fsleyes.gl.gl14.glvolume_funcs

This module provides functions which are used by the GLVolume class to render Image overlays in an OpenGL 1.4 compatible manner.

An ARBPShader is used to manage the glvolume vertex/fragment programs.

fsleyes.gl.gl14.glvolume_funcs.init(self)

Calls compileShaders() and updateShaderState().

fsleyes.gl.gl14.glvolume_funcs.destroy(self)

Deletes handles to the vertex/fragment programs.

fsleyes.gl.gl14.glvolume_funcs.compileShaders(self)

Creates a ARBPShader instance.

fsleyes.gl.gl14.glvolume_funcs.updateShaderState(self)

Sets all variables required by the vertex and fragment programs.

fsleyes.gl.gl14.glvolume_funcs.preDraw(self, xform=None, bbox=None)

Prepares to draw a slice from the given GLVolume instance.

fsleyes.gl.gl14.glvolume_funcs.draw2D(self, zpos, axes, xform=None, bbox=None)

Draws a 2D slice of the image at the given Z location.

fsleyes.gl.gl14.glvolume_funcs.draw3D(self, xform=None, bbox=None)

Draws the image in 3D on the canvas.

Parameters

• self – The GLVolume object which is managing the image to be drawn.

• xform – A 4*4 transformation matrix to be applied to the vertex data.

• bbox – An optional bounding box.

fsleyes.gl.gl14.glvolume_funcs.drawAll(self, axes, zposes, xforms)

Draws mutltiple slices of the given image at the given Z position, applying the corresponding transformation to each of the slices.

fsleyes.gl.gl14.glvolume_funcs.postDraw(self, xform=None, bbox=None)

Cleans up the GL state after drawing from the given GLVolume instance.