FlowOpenGLView Class Reference

#import <FlowOpenGLView.h>

List of all members.

Public Member Functions
(NSOpenGLPixelFormat *)	- createPixelFormat:
(BOOL)	- initGL
(void)	- dataLoaded:
(void)	- layerChanged:
(void)	- createTextureLayer:channel:width:height:
(void)	- createTransferFunctionTexture:colorCodingLayer:
(void)	- drawColorCodingWithTextureUnit:transferTextureUnit:opacity:
(void)	- drawArrowPlotWithTextureUnit0:textureUnit1:textureUnit2:steps:colorToning:arrowScaleFactor:opacity:
(void)	- drawStreamLinesWithGridIdx:withColor:glyphMapping:tapering:opacity:algo:
(void)	- renderLayers
Protected Attributes
Users ulrich Projects Xcode GoFlow FlowOpenGLView h Users ulrich Projects Xcode GoFlow FlowOpenGLView h Users ulrich Projects Xcode GoFlow FlowOpenGLView h Users ulrich Projects Xcode GoFlow FlowOpenGLView h int	colorBits
Users ulrich Projects Xcode GoFlow FlowOpenGLView h Users ulrich Projects Xcode GoFlow FlowOpenGLView h Users ulrich Projects Xcode GoFlow FlowOpenGLView h Users ulrich Projects Xcode GoFlow FlowOpenGLView h int	depthBits
float	zoomFactor
float	moveX
float	moveY
float	scaleFactorX
float	scaleFactorY
GLuint	testTexture
FlowData *	flowData
FlowShader *	flowShader
SettingsController *	settings
NSMutableArray *	streamLineGrids
GLuint	textureLayers [kMaxChannels]
float	textureLayersMinMax [kMaxChannels][2]
int	idxStartTransferTexture
int	xChannel
int	yChannel
int	velChannel

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Detailed Description

Implementaion of the rendering window with the rendering process

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Member Function Documentation

- (NSOpenGLPixelFormat *) createPixelFormat:

(NSRect)

frame

Creates the pixel format for the rendering window

- (void) createTextureLayer:		(int)	textureUnit
channel:		(FlowChannel*)	c
width:		(int)	w
height:		(int)	h

Creates texture of flow data which can e.g. processed by the shaders

Parameters:

textureUnit	The OpenGL texture unit
c	The channel which should be used to generate the texture
w	The width of the texture
h	The height of the texture

- (void) createTransferFunctionTexture:		(int)	textureUnit
colorCodingLayer:		(ColorCodingLayer *)	layer

Creats an 1D transfer texture which can be used by the shaders

Parameters:

textureUnit	The OpenGL texture unit
layer	The ColorCodingLayer from which the transfer texture will be created

- (void) dataLoaded:

(NSNotification *)

notification

This method will be called if the data source changes

- (void) drawArrowPlotWithTextureUnit0:		(int)	unit0
textureUnit1:		(int)	unit1
textureUnit2:		(int)	unit2
steps:		(int)	s
colorToning:		(NSColor *)	color
arrowScaleFactor:		(float)	scale
opacity:		(float)	opacity

Renders an Arrow Plot Layer

Parameters:

unit0	The OpenGL texture unit containing usually an x-component texture
unit1	The OpenGL texture unit containing usually an y-component texture
unit2	The OpenGL texture unit containing usually a velocity-component texture
steps	The steps how often an arrow should be plotted
colorToning	The color of the arrow
arrowScaleFactor	The scale factor to control the size of the arrow
opacity	The opacity of the layer

- (void) drawColorCodingWithTextureUnit:		(int)	unit
transferTextureUnit:		(int)	transferUnit
opacity:		(float)	opacity

Renders a Color Coding Layer

Parameters:

unit	The OpenGL texture unit containing the image which should be rendered
transferUnit	The OpenGL texture unit containing the transfer function texture
opacity	The opacity of the layer

- (void) drawStreamLinesWithGridIdx:		(int)	gridIdx
withColor:		(NSColor *)	color
glyphMapping:		(BOOL)	useGlyphs
tapering:		(BOOL)	tapering
opacity:		(float)	opacity
algo:		(int)	algo

Renders a Stream Line Layer

Parameters:

gridIdx	The index of the stream line grid
color	The color of the stream
useGlyphs	Indicates if glyphs should be rendered
tapering	Indicates if tapering should be rendered
opacity	The opacity of the layers
algo	The algorithm for the stream line generation

- (BOOL) initGL

Initializes the OpenGL context

Returns:

YES of successful

- (void) layerChanged:

(NSNotification *)

notification

This method will be called if there was any change in the layer parameters

- (void) renderLayers

Renders all layers

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Member Data Documentation

- (Users ulrich Projects Xcode GoFlow FlowOpenGLView h Users ulrich Projects Xcode GoFlow FlowOpenGLView h Users ulrich Projects Xcode GoFlow FlowOpenGLView h Users ulrich Projects Xcode GoFlow FlowOpenGLView h int) colorBits [protected]

- (Users ulrich Projects Xcode GoFlow FlowOpenGLView h Users ulrich Projects Xcode GoFlow FlowOpenGLView h Users ulrich Projects Xcode GoFlow FlowOpenGLView h Users ulrich Projects Xcode GoFlow FlowOpenGLView h int) depthBits [protected]

- (FlowData*) flowData [protected]

- (FlowShader*) flowShader [protected]

- (int) idxStartTransferTexture [protected]

index to first transfer function texture in textureLayers

- (float) moveX [protected]

- (float) moveY [protected]

- (float) scaleFactorX [protected]

- (float) scaleFactorY [protected]

- (SettingsController*) settings [protected]

- (NSMutableArray*) streamLineGrids [protected]

- (GLuint) testTexture [protected]

- (GLuint textureLayers[kMaxChannels]) [protected]

Array containing Layer Textures

- (float textureLayersMinMax[kMaxChannels][2]) [protected]

Array containing minimun and maximum values for each channel

- (int) velChannel [protected]

- (int) xChannel [protected]

Special computed channels

- (int) yChannel [protected]

- (float) zoomFactor [protected]

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The documentation for this class was generated from the following files:

• FlowOpenGLView.h
• FlowOpenGLView.mm