[2798] | 1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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[226] | 2 | /* |
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| 3 | * ---------------------------------------------------------------------- |
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| 4 | * Nanovis: Visualization of Nanoelectronics Data |
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| 5 | * |
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| 6 | * ====================================================================== |
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| 7 | * AUTHOR: Wei Qiao <qiaow@purdue.edu> |
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[427] | 8 | * Michael McLennan <mmclennan@purdue.edu> |
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[226] | 9 | * Purdue Rendering and Perceptualization Lab (PURPL) |
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| 10 | * |
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[3502] | 11 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
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[226] | 12 | * |
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| 13 | * See the file "license.terms" for information on usage and |
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| 14 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 15 | * ====================================================================== |
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| 16 | */ |
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[379] | 17 | |
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[391] | 18 | #include <sys/time.h> |
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[4874] | 19 | #include <cassert> |
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[2831] | 20 | #include <cstdio> |
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[5400] | 21 | #include <cmath> // for fmod() |
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[2827] | 22 | |
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[3465] | 23 | #include <GL/glew.h> |
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| 24 | #include <GL/glut.h> |
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| 25 | |
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| 26 | #include <graphics/RenderContext.h> |
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[5402] | 27 | #include <vrmath/BBox.h> |
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[3492] | 28 | #include <vrmath/Vector3f.h> |
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[2831] | 29 | |
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[3465] | 30 | #include <util/FilePath.h> |
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| 31 | #include <util/Fonts.h> |
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| 32 | |
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[915] | 33 | #include <BMPImageLoaderImpl.h> |
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| 34 | #include <ImageLoaderFactory.h> |
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[848] | 35 | |
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[2877] | 36 | #include "config.h" |
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[2831] | 37 | #include "nanovis.h" |
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[4874] | 38 | #include "nanovisServer.h" |
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[2831] | 39 | #include "define.h" |
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| 40 | |
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[4612] | 41 | #include "Flow.h" |
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[2831] | 42 | #include "Grid.h" |
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| 43 | #include "HeightMap.h" |
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[4889] | 44 | #include "Camera.h" |
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| 45 | #include "LIC.h" |
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| 46 | #include "Shader.h" |
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[5498] | 47 | #include "OrientationIndicator.h" |
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[2831] | 48 | #include "PlaneRenderer.h" |
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[4937] | 49 | #include "PPMWriter.h" |
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[4879] | 50 | #include "Texture2D.h" |
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[2831] | 51 | #include "Trace.h" |
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[4874] | 52 | #include "TransferFunction.h" |
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[1429] | 53 | #include "Unirect.h" |
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[2831] | 54 | #include "VelocityArrowsSlice.h" |
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[4879] | 55 | #include "Volume.h" |
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[2831] | 56 | #include "VolumeInterpolator.h" |
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| 57 | #include "VolumeRenderer.h" |
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[1429] | 58 | |
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[4874] | 59 | using namespace nv; |
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[3463] | 60 | using namespace nv::graphics; |
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| 61 | using namespace nv::util; |
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[4612] | 62 | using namespace vrmath; |
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[3463] | 63 | |
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[848] | 64 | // STATIC MEMBER DATA |
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[2834] | 65 | |
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[4874] | 66 | Tcl_Interp *NanoVis::interp = NULL; |
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[1111] | 67 | |
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[4904] | 68 | bool NanoVis::redrawPending = false; |
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[3567] | 69 | bool NanoVis::debugFlag = false; |
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[2877] | 70 | bool NanoVis::axisOn = true; |
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[860] | 71 | |
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[3567] | 72 | int NanoVis::winWidth = NPIX; |
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| 73 | int NanoVis::winHeight = NPIX; |
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| 74 | int NanoVis::renderWindow = 0; |
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| 75 | unsigned char *NanoVis::screenBuffer = NULL; |
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| 76 | Texture2D *NanoVis::legendTexture = NULL; |
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| 77 | Fonts *NanoVis::fonts; |
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[4904] | 78 | Camera *NanoVis::_camera = NULL; |
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[3567] | 79 | RenderContext *NanoVis::renderContext = NULL; |
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[934] | 80 | |
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[3567] | 81 | NanoVis::TransferFunctionHashmap NanoVis::tfTable; |
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| 82 | NanoVis::VolumeHashmap NanoVis::volumeTable; |
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| 83 | NanoVis::FlowHashmap NanoVis::flowTable; |
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| 84 | NanoVis::HeightMapHashmap NanoVis::heightMapTable; |
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[1028] | 85 | |
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[1510] | 86 | float NanoVis::xMin = FLT_MAX; |
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| 87 | float NanoVis::xMax = -FLT_MAX; |
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| 88 | float NanoVis::yMin = FLT_MAX; |
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| 89 | float NanoVis::yMax = -FLT_MAX; |
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| 90 | float NanoVis::zMin = FLT_MAX; |
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| 91 | float NanoVis::zMax = -FLT_MAX; |
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[5402] | 92 | BBox NanoVis::sceneBounds; |
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[1431] | 93 | |
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[3567] | 94 | VolumeRenderer *NanoVis::volRenderer = NULL; |
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| 95 | VelocityArrowsSlice *NanoVis::velocityArrowsSlice = NULL; |
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[4889] | 96 | LIC *NanoVis::licRenderer = NULL; |
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[3567] | 97 | PlaneRenderer *NanoVis::planeRenderer = NULL; |
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[5498] | 98 | OrientationIndicator *NanoVis::orientationIndicator = NULL; |
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[4874] | 99 | Grid *NanoVis::grid = NULL; |
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[431] | 100 | |
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[3567] | 101 | //frame buffer for final rendering |
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| 102 | GLuint NanoVis::_finalFbo = 0; |
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| 103 | GLuint NanoVis::_finalColorTex = 0; |
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| 104 | GLuint NanoVis::_finalDepthRb = 0; |
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| 105 | |
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[1219] | 106 | // Default camera location. |
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[4904] | 107 | Vector3f def_eye(0.0f, 0.0f, 2.5f); |
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[2880] | 108 | |
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[2951] | 109 | void |
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| 110 | NanoVis::removeAllData() |
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[1161] | 111 | { |
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[3452] | 112 | TRACE("Enter"); |
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[4904] | 113 | |
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[3362] | 114 | if (grid != NULL) { |
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| 115 | TRACE("Deleting grid"); |
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| 116 | delete grid; |
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| 117 | } |
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[4904] | 118 | if (_camera != NULL) { |
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| 119 | TRACE("Deleting camera"); |
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| 120 | delete _camera; |
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[3362] | 121 | } |
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| 122 | if (volRenderer != NULL) { |
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| 123 | TRACE("Deleting volRenderer"); |
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| 124 | delete volRenderer; |
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| 125 | } |
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| 126 | if (planeRenderer != NULL) { |
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| 127 | TRACE("Deleting planeRenderer"); |
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| 128 | delete planeRenderer; |
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| 129 | } |
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| 130 | if (legendTexture != NULL) { |
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| 131 | TRACE("Deleting legendTexture"); |
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| 132 | delete legendTexture; |
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| 133 | } |
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| 134 | TRACE("Deleting flows"); |
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[3566] | 135 | deleteFlows(interp); |
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[3362] | 136 | if (licRenderer != NULL) { |
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| 137 | TRACE("Deleting licRenderer"); |
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| 138 | delete licRenderer; |
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| 139 | } |
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| 140 | if (velocityArrowsSlice != NULL) { |
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| 141 | TRACE("Deleting velocityArrowsSlice"); |
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| 142 | delete velocityArrowsSlice; |
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| 143 | } |
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| 144 | if (renderContext != NULL) { |
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| 145 | TRACE("Deleting renderContext"); |
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| 146 | delete renderContext; |
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| 147 | } |
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| 148 | if (screenBuffer != NULL) { |
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| 149 | TRACE("Deleting screenBuffer"); |
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| 150 | delete [] screenBuffer; |
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[3559] | 151 | screenBuffer = NULL; |
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[3362] | 152 | } |
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[3470] | 153 | if (fonts != NULL) { |
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| 154 | TRACE("Deleting fonts"); |
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| 155 | delete fonts; |
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| 156 | } |
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[3452] | 157 | TRACE("Leave"); |
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[1161] | 158 | } |
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| 159 | |
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[4904] | 160 | void |
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| 161 | NanoVis::eventuallyRedraw() |
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[1431] | 162 | { |
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[4904] | 163 | if (!redrawPending) { |
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[2863] | 164 | glutPostRedisplay(); |
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[4904] | 165 | redrawPending = true; |
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[1431] | 166 | } |
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| 167 | } |
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| 168 | |
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[1241] | 169 | void |
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[4904] | 170 | NanoVis::panCamera(float dx, float dy) |
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[1236] | 171 | { |
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| 172 | /* Move the camera and its target by equal amounts along the x and y |
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| 173 | * axes. */ |
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[3452] | 174 | TRACE("pan: x=%f, y=%f", dx, dy); |
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[1312] | 175 | |
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[4904] | 176 | _camera->x(def_eye.x - dx); |
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| 177 | _camera->y(def_eye.y + dy); |
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| 178 | TRACE("set eye to %f %f", _camera->x(), _camera->y()); |
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[1236] | 179 | } |
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| 180 | |
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[2854] | 181 | void |
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[4904] | 182 | NanoVis::zoomCamera(float z) |
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[2854] | 183 | { |
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| 184 | /* Move the camera and its target by equal amounts along the x and y |
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| 185 | * axes. */ |
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[3452] | 186 | TRACE("zoom: z=%f", z); |
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[1236] | 187 | |
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[4904] | 188 | _camera->z(def_eye.z / z); |
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[5402] | 189 | TRACE("set camera z to %f", _camera->z()); |
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[3492] | 190 | |
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| 191 | collectBounds(); |
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| 192 | |
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[5402] | 193 | _camera->resetClippingRange(sceneBounds.min, sceneBounds.max); |
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[2854] | 194 | } |
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| 195 | |
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[3492] | 196 | void |
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[4904] | 197 | NanoVis::rotateCamera(float phi, float theta, float psi) |
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| 198 | { |
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| 199 | _camera->orient(phi, theta, psi); |
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| 200 | } |
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| 201 | |
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| 202 | void |
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| 203 | NanoVis::orientCamera(double *quat) |
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| 204 | { |
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| 205 | _camera->orient(quat); |
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| 206 | } |
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| 207 | |
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| 208 | void |
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| 209 | NanoVis::setCameraPosition(Vector3f pos) |
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| 210 | { |
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| 211 | _camera->setPosition(pos); |
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| 212 | } |
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| 213 | |
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| 214 | void |
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| 215 | NanoVis::setCameraUpdir(Camera::AxisDirection dir) |
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| 216 | { |
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| 217 | _camera->setUpdir(dir); |
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| 218 | } |
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| 219 | |
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| 220 | void |
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[3492] | 221 | NanoVis::resetCamera(bool resetOrientation) |
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| 222 | { |
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| 223 | TRACE("Resetting all=%d", resetOrientation ? 1 : 0); |
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| 224 | |
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| 225 | collectBounds(); |
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[5402] | 226 | _camera->reset(sceneBounds.min, sceneBounds.max, resetOrientation); |
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[3492] | 227 | |
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[4904] | 228 | def_eye = _camera->getPosition(); |
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[3492] | 229 | } |
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| 230 | |
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[2877] | 231 | /** \brief Load a 3D volume |
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| 232 | * |
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[4612] | 233 | * \param name Volume ID |
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| 234 | * \param width Number of samples in X direction |
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| 235 | * \param height Number of samples in Y direction |
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| 236 | * \param depth Number of samples in Z direction |
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| 237 | * \param numComponents the number of scalars for each space point. All component |
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[2877] | 238 | * scalars for a point are placed consequtively in data array |
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| 239 | * width, height and depth: number of points in each dimension |
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[4612] | 240 | * \param data Array of floats |
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| 241 | * \param vmin Min value of field |
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| 242 | * \param vmax Max value of field |
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| 243 | * \param nonZeroMin Minimum non-zero value of field |
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[2877] | 244 | * \param data pointer to an array of floats. |
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[226] | 245 | */ |
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[927] | 246 | Volume * |
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[2877] | 247 | NanoVis::loadVolume(const char *name, int width, int height, int depth, |
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[4612] | 248 | int numComponents, float *data, double vmin, double vmax, |
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| 249 | double nonZeroMin) |
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[457] | 250 | { |
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[3567] | 251 | VolumeHashmap::iterator itr = volumeTable.find(name); |
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| 252 | if (itr != volumeTable.end()) { |
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[2863] | 253 | WARN("volume \"%s\" already exists", name); |
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[3567] | 254 | removeVolume(itr->second); |
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[457] | 255 | } |
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[3567] | 256 | |
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[5406] | 257 | Volume *volume = new Volume(width, height, depth, |
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[4612] | 258 | numComponents, |
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| 259 | data, vmin, vmax, nonZeroMin); |
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[3362] | 260 | Volume::updatePending = true; |
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[3567] | 261 | volume->name(name); |
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| 262 | volumeTable[name] = volume; |
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| 263 | |
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| 264 | return volume; |
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[226] | 265 | } |
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| 266 | |
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[834] | 267 | // Gets a colormap 1D texture by name. |
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[2930] | 268 | TransferFunction * |
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[3567] | 269 | NanoVis::getTransferFunction(const TransferFunctionId& id) |
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[834] | 270 | { |
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[3567] | 271 | TransferFunctionHashmap::iterator itr = tfTable.find(id); |
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| 272 | if (itr == tfTable.end()) { |
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[3568] | 273 | TRACE("No transfer function named \"%s\" found", id.c_str()); |
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[887] | 274 | return NULL; |
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[3567] | 275 | } else { |
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| 276 | return itr->second; |
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[445] | 277 | } |
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[226] | 278 | } |
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| 279 | |
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[834] | 280 | // Creates of updates a colormap 1D texture by name. |
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[2930] | 281 | TransferFunction * |
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[3567] | 282 | NanoVis::defineTransferFunction(const TransferFunctionId& id, |
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| 283 | size_t n, float *data) |
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[587] | 284 | { |
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[3567] | 285 | TransferFunction *tf = getTransferFunction(id); |
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| 286 | if (tf == NULL) { |
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| 287 | TRACE("Creating new transfer function \"%s\"", id.c_str()); |
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[3568] | 288 | tf = new TransferFunction(id.c_str(), n, data); |
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[3567] | 289 | tfTable[id] = tf; |
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[834] | 290 | } else { |
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[3567] | 291 | TRACE("Updating existing transfer function \"%s\"", id.c_str()); |
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| 292 | tf->update(n, data); |
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[834] | 293 | } |
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[3567] | 294 | return tf; |
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[834] | 295 | } |
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[380] | 296 | |
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[1089] | 297 | int |
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[2877] | 298 | NanoVis::renderLegend(TransferFunction *tf, double min, double max, |
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[2953] | 299 | int width, int height, const char *volArg) |
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[829] | 300 | { |
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[3452] | 301 | TRACE("Enter"); |
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[1984] | 302 | |
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[2877] | 303 | int old_width = winWidth; |
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| 304 | int old_height = winHeight; |
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[829] | 305 | |
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[2930] | 306 | planeRenderer->setScreenSize(width, height); |
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[2877] | 307 | resizeOffscreenBuffer(width, height); |
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[829] | 308 | |
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| 309 | // generate data for the legend |
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| 310 | float data[512]; |
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| 311 | for (int i=0; i < 256; i++) { |
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| 312 | data[i] = data[i+256] = (float)(i/255.0); |
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| 313 | } |
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[2834] | 314 | legendTexture = new Texture2D(256, 2, GL_FLOAT, GL_LINEAR, 1, data); |
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[2930] | 315 | int index = planeRenderer->addPlane(legendTexture, tf); |
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| 316 | planeRenderer->setActivePlane(index); |
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[829] | 317 | |
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[2930] | 318 | bindOffscreenBuffer(); |
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[829] | 319 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //clear screen |
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[2877] | 320 | planeRenderer->render(); |
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[829] | 321 | |
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[4937] | 322 | glPixelStorei(GL_PACK_ALIGNMENT, 1); |
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[2877] | 323 | glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, screenBuffer); |
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[1984] | 324 | { |
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[1282] | 325 | char prefix[200]; |
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[1325] | 326 | |
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[2953] | 327 | TRACE("Sending ppm legend image %s min:%g max:%g", volArg, min, max); |
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[1282] | 328 | sprintf(prefix, "nv>legend %s %g %g", volArg, min, max); |
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[4937] | 329 | #ifdef USE_THREADS |
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| 330 | queuePPM(g_queue, prefix, screenBuffer, width, height); |
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| 331 | #else |
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| 332 | writePPM(g_fdOut, prefix, screenBuffer, width, height); |
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| 333 | #endif |
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[1195] | 334 | } |
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[2930] | 335 | planeRenderer->removePlane(index); |
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[2877] | 336 | resizeOffscreenBuffer(old_width, old_height); |
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[829] | 337 | |
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[2951] | 338 | delete legendTexture; |
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| 339 | legendTexture = NULL; |
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[3452] | 340 | TRACE("Leave"); |
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[829] | 341 | return TCL_OK; |
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| 342 | } |
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| 343 | |
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[226] | 344 | //initialize frame buffer objects for offscreen rendering |
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[4874] | 345 | bool |
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[2877] | 346 | NanoVis::initOffscreenBuffer() |
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[580] | 347 | { |
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[3452] | 348 | TRACE("Enter"); |
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[2930] | 349 | assert(_finalFbo == 0); |
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[1197] | 350 | // Initialize a fbo for final display. |
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[2877] | 351 | glGenFramebuffersEXT(1, &_finalFbo); |
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[2831] | 352 | |
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[2877] | 353 | glGenTextures(1, &_finalColorTex); |
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| 354 | glBindTexture(GL_TEXTURE_2D, _finalColorTex); |
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[4937] | 355 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
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| 356 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
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[2877] | 357 | #if defined(HAVE_FLOAT_TEXTURES) && defined(USE_HALF_FLOAT) |
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| 358 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, winWidth, winHeight, 0, |
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[887] | 359 | GL_RGB, GL_INT, NULL); |
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[2877] | 360 | #elif defined(HAVE_FLOAT_TEXTURES) |
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| 361 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, winWidth, winHeight, 0, |
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| 362 | GL_RGB, GL_INT, NULL); |
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[383] | 363 | #else |
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[2877] | 364 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, winWidth, winHeight, 0, |
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[1205] | 365 | GL_RGB, GL_INT, NULL); |
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[383] | 366 | #endif |
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[2930] | 367 | |
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[2877] | 368 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _finalFbo); |
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| 369 | glGenRenderbuffersEXT(1, &_finalDepthRb); |
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| 370 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, _finalDepthRb); |
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[1198] | 371 | glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, |
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[2877] | 372 | winWidth, winHeight); |
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[1198] | 373 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
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[2877] | 374 | GL_TEXTURE_2D, _finalColorTex, 0); |
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[1198] | 375 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, |
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[2877] | 376 | GL_RENDERBUFFER_EXT, _finalDepthRb); |
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[1200] | 377 | |
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[1199] | 378 | GLenum status; |
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[1200] | 379 | if (!CheckFBO(&status)) { |
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[2877] | 380 | PrintFBOStatus(status, "finalFbo"); |
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[4874] | 381 | return false; |
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[1199] | 382 | } |
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[1200] | 383 | |
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[3452] | 384 | TRACE("Leave"); |
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[4874] | 385 | return true; |
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[226] | 386 | } |
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| 387 | |
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[423] | 388 | //resize the offscreen buffer |
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[4874] | 389 | bool |
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[2877] | 390 | NanoVis::resizeOffscreenBuffer(int w, int h) |
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[834] | 391 | { |
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[3452] | 392 | TRACE("Enter (%d, %d)", w, h); |
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[2877] | 393 | if ((w == winWidth) && (h == winHeight)) { |
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[4874] | 394 | return true; |
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[1205] | 395 | } |
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[2877] | 396 | winWidth = w; |
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| 397 | winHeight = h; |
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[2831] | 398 | |
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[848] | 399 | if (fonts) { |
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| 400 | fonts->resize(w, h); |
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[776] | 401 | } |
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[3452] | 402 | TRACE("screenBuffer size: %d %d", w, h); |
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[2831] | 403 | |
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[2877] | 404 | if (screenBuffer != NULL) { |
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| 405 | delete [] screenBuffer; |
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| 406 | screenBuffer = NULL; |
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[834] | 407 | } |
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[2831] | 408 | |
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[4937] | 409 | screenBuffer = new unsigned char[3*winWidth*winHeight]; |
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[2877] | 410 | assert(screenBuffer != NULL); |
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[4877] | 411 | |
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[834] | 412 | //delete the current render buffer resources |
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[2877] | 413 | glDeleteTextures(1, &_finalColorTex); |
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| 414 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, _finalDepthRb); |
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| 415 | glDeleteRenderbuffersEXT(1, &_finalDepthRb); |
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[1205] | 416 | |
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[3452] | 417 | TRACE("before deleteframebuffers"); |
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[2877] | 418 | glDeleteFramebuffersEXT(1, &_finalFbo); |
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[1205] | 419 | |
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[3452] | 420 | TRACE("reinitialize FBO"); |
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[834] | 421 | //Reinitialize final fbo for final display |
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[2877] | 422 | glGenFramebuffersEXT(1, &_finalFbo); |
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[1205] | 423 | |
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[2877] | 424 | glGenTextures(1, &_finalColorTex); |
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| 425 | glBindTexture(GL_TEXTURE_2D, _finalColorTex); |
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[4937] | 426 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
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| 427 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
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[2877] | 428 | #if defined(HAVE_FLOAT_TEXTURES) && defined(USE_HALF_FLOAT) |
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| 429 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, winWidth, winHeight, 0, |
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[887] | 430 | GL_RGB, GL_INT, NULL); |
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[2877] | 431 | #elif defined(HAVE_FLOAT_TEXTURES) |
---|
| 432 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, winWidth, winHeight, 0, |
---|
| 433 | GL_RGB, GL_INT, NULL); |
---|
[423] | 434 | #else |
---|
[2877] | 435 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, winWidth, winHeight, 0, |
---|
[887] | 436 | GL_RGB, GL_INT, NULL); |
---|
[423] | 437 | #endif |
---|
[2930] | 438 | |
---|
[2877] | 439 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, _finalFbo); |
---|
| 440 | glGenRenderbuffersEXT(1, &_finalDepthRb); |
---|
| 441 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, _finalDepthRb); |
---|
[1200] | 442 | glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, |
---|
[2877] | 443 | winWidth, winHeight); |
---|
[1205] | 444 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
---|
[2877] | 445 | GL_TEXTURE_2D, _finalColorTex, 0); |
---|
[1200] | 446 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, |
---|
[2877] | 447 | GL_RENDERBUFFER_EXT, _finalDepthRb); |
---|
[2831] | 448 | |
---|
[1199] | 449 | GLenum status; |
---|
[1200] | 450 | if (!CheckFBO(&status)) { |
---|
[2877] | 451 | PrintFBOStatus(status, "finalFbo"); |
---|
[4874] | 452 | return false; |
---|
[1199] | 453 | } |
---|
[1200] | 454 | |
---|
[3452] | 455 | TRACE("change camera"); |
---|
[1205] | 456 | //change the camera setting |
---|
[4904] | 457 | _camera->setViewport(0, 0, winWidth, winHeight); |
---|
[2930] | 458 | planeRenderer->setScreenSize(winWidth, winHeight); |
---|
[1205] | 459 | |
---|
[3452] | 460 | TRACE("Leave (%d, %d)", w, h); |
---|
[4874] | 461 | return true; |
---|
[423] | 462 | } |
---|
| 463 | |
---|
[4874] | 464 | bool NanoVis::init(const char* path) |
---|
[848] | 465 | { |
---|
[2930] | 466 | // print OpenGL driver information |
---|
[3452] | 467 | TRACE("-----------------------------------------------------------"); |
---|
| 468 | TRACE("OpenGL version: %s", glGetString(GL_VERSION)); |
---|
| 469 | TRACE("OpenGL vendor: %s", glGetString(GL_VENDOR)); |
---|
| 470 | TRACE("OpenGL renderer: %s", glGetString(GL_RENDERER)); |
---|
| 471 | TRACE("-----------------------------------------------------------"); |
---|
[2822] | 472 | |
---|
[1111] | 473 | if (path == NULL) { |
---|
[3452] | 474 | ERROR("No path defined for shaders or resources"); |
---|
[4874] | 475 | return false; |
---|
[1111] | 476 | } |
---|
[848] | 477 | GLenum err = glewInit(); |
---|
| 478 | if (GLEW_OK != err) { |
---|
[3452] | 479 | ERROR("Can't init GLEW: %s", glewGetErrorString(err)); |
---|
[4874] | 480 | return false; |
---|
[848] | 481 | } |
---|
[3452] | 482 | TRACE("Using GLEW %s", glewGetString(GLEW_VERSION)); |
---|
[848] | 483 | |
---|
[2930] | 484 | // OpenGL 2.1 includes VBOs, PBOs, MRT, NPOT textures, point parameters, point sprites, |
---|
| 485 | // GLSL 1.2, and occlusion queries. |
---|
| 486 | if (!GLEW_VERSION_2_1) { |
---|
[3452] | 487 | ERROR("OpenGL version 2.1 or greater is required"); |
---|
[4874] | 488 | return false; |
---|
[2877] | 489 | } |
---|
[2930] | 490 | |
---|
[2962] | 491 | // NVIDIA driver may report OpenGL 2.1, but not support PBOs in |
---|
| 492 | // indirect GLX contexts |
---|
| 493 | if (!GLEW_ARB_pixel_buffer_object) { |
---|
[3452] | 494 | ERROR("Pixel buffer objects are not supported by driver, please check that the user running nanovis has permissions to create a direct rendering context (e.g. user has read/write access to /dev/nvidia* device nodes in Linux)."); |
---|
[4874] | 495 | return false; |
---|
[2962] | 496 | } |
---|
| 497 | |
---|
[2930] | 498 | // Additional extensions not in 2.1 core |
---|
| 499 | |
---|
| 500 | // Framebuffer objects were promoted in 3.0 |
---|
| 501 | if (!GLEW_EXT_framebuffer_object) { |
---|
[3452] | 502 | ERROR("EXT_framebuffer_oject extension is required"); |
---|
[4874] | 503 | return false; |
---|
[2877] | 504 | } |
---|
[2930] | 505 | // Rectangle textures were promoted in 3.1 |
---|
| 506 | // FIXME: can use NPOT in place of rectangle textures |
---|
[2884] | 507 | if (!GLEW_ARB_texture_rectangle) { |
---|
[3452] | 508 | ERROR("ARB_texture_rectangle extension is required"); |
---|
[4874] | 509 | return false; |
---|
[2884] | 510 | } |
---|
[2877] | 511 | #ifdef HAVE_FLOAT_TEXTURES |
---|
[2930] | 512 | // Float color buffers and textures were promoted in 3.0 |
---|
[2877] | 513 | if (!GLEW_ARB_texture_float || |
---|
| 514 | !GLEW_ARB_color_buffer_float) { |
---|
[3452] | 515 | ERROR("ARB_texture_float and ARB_color_buffer_float extensions are required"); |
---|
[4874] | 516 | return false; |
---|
[2877] | 517 | } |
---|
| 518 | #endif |
---|
[5394] | 519 | // FIXME: should use GLSL for portability |
---|
| 520 | #ifdef USE_ARB_PROGRAMS |
---|
| 521 | if (!GLEW_ARB_vertex_program || |
---|
| 522 | !GLEW_ARB_fragment_program) { |
---|
| 523 | ERROR("ARB_vertex_program and ARB_fragment_program extensions are required"); |
---|
| 524 | return false; |
---|
| 525 | } |
---|
| 526 | #else |
---|
[2882] | 527 | if (!GLEW_NV_vertex_program3 || |
---|
| 528 | !GLEW_NV_fragment_program2) { |
---|
[3452] | 529 | ERROR("NV_vertex_program3 and NV_fragment_program2 extensions are required"); |
---|
[4874] | 530 | return false; |
---|
[2882] | 531 | } |
---|
[5394] | 532 | #endif |
---|
[2877] | 533 | |
---|
[3463] | 534 | if (!FilePath::getInstance()->setPath(path)) { |
---|
[3452] | 535 | ERROR("can't set file path to %s", path); |
---|
[4874] | 536 | return false; |
---|
[848] | 537 | } |
---|
[1703] | 538 | |
---|
[2856] | 539 | ImageLoaderFactory::getInstance()->addLoaderImpl("bmp", new BMPImageLoaderImpl()); |
---|
| 540 | |
---|
[4874] | 541 | return true; |
---|
[848] | 542 | } |
---|
| 543 | |
---|
[4874] | 544 | bool |
---|
[2930] | 545 | NanoVis::initGL() |
---|
[1089] | 546 | { |
---|
[3452] | 547 | TRACE("in initGL"); |
---|
[1351] | 548 | //buffer to store data read from the screen |
---|
[2877] | 549 | if (screenBuffer) { |
---|
| 550 | delete[] screenBuffer; |
---|
| 551 | screenBuffer = NULL; |
---|
[1351] | 552 | } |
---|
[4937] | 553 | screenBuffer = new unsigned char[3*winWidth*winHeight]; |
---|
[2877] | 554 | assert(screenBuffer != NULL); |
---|
[427] | 555 | |
---|
[1351] | 556 | //create the camera with default setting |
---|
[4904] | 557 | _camera = new Camera(0, 0, winWidth, winHeight); |
---|
| 558 | _camera->setPosition(def_eye); |
---|
[226] | 559 | |
---|
[1351] | 560 | glEnable(GL_TEXTURE_2D); |
---|
| 561 | glShadeModel(GL_FLAT); |
---|
| 562 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
---|
[2930] | 563 | glClearColor(0, 0, 0, 1); |
---|
| 564 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
---|
[580] | 565 | |
---|
[1351] | 566 | //initialize lighting |
---|
| 567 | GLfloat mat_specular[] = {1.0, 1.0, 1.0, 1.0}; |
---|
| 568 | GLfloat mat_shininess[] = {30.0}; |
---|
| 569 | GLfloat white_light[] = {1.0, 1.0, 1.0, 1.0}; |
---|
[392] | 570 | |
---|
[1351] | 571 | glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); |
---|
| 572 | glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess); |
---|
| 573 | glLightfv(GL_LIGHT0, GL_DIFFUSE, white_light); |
---|
| 574 | glLightfv(GL_LIGHT0, GL_SPECULAR, white_light); |
---|
[4904] | 575 | glLightfv(GL_LIGHT1, GL_DIFFUSE, white_light); |
---|
[1351] | 576 | glLightfv(GL_LIGHT1, GL_SPECULAR, white_light); |
---|
[392] | 577 | |
---|
[4874] | 578 | //frame buffer object for offscreen rendering |
---|
| 579 | if (!initOffscreenBuffer()) { |
---|
| 580 | return false; |
---|
| 581 | } |
---|
[226] | 582 | |
---|
[4904] | 583 | fonts = new Fonts(); |
---|
| 584 | fonts->addFont("verdana", "verdana.fnt"); |
---|
| 585 | fonts->setFont("verdana"); |
---|
[418] | 586 | |
---|
[3463] | 587 | renderContext = new RenderContext(); |
---|
[2831] | 588 | |
---|
[4904] | 589 | volRenderer = new VolumeRenderer(); |
---|
| 590 | |
---|
[2877] | 591 | planeRenderer = new PlaneRenderer(winWidth, winHeight); |
---|
[431] | 592 | |
---|
[4904] | 593 | velocityArrowsSlice = new VelocityArrowsSlice(); |
---|
| 594 | |
---|
| 595 | licRenderer = new LIC(); |
---|
| 596 | |
---|
[5498] | 597 | #ifdef USE_ORIENTATION_INDICATOR |
---|
| 598 | orientationIndicator = new OrientationIndicator(); |
---|
| 599 | #endif |
---|
| 600 | |
---|
[4904] | 601 | grid = new Grid(); |
---|
| 602 | grid->setFont(fonts); |
---|
| 603 | |
---|
[1351] | 604 | //assert(glGetError()==0); |
---|
[448] | 605 | |
---|
[3452] | 606 | TRACE("leaving initGL"); |
---|
[4874] | 607 | |
---|
| 608 | return true; |
---|
[226] | 609 | } |
---|
| 610 | |
---|
[2951] | 611 | void |
---|
| 612 | NanoVis::draw3dAxis() |
---|
[834] | 613 | { |
---|
[4904] | 614 | if (!axisOn) |
---|
| 615 | return; |
---|
| 616 | |
---|
[2930] | 617 | glPushAttrib(GL_ENABLE_BIT); |
---|
| 618 | |
---|
[587] | 619 | glDisable(GL_TEXTURE_2D); |
---|
| 620 | glEnable(GL_DEPTH_TEST); |
---|
[2930] | 621 | glEnable(GL_COLOR_MATERIAL); |
---|
| 622 | glDisable(GL_BLEND); |
---|
[1089] | 623 | |
---|
[834] | 624 | //draw axes |
---|
| 625 | GLUquadric *obj; |
---|
[392] | 626 | |
---|
[834] | 627 | obj = gluNewQuadric(); |
---|
[1089] | 628 | |
---|
[834] | 629 | int segments = 50; |
---|
[1089] | 630 | |
---|
[834] | 631 | glColor3f(0.8, 0.8, 0.8); |
---|
| 632 | glPushMatrix(); |
---|
| 633 | glTranslatef(0.4, 0., 0.); |
---|
| 634 | glRotatef(90, 1, 0, 0); |
---|
| 635 | glRotatef(180, 0, 1, 0); |
---|
| 636 | glScalef(0.0005, 0.0005, 0.0005); |
---|
| 637 | glutStrokeCharacter(GLUT_STROKE_ROMAN, 'x'); |
---|
[1089] | 638 | glPopMatrix(); |
---|
| 639 | |
---|
[834] | 640 | glPushMatrix(); |
---|
| 641 | glTranslatef(0., 0.4, 0.); |
---|
| 642 | glRotatef(90, 1, 0, 0); |
---|
| 643 | glRotatef(180, 0, 1, 0); |
---|
| 644 | glScalef(0.0005, 0.0005, 0.0005); |
---|
| 645 | glutStrokeCharacter(GLUT_STROKE_ROMAN, 'y'); |
---|
[1089] | 646 | glPopMatrix(); |
---|
| 647 | |
---|
[834] | 648 | glPushMatrix(); |
---|
| 649 | glTranslatef(0., 0., 0.4); |
---|
| 650 | glRotatef(90, 1, 0, 0); |
---|
| 651 | glRotatef(180, 0, 1, 0); |
---|
| 652 | glScalef(0.0005, 0.0005, 0.0005); |
---|
| 653 | glutStrokeCharacter(GLUT_STROKE_ROMAN, 'z'); |
---|
[1089] | 654 | glPopMatrix(); |
---|
| 655 | |
---|
[834] | 656 | glEnable(GL_LIGHTING); |
---|
| 657 | glEnable(GL_LIGHT0); |
---|
[1089] | 658 | |
---|
[834] | 659 | //glColor3f(0.2, 0.2, 0.8); |
---|
| 660 | glPushMatrix(); |
---|
| 661 | glutSolidSphere(0.02, segments, segments ); |
---|
| 662 | glPopMatrix(); |
---|
[1089] | 663 | |
---|
[834] | 664 | glPushMatrix(); |
---|
[1089] | 665 | glRotatef(-90, 1, 0, 0); |
---|
[834] | 666 | gluCylinder(obj, 0.01, 0.01, 0.3, segments, segments); |
---|
[1089] | 667 | glPopMatrix(); |
---|
| 668 | |
---|
[834] | 669 | glPushMatrix(); |
---|
| 670 | glTranslatef(0., 0.3, 0.); |
---|
[1089] | 671 | glRotatef(-90, 1, 0, 0); |
---|
[834] | 672 | gluCylinder(obj, 0.02, 0.0, 0.06, segments, segments); |
---|
[1089] | 673 | glPopMatrix(); |
---|
| 674 | |
---|
[834] | 675 | glPushMatrix(); |
---|
| 676 | glRotatef(90, 0, 1, 0); |
---|
| 677 | gluCylinder(obj, 0.01, 0.01, 0.3, segments, segments); |
---|
[1089] | 678 | glPopMatrix(); |
---|
| 679 | |
---|
[834] | 680 | glPushMatrix(); |
---|
| 681 | glTranslatef(0.3, 0., 0.); |
---|
[1089] | 682 | glRotatef(90, 0, 1, 0); |
---|
[834] | 683 | gluCylinder(obj, 0.02, 0.0, 0.06, segments, segments); |
---|
[1089] | 684 | glPopMatrix(); |
---|
| 685 | |
---|
[834] | 686 | glPushMatrix(); |
---|
| 687 | gluCylinder(obj, 0.01, 0.01, 0.3, segments, segments); |
---|
[1089] | 688 | glPopMatrix(); |
---|
| 689 | |
---|
[834] | 690 | glPushMatrix(); |
---|
| 691 | glTranslatef(0., 0., 0.3); |
---|
| 692 | gluCylinder(obj, 0.02, 0.0, 0.06, segments, segments); |
---|
[1089] | 693 | glPopMatrix(); |
---|
| 694 | |
---|
[834] | 695 | gluDeleteQuadric(obj); |
---|
[1089] | 696 | |
---|
[2930] | 697 | glPopAttrib(); |
---|
[392] | 698 | } |
---|
| 699 | |
---|
[884] | 700 | void NanoVis::update() |
---|
| 701 | { |
---|
[2975] | 702 | VolumeInterpolator *volInterp = volRenderer->getVolumeInterpolator(); |
---|
| 703 | if (volInterp->isStarted()) { |
---|
[887] | 704 | struct timeval clock; |
---|
| 705 | gettimeofday(&clock, NULL); |
---|
[5400] | 706 | double elapsed_time = clock.tv_sec + clock.tv_usec/1000000.0 - |
---|
[2975] | 707 | volInterp->getStartTime(); |
---|
[1089] | 708 | |
---|
[5400] | 709 | TRACE("%g %g", elapsed_time, |
---|
[2975] | 710 | volInterp->getInterval()); |
---|
[5400] | 711 | double fraction; |
---|
| 712 | double f = fmod(elapsed_time, volInterp->getInterval()); |
---|
[900] | 713 | if (f == 0.0) { |
---|
[5400] | 714 | fraction = 0.0; |
---|
[887] | 715 | } else { |
---|
[2975] | 716 | fraction = f / volInterp->getInterval(); |
---|
[887] | 717 | } |
---|
[5400] | 718 | TRACE("fraction : %g", fraction); |
---|
| 719 | volInterp->update((float)fraction); |
---|
[887] | 720 | } |
---|
[884] | 721 | } |
---|
| 722 | |
---|
[5402] | 723 | /** |
---|
| 724 | * \brief Called when new volumes are added to update ranges |
---|
| 725 | */ |
---|
[932] | 726 | void |
---|
[2877] | 727 | NanoVis::setVolumeRanges() |
---|
[932] | 728 | { |
---|
[5402] | 729 | TRACE("Enter"); |
---|
[1089] | 730 | |
---|
[5402] | 731 | double xMin, xMax, yMin, yMax, zMin, zMax; |
---|
| 732 | xMin = yMin = zMin = DBL_MAX; |
---|
| 733 | xMax = yMax = zMax = -DBL_MAX; |
---|
| 734 | double valueMin = DBL_MAX, valueMax = -DBL_MAX; |
---|
[3567] | 735 | VolumeHashmap::iterator itr; |
---|
| 736 | for (itr = volumeTable.begin(); |
---|
| 737 | itr != volumeTable.end(); ++itr) { |
---|
| 738 | Volume *volume = itr->second; |
---|
| 739 | if (xMin > volume->xAxis.min()) { |
---|
| 740 | xMin = volume->xAxis.min(); |
---|
[1089] | 741 | } |
---|
[3567] | 742 | if (xMax < volume->xAxis.max()) { |
---|
| 743 | xMax = volume->xAxis.max(); |
---|
[1089] | 744 | } |
---|
[3567] | 745 | if (yMin > volume->yAxis.min()) { |
---|
| 746 | yMin = volume->yAxis.min(); |
---|
[1089] | 747 | } |
---|
[3567] | 748 | if (yMax < volume->yAxis.max()) { |
---|
| 749 | yMax = volume->yAxis.max(); |
---|
[1089] | 750 | } |
---|
[3567] | 751 | if (zMin > volume->zAxis.min()) { |
---|
| 752 | zMin = volume->zAxis.min(); |
---|
[1089] | 753 | } |
---|
[3567] | 754 | if (zMax < volume->zAxis.max()) { |
---|
| 755 | zMax = volume->zAxis.max(); |
---|
[1089] | 756 | } |
---|
[5402] | 757 | if (valueMin > volume->wAxis.min()) { |
---|
| 758 | valueMin = volume->wAxis.min(); |
---|
[1089] | 759 | } |
---|
[5402] | 760 | if (valueMax < volume->wAxis.max()) { |
---|
| 761 | valueMax = volume->wAxis.max(); |
---|
[1089] | 762 | } |
---|
[932] | 763 | } |
---|
| 764 | if ((xMin < DBL_MAX) && (xMax > -DBL_MAX)) { |
---|
[2923] | 765 | grid->xAxis.setScale(xMin, xMax); |
---|
[932] | 766 | } |
---|
| 767 | if ((yMin < DBL_MAX) && (yMax > -DBL_MAX)) { |
---|
[2923] | 768 | grid->yAxis.setScale(yMin, yMax); |
---|
[932] | 769 | } |
---|
| 770 | if ((zMin < DBL_MAX) && (zMax > -DBL_MAX)) { |
---|
[2923] | 771 | grid->zAxis.setScale(zMin, zMax); |
---|
[932] | 772 | } |
---|
[5402] | 773 | if ((valueMin < DBL_MAX) && (valueMax > -DBL_MAX)) { |
---|
| 774 | Volume::valueMin = valueMin; |
---|
| 775 | Volume::valueMax = valueMax; |
---|
[932] | 776 | } |
---|
[2877] | 777 | Volume::updatePending = false; |
---|
[3453] | 778 | TRACE("Leave"); |
---|
[932] | 779 | } |
---|
| 780 | |
---|
[5402] | 781 | /** |
---|
| 782 | * \brief Called when new heightmaps are added to update ranges |
---|
| 783 | */ |
---|
[932] | 784 | void |
---|
[2877] | 785 | NanoVis::setHeightmapRanges() |
---|
[932] | 786 | { |
---|
[5402] | 787 | TRACE("Enter"); |
---|
[1089] | 788 | |
---|
[5402] | 789 | double xMin, xMax, yMin, yMax, zMin, zMax; |
---|
| 790 | xMin = yMin = zMin = DBL_MAX; |
---|
| 791 | xMax = yMax = zMax = -DBL_MAX; |
---|
| 792 | double valueMin = DBL_MAX, valueMax = -DBL_MAX; |
---|
[3567] | 793 | HeightMapHashmap::iterator itr; |
---|
| 794 | for (itr = heightMapTable.begin(); |
---|
| 795 | itr != heightMapTable.end(); ++itr) { |
---|
| 796 | HeightMap *heightMap = itr->second; |
---|
| 797 | if (xMin > heightMap->xAxis.min()) { |
---|
| 798 | xMin = heightMap->xAxis.min(); |
---|
[1089] | 799 | } |
---|
[3567] | 800 | if (xMax < heightMap->xAxis.max()) { |
---|
| 801 | xMax = heightMap->xAxis.max(); |
---|
[1089] | 802 | } |
---|
[3567] | 803 | if (yMin > heightMap->yAxis.min()) { |
---|
| 804 | yMin = heightMap->yAxis.min(); |
---|
[1089] | 805 | } |
---|
[3567] | 806 | if (yMax < heightMap->yAxis.max()) { |
---|
| 807 | yMax = heightMap->yAxis.max(); |
---|
[1089] | 808 | } |
---|
[3567] | 809 | if (zMin > heightMap->zAxis.min()) { |
---|
| 810 | zMin = heightMap->zAxis.min(); |
---|
[1089] | 811 | } |
---|
[3567] | 812 | if (zMax < heightMap->zAxis.max()) { |
---|
| 813 | zMax = heightMap->zAxis.max(); |
---|
[1089] | 814 | } |
---|
[5402] | 815 | if (valueMin > heightMap->wAxis.min()) { |
---|
| 816 | valueMin = heightMap->wAxis.min(); |
---|
[1089] | 817 | } |
---|
[5402] | 818 | if (valueMax < heightMap->wAxis.max()) { |
---|
| 819 | valueMax = heightMap->wAxis.max(); |
---|
[1089] | 820 | } |
---|
[932] | 821 | } |
---|
| 822 | if ((xMin < DBL_MAX) && (xMax > -DBL_MAX)) { |
---|
[2923] | 823 | grid->xAxis.setScale(xMin, xMax); |
---|
[932] | 824 | } |
---|
| 825 | if ((yMin < DBL_MAX) && (yMax > -DBL_MAX)) { |
---|
[2923] | 826 | grid->yAxis.setScale(yMin, yMax); |
---|
[932] | 827 | } |
---|
| 828 | if ((zMin < DBL_MAX) && (zMax > -DBL_MAX)) { |
---|
[2923] | 829 | grid->zAxis.setScale(zMin, zMax); |
---|
[932] | 830 | } |
---|
[5402] | 831 | if ((valueMin < DBL_MAX) && (valueMax > -DBL_MAX)) { |
---|
| 832 | HeightMap::valueMin = valueMin; |
---|
| 833 | HeightMap::valueMax = valueMax; |
---|
[932] | 834 | } |
---|
[3567] | 835 | for (HeightMapHashmap::iterator itr = heightMapTable.begin(); |
---|
| 836 | itr != heightMapTable.end(); ++itr) { |
---|
| 837 | itr->second->mapToGrid(grid); |
---|
[1111] | 838 | } |
---|
[2877] | 839 | HeightMap::updatePending = false; |
---|
[3453] | 840 | TRACE("Leave"); |
---|
[932] | 841 | } |
---|
| 842 | |
---|
[1089] | 843 | void |
---|
[3492] | 844 | NanoVis::collectBounds(bool onlyVisible) |
---|
| 845 | { |
---|
[4904] | 846 | if (Flow::updatePending) { |
---|
| 847 | setFlowRanges(); |
---|
[3492] | 848 | grid->xAxis.setScale(xMin, xMax); |
---|
| 849 | grid->yAxis.setScale(yMin, yMax); |
---|
| 850 | grid->zAxis.setScale(zMin, zMax); |
---|
| 851 | } |
---|
| 852 | |
---|
[5402] | 853 | sceneBounds.makeEmpty(); |
---|
[3492] | 854 | |
---|
[3567] | 855 | for (VolumeHashmap::iterator itr = volumeTable.begin(); |
---|
| 856 | itr != volumeTable.end(); ++itr) { |
---|
| 857 | Volume *volume = itr->second; |
---|
[3492] | 858 | |
---|
[3567] | 859 | if (onlyVisible && !volume->visible()) |
---|
[3492] | 860 | continue; |
---|
| 861 | |
---|
[5402] | 862 | BBox bbox; |
---|
| 863 | volume->getWorldSpaceBounds(bbox.min, bbox.max); |
---|
| 864 | sceneBounds.extend(bbox); |
---|
[3492] | 865 | } |
---|
| 866 | |
---|
[3567] | 867 | for (HeightMapHashmap::iterator itr = heightMapTable.begin(); |
---|
| 868 | itr != heightMapTable.end(); ++itr) { |
---|
| 869 | HeightMap *heightMap = itr->second; |
---|
[3492] | 870 | |
---|
| 871 | if (onlyVisible && !heightMap->isVisible()) |
---|
| 872 | continue; |
---|
| 873 | |
---|
[5402] | 874 | BBox bbox; |
---|
| 875 | heightMap->getWorldSpaceBounds(bbox.min, bbox.max); |
---|
| 876 | sceneBounds.extend(bbox); |
---|
[3492] | 877 | } |
---|
| 878 | |
---|
[5485] | 879 | for (FlowHashmap::iterator itr = flowTable.begin(); |
---|
| 880 | itr != flowTable.end(); ++itr) { |
---|
| 881 | Flow *flow = itr->second; |
---|
[5402] | 882 | |
---|
[5485] | 883 | BBox bbox; |
---|
| 884 | flow->getBounds(bbox.min, bbox.max, onlyVisible); |
---|
| 885 | sceneBounds.extend(bbox); |
---|
| 886 | } |
---|
| 887 | |
---|
[5402] | 888 | #if 0 |
---|
| 889 | if (!onlyVisible || grid->isVisible()) { |
---|
| 890 | BBox bbox; |
---|
| 891 | grid->getBounds(bbox.min, bbox.max); |
---|
| 892 | sceneBounds.extend(bbox); |
---|
[3492] | 893 | } |
---|
[5402] | 894 | #endif |
---|
[3492] | 895 | |
---|
[5402] | 896 | if (sceneBounds.isEmpty()) { |
---|
| 897 | sceneBounds.min.set(-0.5, -0.5, -0.5); |
---|
| 898 | sceneBounds.max.set( 0.5, 0.5, 0.5); |
---|
[3492] | 899 | } |
---|
| 900 | |
---|
| 901 | TRACE("Scene bounds: (%g,%g,%g) - (%g,%g,%g)", |
---|
[5402] | 902 | sceneBounds.min.x, sceneBounds.min.y, sceneBounds.min.z, |
---|
| 903 | sceneBounds.max.x, sceneBounds.max.y, sceneBounds.max.z); |
---|
[3492] | 904 | } |
---|
| 905 | |
---|
| 906 | void |
---|
[3478] | 907 | NanoVis::setBgColor(float color[3]) |
---|
| 908 | { |
---|
| 909 | TRACE("Setting bgcolor to %g %g %g", color[0], color[1], color[2]); |
---|
| 910 | glClearColor(color[0], color[1], color[2], 1); |
---|
| 911 | } |
---|
| 912 | |
---|
[4874] | 913 | void |
---|
| 914 | NanoVis::removeVolume(Volume *volume) |
---|
| 915 | { |
---|
| 916 | VolumeHashmap::iterator itr = volumeTable.find(volume->name()); |
---|
| 917 | if (itr != volumeTable.end()) { |
---|
| 918 | volumeTable.erase(itr); |
---|
| 919 | } |
---|
| 920 | delete volume; |
---|
| 921 | } |
---|
| 922 | |
---|
[4612] | 923 | Flow * |
---|
| 924 | NanoVis::getFlow(const char *name) |
---|
| 925 | { |
---|
| 926 | FlowHashmap::iterator itr = flowTable.find(name); |
---|
| 927 | if (itr == flowTable.end()) { |
---|
| 928 | TRACE("Can't find flow '%s'", name); |
---|
| 929 | return NULL; |
---|
| 930 | } |
---|
| 931 | return itr->second; |
---|
| 932 | } |
---|
| 933 | |
---|
| 934 | Flow * |
---|
| 935 | NanoVis::createFlow(Tcl_Interp *interp, const char *name) |
---|
| 936 | { |
---|
| 937 | FlowHashmap::iterator itr = flowTable.find(name); |
---|
| 938 | if (itr != flowTable.end()) { |
---|
| 939 | ERROR("Flow '%s' already exists", name); |
---|
| 940 | return NULL; |
---|
| 941 | } |
---|
| 942 | Flow *flow = new Flow(interp, name); |
---|
| 943 | flowTable[name] = flow; |
---|
| 944 | return flow; |
---|
| 945 | } |
---|
| 946 | |
---|
| 947 | /** |
---|
| 948 | * \brief Delete flow object and hash table entry |
---|
| 949 | * |
---|
| 950 | * This is called by the flow command instance delete callback |
---|
| 951 | */ |
---|
[3478] | 952 | void |
---|
[4612] | 953 | NanoVis::deleteFlow(const char *name) |
---|
| 954 | { |
---|
| 955 | FlowHashmap::iterator itr = flowTable.find(name); |
---|
| 956 | if (itr != flowTable.end()) { |
---|
| 957 | delete itr->second; |
---|
| 958 | flowTable.erase(itr); |
---|
| 959 | } |
---|
| 960 | } |
---|
| 961 | |
---|
| 962 | /** |
---|
| 963 | * \brief Delete all flow object commands |
---|
| 964 | * |
---|
| 965 | * This will also delete the flow objects and hash table entries |
---|
| 966 | */ |
---|
| 967 | void |
---|
| 968 | NanoVis::deleteFlows(Tcl_Interp *interp) |
---|
| 969 | { |
---|
| 970 | FlowHashmap::iterator itr; |
---|
| 971 | for (itr = flowTable.begin(); |
---|
| 972 | itr != flowTable.end(); ++itr) { |
---|
| 973 | Tcl_DeleteCommandFromToken(interp, itr->second->getCommandToken()); |
---|
| 974 | } |
---|
| 975 | flowTable.clear(); |
---|
| 976 | } |
---|
| 977 | |
---|
[5402] | 978 | /** |
---|
| 979 | * \brief Called when new flows are added to update ranges |
---|
| 980 | */ |
---|
[4612] | 981 | bool |
---|
[4904] | 982 | NanoVis::setFlowRanges() |
---|
[4612] | 983 | { |
---|
| 984 | TRACE("Enter"); |
---|
| 985 | |
---|
| 986 | /* |
---|
| 987 | * Step 1. Get the overall min and max magnitudes of all the |
---|
| 988 | * flow vectors. |
---|
| 989 | */ |
---|
[5489] | 990 | Flow::magMin = DBL_MAX; |
---|
| 991 | Flow::magMax = -DBL_MAX; |
---|
[4612] | 992 | |
---|
| 993 | for (FlowHashmap::iterator itr = flowTable.begin(); |
---|
| 994 | itr != flowTable.end(); ++itr) { |
---|
| 995 | Flow *flow = itr->second; |
---|
| 996 | if (!flow->isDataLoaded()) { |
---|
| 997 | continue; |
---|
| 998 | } |
---|
[4893] | 999 | Unirect3d *data = flow->data(); |
---|
[5402] | 1000 | double range[2]; |
---|
| 1001 | range[0] = data->magMin(); |
---|
| 1002 | range[1] = data->magMax(); |
---|
[5489] | 1003 | if (range[0] < Flow::magMin) { |
---|
| 1004 | Flow::magMin = range[0]; |
---|
[4612] | 1005 | } |
---|
[5500] | 1006 | if (range[1] > Flow::magMax) { |
---|
| 1007 | Flow::magMax = range[1]; |
---|
[4612] | 1008 | } |
---|
| 1009 | if (data->xMin() < xMin) { |
---|
| 1010 | xMin = data->xMin(); |
---|
| 1011 | } |
---|
| 1012 | if (data->yMin() < yMin) { |
---|
| 1013 | yMin = data->yMin(); |
---|
| 1014 | } |
---|
| 1015 | if (data->zMin() < zMin) { |
---|
| 1016 | zMin = data->zMin(); |
---|
| 1017 | } |
---|
| 1018 | if (data->xMax() > xMax) { |
---|
| 1019 | xMax = data->xMax(); |
---|
| 1020 | } |
---|
| 1021 | if (data->yMax() > yMax) { |
---|
| 1022 | yMax = data->yMax(); |
---|
| 1023 | } |
---|
| 1024 | if (data->zMax() > zMax) { |
---|
| 1025 | zMax = data->zMax(); |
---|
| 1026 | } |
---|
| 1027 | } |
---|
| 1028 | |
---|
[5489] | 1029 | TRACE("magMin=%g magMax=%g", Flow::magMin, Flow::magMax); |
---|
[4612] | 1030 | |
---|
| 1031 | /* |
---|
| 1032 | * Step 2. Generate the vector field from each data set. |
---|
| 1033 | */ |
---|
| 1034 | for (FlowHashmap::iterator itr = flowTable.begin(); |
---|
| 1035 | itr != flowTable.end(); ++itr) { |
---|
| 1036 | Flow *flow = itr->second; |
---|
| 1037 | if (!flow->isDataLoaded()) { |
---|
| 1038 | continue; // Flow exists, but no data has been loaded yet. |
---|
| 1039 | } |
---|
| 1040 | if (flow->visible()) { |
---|
| 1041 | flow->initializeParticles(); |
---|
| 1042 | } |
---|
| 1043 | if (!flow->scaleVectorField()) { |
---|
| 1044 | return false; |
---|
| 1045 | } |
---|
| 1046 | // FIXME: This doesn't work when there is more than one flow. |
---|
[4904] | 1047 | licRenderer->setSlicePosition(flow->getRelativePosition()); |
---|
| 1048 | velocityArrowsSlice->setSlicePosition(flow->getRelativePosition()); |
---|
[4612] | 1049 | } |
---|
| 1050 | advectFlows(); |
---|
[4904] | 1051 | |
---|
| 1052 | Flow::updatePending = false; |
---|
[4612] | 1053 | return true; |
---|
| 1054 | } |
---|
| 1055 | |
---|
| 1056 | void |
---|
| 1057 | NanoVis::renderFlows() |
---|
| 1058 | { |
---|
| 1059 | for (FlowHashmap::iterator itr = flowTable.begin(); |
---|
| 1060 | itr != flowTable.end(); ++itr) { |
---|
| 1061 | Flow *flow = itr->second; |
---|
| 1062 | if (flow->isDataLoaded() && flow->visible()) { |
---|
| 1063 | flow->render(); |
---|
| 1064 | } |
---|
| 1065 | } |
---|
| 1066 | } |
---|
| 1067 | |
---|
| 1068 | void |
---|
| 1069 | NanoVis::resetFlows() |
---|
| 1070 | { |
---|
[4904] | 1071 | NanoVis::licRenderer->reset(); |
---|
[4612] | 1072 | for (FlowHashmap::iterator itr = flowTable.begin(); |
---|
| 1073 | itr != flowTable.end(); ++itr) { |
---|
| 1074 | Flow *flow = itr->second; |
---|
[4904] | 1075 | if (flow->isDataLoaded()) { |
---|
[4612] | 1076 | flow->resetParticles(); |
---|
| 1077 | } |
---|
| 1078 | } |
---|
| 1079 | } |
---|
| 1080 | |
---|
| 1081 | void |
---|
| 1082 | NanoVis::advectFlows() |
---|
| 1083 | { |
---|
[5405] | 1084 | TRACE("Enter"); |
---|
[4612] | 1085 | for (FlowHashmap::iterator itr = flowTable.begin(); |
---|
| 1086 | itr != flowTable.end(); ++itr) { |
---|
| 1087 | Flow *flow = itr->second; |
---|
[4904] | 1088 | if (flow->isDataLoaded()) { |
---|
[4612] | 1089 | flow->advect(); |
---|
| 1090 | } |
---|
| 1091 | } |
---|
| 1092 | } |
---|
| 1093 | |
---|
| 1094 | void |
---|
[3497] | 1095 | NanoVis::render() |
---|
[226] | 1096 | { |
---|
[3452] | 1097 | TRACE("Enter"); |
---|
| 1098 | |
---|
[4904] | 1099 | if (Flow::updatePending) { |
---|
| 1100 | setFlowRanges(); |
---|
[2923] | 1101 | grid->xAxis.setScale(xMin, xMax); |
---|
| 1102 | grid->yAxis.setScale(yMin, yMax); |
---|
| 1103 | grid->zAxis.setScale(zMin, zMax); |
---|
[1431] | 1104 | } |
---|
[2877] | 1105 | if (HeightMap::updatePending) { |
---|
| 1106 | setHeightmapRanges(); |
---|
[932] | 1107 | } |
---|
[2877] | 1108 | if (Volume::updatePending) { |
---|
| 1109 | setVolumeRanges(); |
---|
[932] | 1110 | } |
---|
[2930] | 1111 | |
---|
[4904] | 1112 | // Start final rendering |
---|
[2930] | 1113 | |
---|
| 1114 | // Need to reset fbo since it may have been changed to default (0) |
---|
| 1115 | bindOffscreenBuffer(); |
---|
| 1116 | |
---|
[4904] | 1117 | // Clear screen |
---|
[4612] | 1118 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
---|
[226] | 1119 | |
---|
[3567] | 1120 | glEnable(GL_DEPTH_TEST); |
---|
| 1121 | glEnable(GL_COLOR_MATERIAL); |
---|
[1028] | 1122 | |
---|
[4904] | 1123 | // Emit modelview and projection matrices |
---|
| 1124 | _camera->initialize(); |
---|
[1089] | 1125 | |
---|
[4904] | 1126 | // Rotate for updir if required |
---|
[3567] | 1127 | glPushMatrix(); |
---|
[2863] | 1128 | |
---|
[4904] | 1129 | switch (_camera->getUpdir()) { |
---|
| 1130 | case Camera::X_POS: |
---|
[3567] | 1131 | glRotatef(90, 0, 0, 1); |
---|
| 1132 | glRotatef(90, 1, 0, 0); |
---|
| 1133 | break; |
---|
[4904] | 1134 | case Camera::Y_POS: |
---|
[3567] | 1135 | // this is the default |
---|
| 1136 | break; |
---|
[4904] | 1137 | case Camera::Z_POS: |
---|
[3567] | 1138 | glRotatef(-90, 1, 0, 0); |
---|
| 1139 | glRotatef(-90, 0, 0, 1); |
---|
| 1140 | break; |
---|
[4904] | 1141 | case Camera::X_NEG: |
---|
[3567] | 1142 | glRotatef(-90, 0, 0, 1); |
---|
| 1143 | break; |
---|
[4904] | 1144 | case Camera::Y_NEG: |
---|
[3567] | 1145 | glRotatef(180, 0, 0, 1); |
---|
| 1146 | glRotatef(-90, 0, 1, 0); |
---|
| 1147 | break; |
---|
[4904] | 1148 | case Camera::Z_NEG: |
---|
[3567] | 1149 | glRotatef(90, 1, 0, 0); |
---|
| 1150 | break; |
---|
| 1151 | } |
---|
[1089] | 1152 | |
---|
[4904] | 1153 | // Now render things in the scene |
---|
[5498] | 1154 | #ifdef USE_ORIENTATION_INDICATOR |
---|
| 1155 | orientationIndicator->setPosition(sceneBounds.getCenter()); |
---|
| 1156 | orientationIndicator->setScale(sceneBounds.getSize()); |
---|
| 1157 | orientationIndicator->render(); |
---|
| 1158 | #else |
---|
[4904] | 1159 | draw3dAxis(); |
---|
[5498] | 1160 | #endif |
---|
[4904] | 1161 | |
---|
[4874] | 1162 | grid->render(); |
---|
[4904] | 1163 | |
---|
| 1164 | licRenderer->render(); |
---|
| 1165 | |
---|
| 1166 | velocityArrowsSlice->render(); |
---|
| 1167 | |
---|
[4874] | 1168 | renderFlows(); |
---|
[1370] | 1169 | |
---|
[3567] | 1170 | volRenderer->renderAll(); |
---|
[1089] | 1171 | |
---|
[4904] | 1172 | for (HeightMapHashmap::iterator itr = heightMapTable.begin(); |
---|
[3567] | 1173 | itr != heightMapTable.end(); ++itr) { |
---|
[4904] | 1174 | itr->second->render(renderContext); |
---|
[834] | 1175 | } |
---|
[3567] | 1176 | glPopMatrix(); |
---|
[2831] | 1177 | |
---|
[1984] | 1178 | CHECK_FRAMEBUFFER_STATUS(); |
---|
[3452] | 1179 | TRACE("Leave"); |
---|
[4904] | 1180 | redrawPending = false; |
---|
[226] | 1181 | } |
---|