == len(colors)
coords_array = []
[[coords_array.append(list(p)) for p in polygon]
for polygon in polygons]
start = len(self.coords_array)
if start_index is None:
self.coords_array += coords_array
self.normals += normals
self.colors += colors
else:
for i, j in enumerate(
range(start_index, start_index + len(coords_array))):
self.coords_array[j] = coords_array[i]
self.normals[j] = normals[i]
self.colors[j] = colors[i]
end = len(self.coords_array)
return start, end
# LINES
def getGrid(self):
assert self.processor.min_lat != self.processor.max_lat \
and self.processor.min_val != self.processor.max_val
value = self.processor.min_val - \
(self.processor.max_val - self.processor.min_val) * 0.1
lines = []
for lat in np.linspace(self.processor.min_lat, self.processor.max_lat,
self.grid_freq):
line = ((self.processor.min_lon, lat, value),
(self.processor.max_lon, lat, value))
lines.append(line)
for lon in np.linspace(self.processor.min_lon, self.processor.max_lon,
self.grid_freq):
line = ((lon, self.processor.min_lat, value),
(lon, self.processor.max_lat, value))
lines.append(line)
# lines.append(((self.min_lon, self.min_lat, self.min_val),
# (self.min_lon, self.min_lat, self.max_val)))
lines = [
self.swapPoints(self.processor.normalizePoints(line))
for line in lines
]
line_colors = [(self.grid_color, self.grid_color) for _ in lines]
return lines, line_colors
def getContour(self):
lev_lines = self.processor.get_contour(levels=self.contour_levels)
contour = []
for level, line in lev_lines:
line = [(self.processor.normalizeLon(lon),
self.processor.normalizeValue(level + 10),
self.processor.normalizeLat(lat)) for lon, lat in line]
colors = [self.contour_color] * len(line)
contour.append(self.prepareLine(line, colors))
return contour
def getLightLines(self):
if self.processor.max_val == self.processor.min_val:
v = 0
else:
v = self.processor.normalizeValue(
self.processor.min_val -
(self.processor.max_val - self.processor.min_val) * 0.1)
lines = (((self.light_pos.x(), v, -100), (self.light_pos.x(), v, 100)),
((-100, v, self.light_pos.z()), (100, v, self.light_pos.z())),
((self.light_pos.x(), v, self.light_pos.z()),
(self.light_pos.x(), self.light_pos.y(),
self.light_pos.z())))
line_colors = [(self.light_line_color, self.light_line_color)
for _ in lines]
return lines, line_colors
def prepareLines(self, lines, line_colors, start_index=None):
"""Prepare lines for bufferization
:param lines: list like one for polygons
:param line_colors: list of colors of each line
:param start_index: start index
"""
assert len(lines) == len(line_colors)
if start_index is None:
data = [None] * len(lines)
else:
data = []
sum_len = 0
for line in lines:
data.append(start_index + sum_len)
sum_len += len(line)
result = [
self.prepareLine(line, colors, datum)
for line, colors, datum in zip(lines, line_colors, data)
]
return result[0][0], result[-1][1]
def prepareLine(self, line, colors, start_index=None):
assert len(line) == len(colors)
if start_index is None:
start = len(self.coords_array)
self.coords_array += line
self.colors += colors
self.normals += [QVector3D(0, 1, 0)] * len(line)
end = len(self.coords_array)
else:
start = start_index
for i, j in enumerate(range(start_index, start_index + len(line))):
self.coords_array[j] = line[i]
self.colors[j] = colors[i]
end = start_index + len(line)
return start, end
# ==================== SCENE PREPARATION ====================
def initializeGL(self):
GL.glClearColor(0.1, 0.1, 0.1, 1.0)
GL.glEnableClientState(GL.GL_VERTEX_ARRAY)
self.setUpShaders()
self.initVertexArrays()
def setUpShaders(self):
self.shaders.addShaderFromSourceFile(
QOpenGLShader.Vertex, resource_path('shaders/shader.vert'))
self.shaders.addShaderFromSourceFile(
QOpenGLShader.Fragment, resource_path('shaders/shader.frag'))
self.shaders.link()
self.shaders.bind()
def initVertexArrays(self):
"""Init buffers"""
assert len(self.coords_array) == len(self.colors) == len(self.normals)
GL.glVertexPointer(3, GL.GL_FLOAT, 0, self.coords_array)
self.shaders.setAttributeArray("v_color", self.colors)
self.shaders.enableAttributeArray("v_color")
self.shaders.setAttributeArray("v_normal", self.normals)
self.shaders.enableAttributeArray("v_normal")
# ==================== UPDATING STUFF ====================
def updateGL(func):
def wrapper(self, *args, **kwargs):
res = func(self, *args, **kwargs)
self.openGLWidget.update()
return res
return wrapper
def updateCameraInfo(func):
"""A decorator to update camera widgets after excution
"""
def wrapper(self, *args, **kwargs):
res = func(self, *args, **kwargs)
coef = 1 if not self.realPropCheckBox.isChecked() \
else self.real_prop
self.elevationWidget.updatePos(
self.processor.denormalizeValue(self.camera_pos.y() /
(self.scale_vec.y()) * coef))
self.minimapWidget.updateCameraInfo(
self.camera_pos * self.scale_vec, self.camera_rot)
return res
return wrapper
def updateLightData(self):
"""Update parts of buffer used to display the light source"""
polygons, normals, colors = self.getLightSourceCoords()
self.preparePolygons(polygons, normals, colors, self.light_data[0])
lines, colors = self.getLightLines()
self.prepareLines(lines, colors, self.light_lines_data[0])
GL.glVertexPointer(3, GL.GL_FLOAT, 0, self.coords_array)
self.update_light = False
def updateBuffer(self):
"""Update the whole buffer"""
self.prepareScene()
self.initVertexArrays()
self.update_buffer = False
# ==================== ACTUAL DRAWING ====================
def paintGL(self):
self.loadScene()
if self.update_light:
self.updateLightData()
if self.update_buffer:
self.updateBuffer()
self.updateMatrices()
self.updateParams()
self.drawScene()
def loadScene(self):
width, height = self.openGLWidget.width(), self.openGLWidget.height()
view = max(width, height)
GL.glViewport(int((width - view) / 2), int((height - view) / 2), view,
view)
GL.glPolygonMode(GL.GL_FRONT_AND_BACK, GL.GL_FILL)
GL.glEnable(GL.GL_BLEND)
GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA)
GL.glEnable(GL.GL_DEPTH_TEST)
GL.glDepthFunc(GL.GL_LEQUAL)
def updateMatrices(self):
"""Update projection matrices"""
proj = QMatrix4x4()
coef = 0.01
center_x = 0
center_y = 0
projection = (-1 * coef + center_x, 1 * coef + center_x,
-1 * coef + center_y, 1 * coef + center_y, 2.8 * coef,
20)
if self.perspectiveRadioButton.isChecked():
proj.frustum(*projection)
else:
proj.ortho(*projection)
modelview = QMatrix4x4()
modelview.lookAt(self.camera_pos, self.camera_pos + self.camera_rot,
QVector3D(0, 1, 0))
self.shaders.setUniformValue("ModelViewMatrix", modelview)
self.shaders.setUniformValue("MVP", proj * modelview)
def updateParams(self):
"""Update light, alpha and scaling parameters"""
self.shaders.setUniformValue("LightPos", self.light_pos)
self.shaders.setUniformValue("ambientStrength", self.ambient)
self.shaders.setUniformValue("diffuseStrength", self.diffuse)
self.shaders.setUniformValue("alpha", self.alpha)
self.shaders.setUniformValue("center", self.center)
self.shaders.setUniformValue("scale", self.scale_vec)
def drawScene(self):
"""Paint all the prepared data"""
GL.glClear(GL.GL_COLOR_BUFFER_BIT)
self.shaders.setUniformValue('scaleEnabled', False)
self.shaders.setUniformValue('phongModel', False)
self.drawPreparedPolygons(*self.light_data)
if self.show_light_lines:
self.drawPreparedLines(*self.light_lines_data)
self.shaders.setUniformValue('scaleEnabled', True)
if self.show_grid:
self.drawPreparedLines(*self.grid_data)
# self.drawPreparedLines(*self.normal_data)
self.shaders.setUniformValue('phongModel', True)
self.drawPreparedPolygons(*self.map_data)
if self.show_contour:
self.shaders.setUniformValue('phongModel', False)
self.drawPreparedLineStrips(self.contour_data)
def drawPreparedPolygons(self, start, end):
for i in range(start, end, 4):
GL.glDrawArrays(GL.GL_POLYGON, i, 4)
def drawPreparedLines(self, start, end):
GL.glDrawArrays(GL.GL_LINES, start, end - start)
def drawPreparedLineStrips(self, arr):
for start, end in arr:
GL.glDrawArrays(GL.GL_LINE_STRIP, start, end - start)
# ==================== CONTROLS ====================
def setupControls(self):
"""Connect controls to this class' methods"""
# Camera
self.moveCameraUp.clicked.connect(lambda: self.moveCamera(az=1))
self.moveCameraDown.clicked.connect(lambda: self.moveCamera(az=-1))
self.moveCameraLeft.clicked.connect(lambda: self.moveCamera(pol=1))
self.moveCameraRight.clicked.connect(lambda: self.moveCamera(pol=-1))
self.moveCameraForward.clicked.connect(lambda: self.moveCamera(z=-1))
self.moveCameraBackward.clicked.connect(lambda: self.moveCamera(z=1))
# Scaling
self.xScaleSpinBox.valueChanged.connect(lambda x: self.scaleView(x=x))
self.yScaleSpinBox.valueChanged.connect(lambda y: self.scaleView(y=y))
self.zScaleSpinBox.valueChanged.connect(lambda z: self.scaleView(z=z))
self.realPropCheckBox.stateChanged.connect(
lambda: self.scaleView(y=self.yScaleSpinBox.value()))
# Light
self.ambientSlider.valueChanged.connect(
lambda ambient: self.setLight(ambient=ambient / 100))
self.diffuseSlider.valueChanged.connect(
lambda diffuse: self.setLight(diffuse=diffuse / 100))
self.xLightSpinBox.valueChanged.connect(lambda x: self.setLight(x=x))
self.yLightSpinBox.valueChanged.connect(lambda y: self.setLight(y=y))
self.zLightSpinBox.valueChanged.connect(lambda z: self.setLight(z=z))
# Display
self.gridCheckBox.toggled.connect(lambda g: self.setGrid(show=g))
self.contourCheckBox.toggled.connect(lambda c: self.setContour(show=c))
self.contourLevelSpinBox.valueChanged.connect(
lambda l: self.setContour(levels=l))
# Misc
self.alphaSlider.valueChanged.connect(
lambda alpha: self.setDisplay(alpha / 100))
self.actionGrabKeyboard.toggled.connect(self.toggleGrabKeyboard)
self.actionGrabMouse.toggled.connect(self.toggleGrabMouse)
self.orhogonalRadioButton.clicked.connect(self.openGLWidget.update)
self.perspectiveRadioButton.clicked.connect(self.openGLWidget.update)
self.openGLWidget.mousePressEvent \
= lambda event: self.actionGrabMouse.setChecked(True)
def keyPressed(self, event):
key = event.key()
camera_dict = {
Qt.Key_W: {
'z': 1
},
Qt.Key_S: {
'z': -1
},
Qt.Key_A: {
'x': -1
},
Qt.Key_D: {
'x': 1
},
Qt.Key_Z: {
'y': 1
},
Qt.Key_X: {
'y': -1
},
Qt.Key_Up: {
'az': 1
},
Qt.Key_Down: {
'az': -1
},
Qt.Key_Left: {
'pol': 1
},
Qt.Key_Right: {
'pol': -1
}
}
self.moveCamera(**camera_dict.get(key, {}))
if key == Qt.Key_Escape:
self.actionGrabMouse.setChecked(False)
self.actionGrabKeyboard.setChecked(False)
def mouseMoved(self, event):
az_sensivity = 0.03
pol_sensivity = 0.03
if self.mouse_grabbed:
delta = event.globalPos() - self.mouse_center
QCursor.setPos(self.mouse_center)
if event.buttons() == Qt.RightButton:
self.moveCameraAroundCenter(az=delta.y() * az_sensivity,
pol=delta.x() * pol_sensivity)
else:
self.moveCamera(az=delta.y() * az_sensivity,
pol=delta.x() * pol_sensivity)
else:
super().mouseMoveEvent(event)
def getRotVec(self):
rot_matr = QMatrix4x4()
rot_matr.rotate(-90, 0, 1, 0)
rot_vec = QVector3D(self.camera_rot)
rot_vec.setY(0)
rot_vec = rot_matr * rot_vec
return rot_vec
@updateGL
@updateCameraInfo
def moveCamera(self, az=0, pol=0, x=0, y=0, z=0):
move_coef = 0.1
rot_coef = 2
rot_vec = self.getRotVec()
if az != 0 or pol != 0:
rot_matr = QMatrix4x4()
rot_matr.rotate(rot_coef * az, rot_vec)
rot_matr.rotate(rot_coef * pol, 0, 1, 0)
self.camera_rot = rot_matr * self.camera_rot
if z:
self.camera_pos += move_coef * self.camera_rot * z
if x:
self.camera_pos += rot_vec * move_coef * x
if y:
self.camera_pos.setY(self.camera_pos.y() + y * move_coef)
@updateGL
@updateCameraInfo
def moveCameraAroundCenter(self, az=0, pol=0):
rot_coef = 4
rot_vec = self.getRotVec()
rot_matr = QMatrix4x4()
rot_matr.rotate(rot_coef * az, rot_vec)
rot_matr.rotate(rot_coef * pol, 0, 1, 0)
rot_center = self.rot_center * self.scale_vec
self.camera_pos -= rot_center
self.camera_pos = rot_matr * self.camera_pos
self.camera_pos += rot_center
self.camera_rot = -self.camera_pos + rot_center
@updateGL
@updateCameraInfo
def scaleView(self, x=None, y=None, z=None):
if x:
self.scale_vec.setX(x)
if y:
if self.realPropCheckBox.isChecked():
self.scale_vec.setY(y * self.real_prop)
else:
self.scale_vec.setY(y)
if z:
self.scale_vec.setZ(z)
@updateGL
def setLight(self, x=None, y=None, z=None, ambient=None, diffuse=None):
if x:
self.light_pos.setX(x)
if y:
self.light_pos.setY(y)
if z:
self.light_pos.setZ(z)
if ambient:
self.ambient = ambient
if diffuse:
self.diffuse = diffuse
self.update_light = True
@updateGL
def setDisplay(self, alpha=None, invisible=None):
if invisible:
self.invisible = invisible
if alpha:
self.alpha = alpha
@updateGL
def setGrid(self, show):
self.show_grid = show
self.update_buffer = True
@updateGL
def setContour(self, show=None, levels=None):
if show is not None:
self.show_contour = show
self.update_buffer = True
if levels is not None:
self.contour_levels = levels
if self.show_contour:
self.update_buffer = True
def toggleGrabKeyboard(self, grab: bool):
if grab:
self.grabKeyboard()
else:
self.releaseKeyboard()
def toggleGrabMouse(self, grab: bool):
self.actionGrabKeyboard.setChecked(grab)
self.mouse_grabbed = grab
if grab:
self.setCursor(Qt.BlankCursor)
self.mouse_center = self.getMouseCenter()
QCursor.setPos(self.mouse_center)
self.setMouseTracking(True)
self.grabMouse()
else:
self.setCursor(Qt.ArrowCursor)
self.setMouseTracking(False)
self.releaseMouse()
def getMouseCenter(self):
w, h = self.openGLWidget.width(), self.openGLWidget.height()
local_center = QPoint(w / 2, h / 2)
global_center = self.mapToGlobal(self.openGLWidget.pos()) \
+ local_center
return global_center
class TriangleUnderlayRenderer(QObject):
def __init__(self, parent=None):
super(TriangleUnderlayRenderer, self).__init__(parent)
self._shader_program = None
self._viewport_size = QSize()
self._window = None
self._camera = Camera()
self._perspective_projection_matrix = perspective_projection(
45.0, 4.0 / 3.0, 0.001, 100.0)
self._orthographic_projection_matrix = orthographic_projection(
640.0, 480.0, 0.001, 100.0)
self._model_matrix = np.identity(4)
self._projection_type = 0
self._projection_matrix = self._perspective_projection_matrix
self._theta = 0.0
def set_theta(self, theta):
self._theta = theta
# around y axis
def build_rotation_matrix(self):
m = np.identity(4)
m[0][0] = np.cos(np.radians(self._theta))
m[0][2] = np.sin(np.radians(self._theta))
m[2][0] = -np.sin(np.radians(self._theta))
m[2][2] = np.cos(np.radians(self._theta))
return m
@pyqtSlot(int)
def setProjectionType(self, t):
if t != self._projection_type:
self._projection_type = t
@pyqtSlot()
def paint(self):
# for Darwin, it's a must
if pf.uname().system == 'Darwin':
global GL
GL = self._window.openglContext().versionFunctions()
w = self._viewport_size.width()
h = self._viewport_size.height()
GL.glViewport(0, 0, int(w), int(h))
if self._shader_program is None:
self._shader_program = QOpenGLShaderProgram()
self._shader_program.addShaderFromSourceFile(
QOpenGLShader.Vertex, 'shaders/OpenGL_2_1/vertex.glsl')
self._shader_program.addShaderFromSourceFile(
QOpenGLShader.Fragment, 'shaders/OpenGL_2_1/fragment.glsl')
self._shader_program.bindAttributeLocation('position', 0)
self._shader_program.bindAttributeLocation('color', 1)
self._shader_program.link()
self._shader_program.bind()
self._shader_program.enableAttributeArray(0)
self._shader_program.enableAttributeArray(1)
self._shader_program.setAttributeArray(0, positions)
self._shader_program.setAttributeArray(1, colors)
if self._projection_type == 0:
self._projection_matrix = self._perspective_projection_matrix
elif self._projection_type == 1:
self._projection_matrix = self._orthographic_projection_matrix
self._model_matrix = self.build_rotation_matrix()
self._shader_program.setUniformValue(
'model_matrix', QMatrix4x4(self._model_matrix.flatten().tolist()))
self._shader_program.setUniformValue(
'view_matrix',
QMatrix4x4(self._camera.get_view_matrix().flatten().tolist()))
self._shader_program.setUniformValue(
'projection_matrix',
QMatrix4x4(self._projection_matrix.flatten().tolist()))
GL.glClearColor(0.2, 0.2, 0.2, 1)
GL.glEnable(GL.GL_DEPTH_TEST)
GL.glClear(GL.GL_COLOR_BUFFER_BIT)
GL.glDrawArrays(GL.GL_TRIANGLES, 0, 3)
self._shader_program.disableAttributeArray(0)
self._shader_program.disableAttributeArray(1)
self._shader_program.release()
# Restore the OpenGL state for QtQuick rendering
self._window.resetOpenGLState()
self._window.update()
def set_viewport_size(self, size):
self._viewport_size = size
def set_window(self, window):
self._window = window
def set_projection_matrix(self):
# Need to be set every time we change the size of the window
self._perspective_projection_matrix = perspective_projection(
45.0,
self._viewport_size.width() / self._viewport_size.height(), 0.001,
100.0)
self._orthographic_projection_matrix = orthographic_projection(
self._viewport_size.width(), self._viewport_size.height(), 0.001,
100.0)
class ModelUnderlayRenderer(QObject):
def __init__(self, parent=None):
super(ModelUnderlayRenderer, self).__init__(parent)
self._cube_shader = None
self._sphere_shader = None
self._viewport_size = QSize()
self._window = None
self._camera = Camera()
self._perspective_projection_matrix = None
self._orthographic_projection_matrix = None
self._model_matrix = np.identity(4)
self._projection_type = 0
self._projection_matrix = perspective_projection(
45.0, 640.0 / 480.0, 0.001, 1000.0)
self._index_buffer = -1
# keep track of the objects in the scene
self._cube_model = Cube()
self._sphere_model = Sphere()
self._models = dict()
self._models[self._cube_model] = []
self._models[self._sphere_model] = []
@pyqtSlot()
def paint(self):
# for Darwin, it's a must
if pf.uname().system == 'Darwin':
global GL
GL = self._window.openglContext().versionFunctions()
w = self._viewport_size.width()
h = self._viewport_size.height()
GL.glViewport(0, 0, int(w), int(h))
GL.glClearColor(0.1, 0.1, 0.1, 1)
GL.glEnable(GL.GL_DEPTH_TEST)
GL.glClear(GL.GL_COLOR_BUFFER_BIT)
GL.glClear(GL.GL_DEPTH_BUFFER_BIT)
#
# vertices_block = np.vstack((self._cube_model.vertices, self._sphere_model.vertices))
# colors_block = np.vstack((self._cube_model.colors, self._sphere_model))
#
# if len(self._objects) > 1:
# for v in self._vertices[1:]:
# vertices_block = np.vstack((vertices_block, v))
# for idx, c in enumerate(self._colors[1:]):
# if not c:
# c = [[0.6, 0.6, 0.7] for i in range(len(self._vertices[idx]))]
# colors_block = np.vstack((colors_block, c))
# for i in self._indices[1:]:
# indices_block = np.hstack((indices_block, i))
view_matrix = np.identity(4)
view_matrix[2][3] = -30
if self._cube_shader is None:
self._cube_shader = QOpenGLShaderProgram()
self._cube_shader.addShaderFromSourceFile(
QOpenGLShader.Vertex, 'shaders/OpenGL_2_1/vertex.glsl')
self._cube_shader.addShaderFromSourceFile(
QOpenGLShader.Fragment, 'shaders/OpenGL_2_1/fragment.glsl')
self._cube_shader.bindAttributeLocation('position', 0)
self._cube_shader.bindAttributeLocation('color', 1)
self._cube_shader.link()
self._cube_shader.bind()
self._cube_shader.enableAttributeArray(0)
self._cube_shader.enableAttributeArray(1)
self._cube_shader.setAttributeArray(0,
self._cube_model.vertices.tolist())
self._cube_shader.setAttributeArray(1,
self._cube_model.colors.tolist())
# view_matrix = self._camera.get_view_matrix()
self._cube_shader.setUniformValue(
'view_matrix',
QMatrix4x4(view_matrix.flatten().tolist()).transposed())
self._cube_shader.setUniformValue(
'projection_matrix',
QMatrix4x4(
self._projection_matrix.flatten().tolist()).transposed())
if self._cube_model in self._models.keys():
for entity in self._models[self._cube_model]:
m = create_transformation_matrix(entity.position,
entity.rotation, entity.scale)
self._cube_shader.setUniformValue(
'model_matrix', QMatrix4x4(m.flatten().tolist()))
GL.glDrawElements(GL.GL_TRIANGLES,
len(self._cube_model.indices),
GL.GL_UNSIGNED_INT,
self._cube_model.indices.tolist())
self._cube_shader.disableAttributeArray(0)
self._cube_shader.disableAttributeArray(1)
self._cube_shader.release()
if self._sphere_shader is None:
self._sphere_shader = QOpenGLShaderProgram()
self._sphere_shader.addShaderFromSourceFile(
QOpenGLShader.Vertex, 'shaders/OpenGL_2_1/vertex.glsl')
self._sphere_shader.addShaderFromSourceFile(
QOpenGLShader.Fragment, 'shaders/OpenGL_2_1/fragment.glsl')
self._sphere_shader.bindAttributeLocation('position', 0)
self._sphere_shader.bindAttributeLocation('color', 1)
self._sphere_shader.link()
self._sphere_shader.bind()
self._sphere_shader.enableAttributeArray(0)
self._sphere_shader.enableAttributeArray(1)
self._sphere_shader.setAttributeArray(
0, self._sphere_model.vertices.tolist())
self._sphere_shader.setAttributeArray(
1, self._sphere_model.colors.tolist())
self._sphere_shader.setUniformValue(
'view_matrix',
QMatrix4x4(view_matrix.flatten().tolist()).transposed())
self._sphere_shader.setUniformValue(
'projection_matrix',
QMatrix4x4(
self._projection_matrix.flatten().tolist()).transposed())
if self._sphere_model in self._models.keys():
for entity in self._models[self._sphere_model]:
m = create_transformation_matrix(entity.position,
entity.rotation, entity.scale)
self._cube_shader.setUniformValue(
'model_matrix', QMatrix4x4(m.flatten().tolist()))
GL.glDrawElements(GL.GL_TRIANGLES,
len(self._sphere_model.indices),
GL.GL_UNSIGNED_INT,
self._sphere_model.indices.tolist())
self._sphere_shader.disableAttributeArray(0)
self._sphere_shader.disableAttributeArray(1)
self._sphere_shader.release()
# def build_rotation_matrix (t):
# m = np.identity(4)
# m[0][0] = np.cos(np.radians(t))
# m[0][2] = np.sin(np.radians(t))
# m[2][0] = -np.sin(np.radians(t))
# m[2][2] = np.cos(np.radians(t))
# return m
#
# global theta
# theta += 1
# self._model_matrix = build_rotation_matrix(theta)
# self._model_matrix[2][3] = -3
# Restore the OpenGL state for QtQuick rendering
self._window.resetOpenGLState()
self._window.update()
def set_viewport_size(self, size):
self._viewport_size = size
def set_window(self, window):
self._window = window
def set_projection_matrix(self):
# Need to be set every time we change the size of the window
self._projection_matrix = perspective_projection(
45.0,
self._window.width() / self._window.height(), 0.001, 1000.0)
def move_model(self, val):
self._model_matrix[2][3] += val
def move_camera(self):
pass
def add_geometry(self, geo_enum):
if geo_enum == 0:
self._models[self._cube_model].append(
Entity(
self._cube_model,
np.array([
random.uniform(-3.0, 3.0),
random.uniform(-3.0, 3.0),
random.uniform(-20.0, -10.0)
]),
np.array([
random.uniform(-45.0, 45.0),
random.uniform(-45.0, 45.0),
random.uniform(-45.0, 45.0)
]), np.array([1.0, 1.0, 1.0])))
elif geo_enum == 1:
self._models[self._sphere_model].append(
Entity(
self._sphere_model,
np.array([
random.uniform(-3.0, 3.0),
random.uniform(-3.0, 3.0),
random.uniform(-20.0, -10.0)
]),
np.array([
random.uniform(-30.0, 30.0),
random.uniform(-30.0, 30.0),
random.uniform(-30.0, 30.0)
]), np.array([1.0, 1.0, 1.0])))
else:
return
def delete_geometry(self, geo_enum):
if geo_enum == 0:
if self._models[self._cube_model]:
self._models[self._cube_model].pop()
elif geo_enum == 1:
if self._models[self._sphere_model]:
self._models[self._sphere_model].pop()
def change_random_cube_color(self):
tmp = self._models[self._cube_model]
self._models.pop(self._cube_model)
self._cube_model = Cube()
self._models[self._cube_model] = tmp
def change_random_sphere_color(self):
tmp = self._models[self._sphere_model]
self._models.pop(self._sphere_model)
self._sphere_model = Sphere()
self._models[self._sphere_model] = tmp
class QtGL2Material(Material):
def __init__(self, renderer):
super().__init__()
self._gl = renderer._gl
self._shader_program = None
self._uniform_indices = {}
self._attribute_indices = {}
self._uniform_values = {}
self._bound = False
self._textures = {}
self._disable_textures = Application.getInstance(
).getCommandLineOption("disable-textures", False)
def loadVertexShader(self, file):
if not self._shader_program:
self._shader_program = QOpenGLShaderProgram()
self._shader_program.addShaderFromSourceFile(QOpenGLShader.Vertex,
file)
def loadFragmentShader(self, file):
if not self._shader_program:
self._shader_program = QOpenGLShaderProgram()
self._shader_program.addShaderFromSourceFile(QOpenGLShader.Fragment,
file)
def build(self):
if not self._shader_program:
Logger.log("e", "No shader sources loaded")
return
self._shader_program.link()
def setUniformValue(self, name, value, **kwargs):
if not self._shader_program:
return
cache = True
if "cache" in kwargs:
cache = kwargs["cache"]
if name not in self._uniform_indices:
self._uniform_indices[name] = self._shader_program.uniformLocation(
name)
uniform = self._uniform_indices[name]
if uniform == -1:
return
if cache:
self._uniform_values[uniform] = value
if self._bound:
self._setUniformValueDirect(uniform, value)
def setUniformTexture(self, name, file):
if not self._shader_program or self._disable_textures:
return
if name not in self._uniform_indices:
self._uniform_indices[name] = self._shader_program.uniformLocation(
name)
index = self._uniform_indices[name]
texture = QOpenGLTexture(QImage(file).mirrored())
texture.setMinMagFilters(QOpenGLTexture.Linear, QOpenGLTexture.Linear)
self._textures[index] = texture
self._uniform_values[index] = 1
if self._bound:
texture = self._textures[index]
texture.bind()
self._setUniformValueDirect(index, texture.textureId())
def enableAttribute(self, name, type, offset, stride=0):
if not self._shader_program:
return
self.bind()
if name not in self._attribute_indices:
self._attribute_indices[
name] = self._shader_program.attributeLocation(name)
attribute = self._attribute_indices[name]
if attribute == -1:
return
if type is "int":
self._shader_program.setAttributeBuffer(attribute, self._gl.GL_INT,
offset, 1, stride)
elif type is "float":
self._shader_program.setAttributeBuffer(attribute,
self._gl.GL_FLOAT, offset,
1, stride)
elif type is "vector2f":
self._shader_program.setAttributeBuffer(attribute,
self._gl.GL_FLOAT, offset,
2, stride)
elif type is "vector3f":
self._shader_program.setAttributeBuffer(attribute,
self._gl.GL_FLOAT, offset,
3, stride)
elif type is "vector4f":
self._shader_program.setAttributeBuffer(attribute,
self._gl.GL_FLOAT, offset,
4, stride)
self._shader_program.enableAttributeArray(attribute)
def disableAttribute(self, name):
if not self._shader_program:
return
if name not in self._attribute_indices:
return
self._shader_program.disableAttributeArray(
self._attribute_indices[name])
def bind(self):
if not self._shader_program or not self._shader_program.isLinked():
return
if self._bound:
return
self._bound = True
self._shader_program.bind()
for uniform in self._uniform_values:
if uniform in self._textures:
texture = self._textures[uniform]
texture.bind()
self._setUniformValueDirect(uniform, 0)
else:
self._setUniformValueDirect(uniform,
self._uniform_values[uniform])
def release(self):
if not self._shader_program or not self._bound:
return
for texture in self._textures.values():
texture.release()
self._bound = False
self._shader_program.release()
def _matrixToQMatrix4x4(self, m):
return QMatrix4x4(m.at(0, 0), m.at(0, 1), m.at(0, 2), m.at(0, 3),
m.at(1, 0), m.at(1, 1), m.at(1, 2), m.at(1, 3),
m.at(2, 0), m.at(2, 1), m.at(2, 2), m.at(2, 3),
m.at(3, 0), m.at(3, 1), m.at(3, 2), m.at(3, 3))
def _setUniformValueDirect(self, uniform, value):
if type(value) is Vector:
self._shader_program.setUniformValue(
uniform, QVector3D(value.x, value.y, value.z))
elif type(value) is Matrix:
self._shader_program.setUniformValue(
uniform, self._matrixToQMatrix4x4(value))
elif type(value) is Color:
self._shader_program.setUniformValue(
uniform,
QColor(value.r * 255, value.g * 255, value.b * 255,
value.a * 255))
elif type(value) is list and len(value) is 2:
self._shader_program.setUniformValue(uniform,
QVector2D(value[0], value[1]))
elif type(value) is list and len(value) is 3:
self._shader_program.setUniformValue(
uniform, QVector3D(value[0], value[1], value[2]))
elif type(value) is list and len(value) is 4:
self._shader_program.setUniformValue(
uniform, QVector4D(value[0], value[1], value[2], value[3]))
else:
self._shader_program.setUniformValue(uniform, value)
class MyGLWindow(QGLWidget):
def __init__(self, obj_num, camera_dist=60):
super(MyGLWindow, self).__init__()
self.obj_num = obj_num
self.objs = []
for i in range(obj_num):
self.objs.append(None)
self.shaderProgram = None
self.is_rotate = False
self.is_pan = False
self.pan_param = 0.1
self.rotate_param = 0.5
self.camera = MyCamera(camera_dist)
def paintGL(self):
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
self.shaderProgram.bind()
p_matrix = QMatrix4x4()
p_matrix.perspective(60.0, 1.33, 0.1, 1000)
self.shaderProgram.setUniformValue(self.p_matrix_id, p_matrix)
self.shaderProgram.setUniformValue(self.main_light_dir, QVector4D(0, 1.0, -1.0, 0.0))
self.shaderProgram.setUniformValue(self.sub_light_dir, QVector4D(0, 1.0, 1.0, 0.0))
self.shaderProgram.setUniformValue(self.back_light_dir, QVector4D(0, -1.0, 0.0, 0.0))
self.shaderProgram.setUniformValue(self.ambient_id, QVector4D(0.15, 0.15, 0.15, 0.0))
self.shaderProgram.setUniformValue(self.diffuse_id, QVector4D(1.0, 1.0, 1.0, 1.0))
mv_matrix = self.camera.getMatrix()
self.shaderProgram.setUniformValue(self.mv_matrix_id, mv_matrix)
viewport_width = self.width() / self.obj_num
for i in range(self.obj_num):
glViewport(int(i * viewport_width), 0, int(viewport_width), self.height())
if self.objs[i] is not None:
self.objs[i].render()
self.shaderProgram.release()
def initializeGL(self):
glClearColor(0.95, 0.95, 0.95, 1.0)
glClearDepth(1.0)
glEnable(GL_DEPTH_TEST)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(60.0, 1.33, 0.1, 1000)
self.shaderProgram = QOpenGLShaderProgram()
print("Initialize vertex shader: ", self.shaderProgram.addShaderFromSourceFile(QOpenGLShader.Vertex, "shader.vert"))
print("Initialize fragment shader: ", self.shaderProgram.addShaderFromSourceFile(QOpenGLShader.Fragment, "shader.frag"))
self.shaderProgram.link()
self.p_matrix_id = self.shaderProgram.uniformLocation("um4p")
self.mv_matrix_id = self.shaderProgram.uniformLocation("um4mv")
self.main_light_dir = self.shaderProgram.uniformLocation("main_light_dir")
self.sub_light_dir = self.shaderProgram.uniformLocation("sub_light_dir")
self.back_light_dir = self.shaderProgram.uniformLocation("back_light_dir")
self.ambient_id = self.shaderProgram.uniformLocation("ambient")
self.diffuse_id = self.shaderProgram.uniformLocation("diffuse")
self.pos_id = self.shaderProgram.attributeLocation("pos")
self.normal_id = self.shaderProgram.attributeLocation("normal")
def mousePressEvent(self, event):
if event.button() == 2:
self.is_rotate = True
elif event.button() == 4:
self.is_pan = True
self.lastPos = event.pos()
def mouseMoveEvent(self, event):
dx = event.x() - self.lastPos.x()
dy = event.y() - self.lastPos.y()
if self.is_rotate:
self.camera.rotate(dy * self.rotate_param, -dx * self.rotate_param)
elif self.is_pan:
self.camera.pan(dx * self.pan_param, dy * self.pan_param)
self.lastPos = event.pos()
self.repaint()
def mouseReleaseEvent(self, event):
self.is_rotate = False
self.is_pan = False
def setObj(self, idx, vertices, faces, normals=None, focus=False):
self.shaderProgram.bind()
if self.objs[idx] is None:
self.objs[idx] = MyMeshObj(vertices, faces, normals)
self.objs[idx].buildRenderingBuffer(self.pos_id, self.normal_id)
else:
self.objs[idx].updateMesh(vertices, faces)
self.objs[idx].updateRenderingBuffer(self.pos_id, self.normal_id)
self.shaderProgram.release()
if focus:
self.camera.focus(self.objs[idx])
class AkiraRenderWindow(OpenGLWindow):
def __init__(self):
super(AkiraRenderWindow, self).__init__()
self.m_program = 0
self.m_frame = 0.0
self.m_vertex = 0
self.m_vertices = []
self.m_color = 0
self.m_colors = []
self.m_offset = 0
self.m_offsets = 0
self.m_vao = None
def initialize(self):
self.create_shader()
self.create_vao()
def create_shader(self):
self.m_program = QOpenGLShaderProgram(self)
self.m_program.addShaderFromSourceFile(QOpenGLShader.Vertex, "shaders/chapter2.vs.glsl")
self.m_program.addShaderFromSourceFile(QOpenGLShader.Fragment, "shaders/chapter2.fs.glsl")
self.m_program.link()
self.m_vertex = self.m_program.attributeLocation("m_vertex")
self.m_offset = self.m_program.attributeLocation("m_offset")
self.m_color = self.m_program.attributeLocation("m_color")
return self
def create_vao(self):
vertex_array_object = GL.glGenVertexArrays(1)
GL.glBindVertexArray(vertex_array_object)
vertex_buffer = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, vertex_buffer)
#using PyQt shader program instead
GL.glEnableVertexAttribArray(self.m_vertex)
GL.glEnableVertexAttribArray(self.m_color)
self.m_vao = vertex_array_object
return self
def render(self):
ratio = int(self.devicePixelRatio().real)
GL.glViewport(0, 0, self.width()*ratio, self.height()*ratio)
GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT)
self.m_offsets = QVector4D(sin(self.m_frame/20)*0.5, cos(self.m_frame/20)*0.5, 0.0, 0.0)
self.m_vertices = [(0.25, -0.25, 0, 1.0),
(-0.25, -0.25, 0, 1.0),
(0.25, 0.25, 0, 1.0)]
self.m_colors = [(0.0, 0.0, 1.0, 1.0),
(1.0, 0.0, 0.0, 1.0),
(0.0, 1.0, 0.0, 1.0)]
self.m_program.setAttributeValue(self.m_offset, self.m_offsets)
self.m_program.setAttributeArray(self.m_vertex, self.m_vertices)
self.m_program.setAttributeArray(self.m_color, self.m_colors)
self.m_program.bind()
GL.glDrawArrays(GL.GL_TRIANGLES, 0, 3)
self.m_program.release()
self.m_frame += 1
class ShaderWindow(OpenGLWindow):
def __init__(self):
super(ShaderWindow, self).__init__()
self.m_program = 0
self.m_vao = None
self.m_model_matrix = QMatrix4x4()
self.m_view_matrix = QMatrix4x4()
self.m_projection_matrix = QMatrix4x4()
@property
def m_mvp_matrix(self):
return self.m_projection_matrix * self.m_view_matrix * self.m_model_matrix
def initialize_data(self):
pass
def initialize(self):
self.initialize_data()
self.create_shader()
self.bind_attribute_localtion()
self.create_vao()
self.enableVAA()
def bind_attribute_localtion(self):
pass
def create_shader(self):
self.m_program = QOpenGLShaderProgram(self)
for k, v in self.shader_files.items():
self.m_program.addShaderFromSourceFile(k, v)
self.m_program.link()
def create_vao(self):
vertex_array_object = GL.glGenVertexArrays(1)
GL.glBindVertexArray(vertex_array_object)
vertex_buffer = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, vertex_buffer)
def enableVAA(self):
pass
def render(self):
pass
def keyPressEvent(self, event):
key = event.key()
if key == Qt.Key_Up:
self.m_model_matrix.rotate(2.0, 1.0, 0.0, 0.0)
elif key == Qt.Key_Down:
self.m_model_matrix.rotate(-2.0, 1.0, 0.0, 0.0)
elif key == Qt.Key_Left:
self.m_model_matrix.rotate(2.0, 0.0, 1.0, 0.0)
elif key == Qt.Key_Right:
self.m_model_matrix.rotate(-2.0, 0.0, 1.0, 0.0)
else:
pass
