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