[37] | 1 | /* |
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| 2 | |
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| 3 | Brian Curless |
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| 4 | |
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| 5 | Computer Graphics Laboratory |
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| 6 | Stanford University |
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| 7 | |
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| 8 | --------------------------------------------------------------------- |
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| 9 | |
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| 10 | Copyright (1997) The Board of Trustees of the Leland Stanford Junior |
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| 11 | University. Except for commercial resale, lease, license or other |
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| 12 | commercial transactions, permission is hereby given to use, copy, |
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| 13 | modify this software for academic purposes only. No part of this |
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| 14 | software or any derivatives thereof may be used in the production of |
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| 15 | computer models for resale or for use in a commercial |
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| 16 | product. STANFORD MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND |
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| 17 | CONCERNING THIS SOFTWARE. No support is implied or provided. |
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| 18 | |
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| 19 | */ |
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| 20 | |
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| 21 | |
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| 22 | #include <unistd.h> |
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| 23 | #include <stdio.h> |
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| 24 | #include <malloc.h> |
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| 25 | #include <sys/times.h> |
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| 26 | #include <sys/types.h> |
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| 27 | #include <math.h> |
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| 28 | #include <time.h> |
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| 29 | |
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| 30 | #include "plyio.h" |
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| 31 | #include "DepthMap.h" |
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| 32 | #include "OccGrid.h" |
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| 33 | #include "renderGeom.h" |
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| 34 | #include "defines.h" |
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| 35 | #include "Matrix4f.h" |
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| 36 | #include "vrip.h" |
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| 37 | #include "vripGlobals.h" |
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| 38 | #include "linePersp.h" |
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| 39 | #include "perspective.h" |
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| 40 | |
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| 41 | #include "sl_export.H" |
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| 42 | #include "sl_vertex.H" |
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| 43 | #include "sl_texture.H" |
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| 44 | #include "sl_framebuffer.H" |
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| 45 | |
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| 46 | |
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| 47 | static FB_IntensityBuffer theZBuffer; |
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| 48 | |
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| 49 | static int ClockWise; |
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| 50 | |
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| 51 | static clock_t tm; |
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| 52 | static void start_time(); |
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| 53 | static void end_time(); |
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| 54 | static float time_elapsed(); |
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| 55 | void Clear(FB_IntensityBuffer *buffer, Real Z, Real I); |
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| 56 | void drawMeshConfidence(Mesh *mesh, FB_IntensityBuffer *zbuffer); |
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| 57 | void drawMeshEdgeSteps(Mesh *mesh, FB_IntensityBuffer *zbuffer); |
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| 58 | void drawMeshNx(Mesh *mesh, FB_IntensityBuffer *zbuffer); |
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| 59 | void drawMeshNy(Mesh *mesh, FB_IntensityBuffer *zbuffer); |
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| 60 | void drawMeshNz(Mesh *mesh, FB_IntensityBuffer *zbuffer); |
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| 61 | |
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| 62 | const int SCREEN_XDIM = 1280; |
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| 63 | const int SCREEN_YDIM = 1024; |
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| 64 | |
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| 65 | void transformVerts(Mesh *mesh, Matrix4f *mfinal); |
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| 66 | void transformNorms(Mesh *mesh, Matrix4f *mrot); |
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| 67 | void transformVertsLinePersp(Mesh *mesh, Matrix4f &mmodel, Matrix4f &mvport); |
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| 68 | void transformVertsPersp(Mesh *mesh, Matrix4f &mmodel, Matrix4f &mvport); |
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| 69 | |
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| 70 | static void |
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| 71 | start_time() |
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| 72 | { |
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| 73 | struct tms buffer; |
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| 74 | times(&buffer); |
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| 75 | tm = buffer.tms_utime; |
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| 76 | } |
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| 77 | |
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| 78 | static void |
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| 79 | end_time() |
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| 80 | { |
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| 81 | struct tms buffer; |
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| 82 | times(&buffer); |
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| 83 | tm = buffer.tms_utime - tm; |
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| 84 | } |
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| 85 | |
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| 86 | static float |
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| 87 | time_elapsed() |
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| 88 | { |
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| 89 | return (double) tm / (double) CLOCKS_PER_SEC; |
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| 90 | } |
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| 91 | |
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| 92 | |
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| 93 | void |
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| 94 | prepareRender(Mesh *mesh, OrthoShear *shear, BBox3f *bbox, |
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| 95 | float resolution, DepthMap *dm, int useNorms) |
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| 96 | { |
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| 97 | int xdim, ydim, xorg, yorg; |
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| 98 | float new_xnur, new_ynur; |
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| 99 | |
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| 100 | xdim = int(ceil((bbox->nur.x - bbox->fll.x)/resolution) + 3); |
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| 101 | ydim = int(ceil((bbox->nur.y - bbox->fll.y)/resolution) + 3); |
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| 102 | |
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| 103 | if (dm == NULL) |
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| 104 | dm = new DepthMap(xdim, ydim, useNorms, DEPTH_TREE_GRANULARITY); |
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| 105 | else |
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| 106 | dm->reuse(xdim, ydim); |
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| 107 | |
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| 108 | dm->origin[0] = (int(bbox->fll[0]/resolution)-1)*resolution; |
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| 109 | dm->origin[1] = (int(bbox->fll[1]/resolution)-1)*resolution; |
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| 110 | dm->resolution = resolution; |
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| 111 | dm->linePersp = 0; |
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| 112 | dm->perspective = 0; |
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| 113 | |
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| 114 | theZBuffer.width = xdim; |
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| 115 | theZBuffer.height = ydim; |
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| 116 | theZBuffer.sampleZI = (FB_SampleZI *)dm->elems; |
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| 117 | |
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| 118 | new_xnur = (xdim-1)*resolution + bbox->fll.x; |
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| 119 | new_ynur = (ydim-1)*resolution + bbox->fll.y; |
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| 120 | |
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| 121 | if (Verbose) |
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| 122 | printf("BBox: (%f, %f, %f) -> (%f, %f, %f)\n", |
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| 123 | bbox->fll.x, bbox->fll.y, bbox->fll.z, |
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| 124 | new_xnur, new_ynur, bbox->nur.z); |
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| 125 | |
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| 126 | Matrix4f mrot; |
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| 127 | mesh->quat.toMatrix(mrot); |
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| 128 | |
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| 129 | if (useNorms) |
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| 130 | transformNorms(mesh, &mrot); |
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| 131 | |
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| 132 | Matrix4f mtrans; |
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| 133 | mtrans.makeIdentity(); |
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| 134 | mtrans.translate(mesh->trans); |
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| 135 | |
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| 136 | Matrix4f maxes; |
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| 137 | maxes.makeIdentity(); |
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| 138 | if (shear->axis == X_AXIS) { |
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| 139 | maxes.m[0][0] = 0; |
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| 140 | maxes.m[0][2] = 1; |
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| 141 | maxes.m[2][2] = 0; |
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| 142 | maxes.m[2][0] = 1; |
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| 143 | } |
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| 144 | else if (shear->axis == Y_AXIS) { |
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| 145 | maxes.m[1][1] = 0; |
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| 146 | maxes.m[1][2] = 1; |
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| 147 | maxes.m[2][2] = 0; |
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| 148 | maxes.m[2][1] = 1; |
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| 149 | } |
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| 150 | |
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| 151 | Matrix4f mflipz; |
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| 152 | mflipz.makeIdentity(); |
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| 153 | if (shear->flip) |
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| 154 | mflipz.m[2][2] = -1; |
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| 155 | |
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| 156 | Matrix4f msh; |
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| 157 | msh.makeIdentity(); |
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| 158 | msh.m[0][2] = shear->sx; |
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| 159 | msh.m[1][2] = shear->sy; |
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| 160 | |
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| 161 | //Matrix4f mztrans; |
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| 162 | //mztrans.makeIdentity(); |
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| 163 | //mztrans.m[2][3] = -frontRLEGrid->origin[2]; |
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| 164 | |
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| 165 | Matrix4f mfinal; |
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| 166 | mfinal.makeIdentity(); |
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| 167 | mfinal.multLeft(mrot); |
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| 168 | mfinal.multLeft(mtrans); |
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| 169 | mfinal.multLeft(maxes); |
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| 170 | mfinal.multLeft(mflipz); |
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| 171 | // mfinal.multLeft(mztrans); |
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| 172 | mfinal.multLeft(msh); |
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| 173 | |
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| 174 | if (Verbose) { |
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| 175 | printf("Transformation:\n"); |
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| 176 | mfinal.print(); |
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| 177 | } |
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| 178 | |
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| 179 | Matrix4f vtrans; |
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| 180 | vtrans.makeIdentity(); |
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| 181 | vtrans.translate(-dm->origin[0], -dm->origin[1], 0); |
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| 182 | Matrix4f vscale; |
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| 183 | vscale.makeIdentity(); |
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| 184 | vscale.setScale(1/resolution, 1/resolution, 1); |
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| 185 | |
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| 186 | mfinal.multLeft(vtrans); |
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| 187 | mfinal.multLeft(vscale); |
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| 188 | |
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| 189 | transformVerts(mesh, &mfinal); |
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| 190 | |
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| 191 | ClockWise = (shear->axis == Z_AXIS) ^ (shear->flip); |
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| 192 | } |
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| 193 | |
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| 194 | |
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| 195 | void |
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| 196 | prepareRenderLinePersp(Mesh *mesh, OrthoShear *shear, BBox3f *bbox, |
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| 197 | float resolution, DepthMap *dm, int useNorms) |
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| 198 | { |
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| 199 | int xdim, ydim, xorg, yorg; |
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| 200 | float new_xnur, new_ynur; |
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| 201 | |
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| 202 | xdim = int(ceil((bbox->nur.x - bbox->fll.x)/resolution) + 3); |
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| 203 | ydim = int(ceil((bbox->nur.y - bbox->fll.y)/resolution) + 3); |
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| 204 | |
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| 205 | if (dm == NULL) |
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| 206 | dm = new DepthMap(xdim, ydim, useNorms, DEPTH_TREE_GRANULARITY); |
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| 207 | else |
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| 208 | dm->reuse(xdim, ydim); |
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| 209 | |
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| 210 | dm->origin[0] = (int(bbox->fll[0]/resolution)-1)*resolution; |
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| 211 | dm->origin[1] = (int(bbox->fll[1]/resolution)-1)*resolution; |
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| 212 | dm->resolution = resolution; |
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| 213 | dm->linePersp = 1; |
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| 214 | dm->perspective = 0; |
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| 215 | |
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| 216 | theZBuffer.width = xdim; |
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| 217 | theZBuffer.height = ydim; |
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| 218 | theZBuffer.sampleZI = (FB_SampleZI *)dm->elems; |
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| 219 | |
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| 220 | new_xnur = (xdim-1)*resolution + bbox->fll.x; |
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| 221 | new_ynur = (ydim-1)*resolution + bbox->fll.y; |
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| 222 | |
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| 223 | if (Verbose) |
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| 224 | printf("BBox: (%f, %f, %f) -> (%f, %f, %f)\n", |
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| 225 | bbox->fll.x, bbox->fll.y, bbox->fll.z, |
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| 226 | new_xnur, new_ynur, bbox->nur.z); |
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| 227 | |
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| 228 | Matrix4f mmodel, mvport, mscale, mpermute, mflipz; |
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| 229 | Vec3f trans; |
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| 230 | |
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| 231 | mpermute.makeIdentity(); |
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| 232 | if (shear->axis == X_AXIS) { |
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| 233 | mpermute.m[0][0] = 0; |
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| 234 | mpermute.m[0][2] = 1; |
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| 235 | mpermute.m[2][2] = 0; |
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| 236 | mpermute.m[2][0] = 1; |
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| 237 | } |
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| 238 | else if (shear->axis == Y_AXIS) { |
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| 239 | mpermute.m[1][1] = 0; |
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| 240 | mpermute.m[1][2] = 1; |
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| 241 | mpermute.m[2][2] = 0; |
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| 242 | mpermute.m[2][1] = 1; |
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| 243 | } |
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| 244 | |
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| 245 | // Set up flip matrix |
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| 246 | |
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| 247 | mflipz.makeIdentity(); |
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| 248 | if (shear->flip) |
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| 249 | mflipz.m[2][2] = -1; |
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| 250 | |
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| 251 | mesh->quat.toMatrix(mmodel); |
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| 252 | |
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| 253 | if (useNorms) |
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| 254 | transformNorms(mesh, &mmodel); |
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| 255 | |
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| 256 | mmodel.translate(mesh->trans); |
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| 257 | mmodel.multLeft(mpermute); |
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| 258 | mmodel.multLeft(mflipz); |
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| 259 | |
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| 260 | trans.setValue(-dm->origin[0], -dm->origin[1], 0); |
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| 261 | mvport.makeIdentity(); |
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| 262 | mvport.translate(trans); |
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| 263 | mscale.makeIdentity(); |
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| 264 | mscale.scale(1/resolution, 1/resolution, 1); |
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| 265 | mvport.multLeft(mscale); |
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| 266 | |
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| 267 | transformVertsLinePersp(mesh, mmodel, mvport); |
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| 268 | |
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| 269 | ClockWise = (shear->axis == Z_AXIS) ^ (shear->flip); |
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| 270 | } |
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| 271 | |
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| 272 | |
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| 273 | void |
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| 274 | prepareRenderPersp(Mesh *mesh, OrthoShear *shear, BBox3f *bbox, |
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| 275 | float resolution, DepthMap *dm, int useNorms) |
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| 276 | { |
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| 277 | int xdim, ydim, xorg, yorg; |
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| 278 | float new_xnur, new_ynur; |
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| 279 | |
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| 280 | xdim = int(ceil((bbox->nur.x - bbox->fll.x)/resolution) + 3); |
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| 281 | ydim = int(ceil((bbox->nur.y - bbox->fll.y)/resolution) + 3); |
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| 282 | |
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| 283 | if (dm == NULL) { |
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| 284 | dm = new DepthMap(xdim, ydim, useNorms, DEPTH_TREE_GRANULARITY); |
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| 285 | theDepthMap = dm; |
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| 286 | } |
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| 287 | else { |
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| 288 | if (!dm->reuse(xdim, ydim)) { |
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| 289 | delete dm; |
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| 290 | dm = new DepthMap(xdim, ydim, useNorms, DEPTH_TREE_GRANULARITY); |
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| 291 | theDepthMap = dm; |
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| 292 | } |
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| 293 | } |
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| 294 | |
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| 295 | dm->origin[0] = (int(bbox->fll[0]/resolution)-1)*resolution; |
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| 296 | dm->origin[1] = (int(bbox->fll[1]/resolution)-1)*resolution; |
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| 297 | dm->resolution = resolution; |
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| 298 | dm->linePersp = 0; |
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| 299 | dm->perspective = 1; |
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| 300 | |
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| 301 | theZBuffer.width = xdim; |
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| 302 | theZBuffer.height = ydim; |
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| 303 | theZBuffer.sampleZI = (FB_SampleZI *)dm->elems; |
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| 304 | |
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| 305 | new_xnur = (xdim-1)*resolution + bbox->fll.x; |
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| 306 | new_ynur = (ydim-1)*resolution + bbox->fll.y; |
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| 307 | |
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| 308 | if (Verbose) |
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| 309 | printf("BBox: (%f, %f, %f) -> (%f, %f, %f)\n", |
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| 310 | bbox->fll.x, bbox->fll.y, bbox->fll.z, |
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| 311 | new_xnur, new_ynur, bbox->nur.z); |
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| 312 | |
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| 313 | Matrix4f mmodel, mvport, mscale, mpermute, mflipz; |
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| 314 | Vec3f trans; |
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| 315 | |
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| 316 | mpermute.makeIdentity(); |
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| 317 | if (shear->axis == X_AXIS) { |
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| 318 | mpermute.m[0][0] = 0; |
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| 319 | mpermute.m[0][2] = 1; |
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| 320 | mpermute.m[2][2] = 0; |
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| 321 | mpermute.m[2][0] = 1; |
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| 322 | } |
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| 323 | else if (shear->axis == Y_AXIS) { |
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| 324 | mpermute.m[1][1] = 0; |
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| 325 | mpermute.m[1][2] = 1; |
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| 326 | mpermute.m[2][2] = 0; |
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| 327 | mpermute.m[2][1] = 1; |
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| 328 | } |
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| 329 | |
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| 330 | // Set up flip matrix |
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| 331 | |
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| 332 | mflipz.makeIdentity(); |
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| 333 | if (shear->flip) |
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| 334 | mflipz.m[2][2] = -1; |
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| 335 | |
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| 336 | mesh->quat.toMatrix(mmodel); |
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| 337 | |
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| 338 | if (useNorms) |
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| 339 | transformNorms(mesh, &mmodel); |
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| 340 | |
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| 341 | mmodel.translate(mesh->trans); |
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| 342 | mmodel.multLeft(mpermute); |
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| 343 | mmodel.multLeft(mflipz); |
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| 344 | |
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| 345 | trans.setValue(-dm->origin[0], -dm->origin[1], 0); |
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| 346 | mvport.makeIdentity(); |
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| 347 | mvport.translate(trans); |
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| 348 | mscale.makeIdentity(); |
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| 349 | mscale.scale(1/resolution, 1/resolution, 1); |
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| 350 | mvport.multLeft(mscale); |
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| 351 | |
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| 352 | transformVertsPersp(mesh, mmodel, mvport); |
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| 353 | |
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| 354 | ClockWise = (shear->axis == Z_AXIS) ^ (shear->flip); |
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| 355 | } |
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| 356 | |
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| 357 | void |
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| 358 | softRenderConfidence(Mesh *mesh) |
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| 359 | { |
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| 360 | start_time(); |
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| 361 | |
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| 362 | Clear(&theZBuffer, -MAXFLOAT, 0.0f); |
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| 363 | drawMeshConfidence(mesh, &theZBuffer); |
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| 364 | |
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| 365 | end_time(); |
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| 366 | |
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| 367 | if (Verbose) |
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| 368 | printf("Time to render and read frame buffer = %f.\n", |
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| 369 | time_elapsed()); |
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| 370 | } |
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| 371 | |
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| 372 | void |
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| 373 | softRenderEdgeSteps(Mesh *mesh) |
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| 374 | { |
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| 375 | start_time(); |
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| 376 | |
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| 377 | Clear(&theZBuffer, -MAXFLOAT, 0.0f); |
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| 378 | drawMeshEdgeSteps(mesh, &theZBuffer); |
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| 379 | |
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| 380 | end_time(); |
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| 381 | |
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| 382 | if (Verbose) |
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| 383 | printf("Time to render and read frame buffer = %f.\n", |
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| 384 | time_elapsed()); |
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| 385 | } |
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| 386 | |
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| 387 | |
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| 388 | void |
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| 389 | softRenderNx(Mesh *mesh) |
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| 390 | { |
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| 391 | start_time(); |
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| 392 | |
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| 393 | Clear(&theZBuffer, -MAXFLOAT, 0.0f); |
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| 394 | drawMeshNx(mesh, &theZBuffer); |
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| 395 | |
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| 396 | end_time(); |
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| 397 | |
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| 398 | if (Verbose) |
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| 399 | printf("Time to render and read frame buffer = %f.\n", |
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| 400 | time_elapsed()); |
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| 401 | } |
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| 402 | |
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| 403 | |
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| 404 | void |
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| 405 | softRenderNy(Mesh *mesh) |
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| 406 | { |
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| 407 | start_time(); |
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| 408 | |
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| 409 | Clear(&theZBuffer, -MAXFLOAT, 0.0f); |
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| 410 | drawMeshNy(mesh, &theZBuffer); |
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| 411 | |
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| 412 | end_time(); |
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| 413 | |
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| 414 | if (Verbose) |
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| 415 | printf("Time to render and read frame buffer = %f.\n", |
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| 416 | time_elapsed()); |
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| 417 | } |
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| 418 | |
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| 419 | |
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| 420 | void |
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| 421 | softRenderNz(Mesh *mesh) |
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| 422 | { |
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| 423 | start_time(); |
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| 424 | |
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| 425 | Clear(&theZBuffer, -MAXFLOAT, 0.0f); |
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| 426 | drawMeshNz(mesh, &theZBuffer); |
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| 427 | |
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| 428 | end_time(); |
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| 429 | |
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| 430 | if (Verbose) |
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| 431 | printf("Time to render and read frame buffer = %f.\n", |
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| 432 | time_elapsed()); |
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| 433 | } |
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| 434 | |
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| 435 | |
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| 436 | void |
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| 437 | transformNorms(Mesh *mesh, Matrix4f *mrot) |
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| 438 | { |
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| 439 | Vertex *vert; |
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| 440 | vert = mesh->verts; |
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| 441 | for (int j = 0; j < mesh->numVerts; j++, vert++) { |
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| 442 | mrot->multVec(vert->norm, vert->norm); |
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| 443 | } |
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| 444 | } |
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| 445 | |
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| 446 | |
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| 447 | void |
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| 448 | transformVerts(Mesh *mesh, Matrix4f *mfinal) |
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| 449 | { |
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| 450 | Vertex *vert; |
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| 451 | float m00,m01,m02,m03; |
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| 452 | float m10,m11,m12,m13; |
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| 453 | float m20,m21,m22,m23; |
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| 454 | float m30,m31,m32,m33; |
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| 455 | float x,y,z,w,overw; |
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| 456 | |
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| 457 | m00 = mfinal->m[0][0]; m01 = mfinal->m[0][1]; |
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| 458 | m02 = mfinal->m[0][2]; m03 = mfinal->m[0][3]; |
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| 459 | |
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| 460 | m10 = mfinal->m[1][0]; m11 = mfinal->m[1][1]; |
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| 461 | m12 = mfinal->m[1][2]; m13 = mfinal->m[1][3]; |
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| 462 | |
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| 463 | m20 = mfinal->m[2][0]; m21 = mfinal->m[2][1]; |
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| 464 | m22 = mfinal->m[2][2]; m23 = mfinal->m[2][3]; |
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| 465 | |
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| 466 | m30 = mfinal->m[3][0]; m31 = mfinal->m[3][1]; |
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| 467 | m32 = mfinal->m[3][2]; m33 = mfinal->m[3][3]; |
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| 468 | |
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| 469 | vert = mesh->verts; |
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| 470 | for (int j = 0; j < mesh->numVerts; j++, vert++) { |
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| 471 | x = vert->coord.x; |
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| 472 | y = vert->coord.y; |
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| 473 | z = vert->coord.z; |
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| 474 | w = 1; |
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| 475 | |
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| 476 | overw = 1/(m30*x + m31*y + m32*z + m33*w); |
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| 477 | overw = 1; |
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| 478 | vert->coord.x = (m00*x + m01*y + m02*z + m03*w)*overw; |
---|
| 479 | vert->coord.y = (m10*x + m11*y + m12*z + m13*w)*overw; |
---|
| 480 | vert->coord.z = (m20*x + m21*y + m22*z + m23*w)*overw; |
---|
| 481 | } |
---|
| 482 | } |
---|
| 483 | |
---|
| 484 | |
---|
| 485 | void |
---|
| 486 | transformVertsLinePersp(Mesh *mesh, Matrix4f &mmodel, Matrix4f &mvport) |
---|
| 487 | { |
---|
| 488 | Vec3f v1, v2; |
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| 489 | Vertex *vert; |
---|
| 490 | |
---|
| 491 | vert = mesh->verts; |
---|
| 492 | for (int j = 0; j < mesh->numVerts; j++, vert++) { |
---|
| 493 | mmodel.multVec(vert->coord, v1); |
---|
| 494 | applyLinePersp(v1, v2); |
---|
| 495 | mvport.multVec(v2, vert->coord); |
---|
| 496 | } |
---|
| 497 | } |
---|
| 498 | |
---|
| 499 | |
---|
| 500 | void |
---|
| 501 | transformVertsPersp(Mesh *mesh, Matrix4f &mmodel, Matrix4f &mvport) |
---|
| 502 | { |
---|
| 503 | Vec3f v1, v2; |
---|
| 504 | Vertex *vert; |
---|
| 505 | |
---|
| 506 | float dist; |
---|
| 507 | |
---|
| 508 | vert = mesh->verts; |
---|
| 509 | for (int j = 0; j < mesh->numVerts; j++, vert++) { |
---|
| 510 | mmodel.multVec(vert->coord, v1); |
---|
| 511 | applyPersp(v1, v2); |
---|
| 512 | mvport.multVec(v2, vert->coord); |
---|
| 513 | } |
---|
| 514 | } |
---|
| 515 | |
---|
| 516 | |
---|
| 517 | void |
---|
| 518 | drawMeshConfidence(Mesh *mesh, FB_IntensityBuffer *zbuffer) |
---|
| 519 | { |
---|
| 520 | Vertex *v0, *v1, *v2; |
---|
| 521 | float x1, y1, x2, y2, crossz; |
---|
| 522 | IS_Vertex_ZI vzi0, vzi1, vzi2; |
---|
| 523 | Triangle *tri = mesh->tris; |
---|
| 524 | for (int j = 0; j < mesh->numTris; j++, tri++) { |
---|
| 525 | v0 = mesh->verts + tri->vindex1; |
---|
| 526 | v1 = mesh->verts + tri->vindex2; |
---|
| 527 | v2 = mesh->verts + tri->vindex3; |
---|
| 528 | if (v0->coord.x < -0.5 || v0->coord.x > zbuffer->width-0.5 || |
---|
| 529 | v0->coord.y < -0.5 || v0->coord.y > zbuffer->height-0.5 || |
---|
| 530 | v1->coord.x < -0.5 || v1->coord.x > zbuffer->width-0.5 || |
---|
| 531 | v1->coord.y < -0.5 || v1->coord.y > zbuffer->height-0.5 || |
---|
| 532 | v2->coord.x < -0.5 || v2->coord.x > zbuffer->width-0.5 || |
---|
| 533 | v2->coord.y < -0.5 || v2->coord.y > zbuffer->height-0.5) |
---|
| 534 | continue; |
---|
| 535 | |
---|
| 536 | x1 = v0->coord.x - v1->coord.x; |
---|
| 537 | y1 = v0->coord.y - v1->coord.y; |
---|
| 538 | |
---|
| 539 | x2 = v0->coord.x - v2->coord.x; |
---|
| 540 | y2 = v0->coord.y - v2->coord.y; |
---|
| 541 | |
---|
| 542 | crossz = x1*y2 - x2*y1; |
---|
| 543 | |
---|
| 544 | if (crossz < 0 && ClockWise) { |
---|
| 545 | vzi0.I = -1; |
---|
| 546 | vzi1.I = -1; |
---|
| 547 | vzi2.I = -1; |
---|
| 548 | } else { |
---|
| 549 | vzi0.I = v0->confidence; |
---|
| 550 | vzi1.I = v1->confidence; |
---|
| 551 | vzi2.I = v2->confidence; |
---|
| 552 | } |
---|
| 553 | |
---|
| 554 | vzi0.x = v0->coord.x; |
---|
| 555 | vzi0.y = v0->coord.y; |
---|
| 556 | vzi0.Z = v0->coord.z; |
---|
| 557 | |
---|
| 558 | vzi1.x = v1->coord.x; |
---|
| 559 | vzi1.y = v1->coord.y; |
---|
| 560 | vzi1.Z = v1->coord.z; |
---|
| 561 | |
---|
| 562 | vzi2.x = v2->coord.x; |
---|
| 563 | vzi2.y = v2->coord.y; |
---|
| 564 | vzi2.Z = v2->coord.z; |
---|
| 565 | |
---|
| 566 | SL_SCTriangle_DDA(&vzi0, &vzi1, &vzi2, |
---|
| 567 | (IS_CAttr_None *) NULL, zbuffer); |
---|
| 568 | } |
---|
| 569 | |
---|
| 570 | for (int i = 0; i < zbuffer->width * zbuffer->height; i++) { |
---|
| 571 | if (zbuffer->sampleZI[i].I < 0) { |
---|
| 572 | zbuffer->sampleZI[i].Z = -MAXFLOAT; |
---|
| 573 | zbuffer->sampleZI[i].I = 0; |
---|
| 574 | } |
---|
| 575 | } |
---|
| 576 | |
---|
| 577 | } |
---|
| 578 | |
---|
| 579 | |
---|
| 580 | void |
---|
| 581 | drawMeshEdgeSteps(Mesh *mesh, FB_IntensityBuffer *zbuffer) |
---|
| 582 | { |
---|
| 583 | Vertex *v0, *v1, *v2; |
---|
| 584 | float x1, y1, x2, y2, crossz; |
---|
| 585 | IS_Vertex_ZI vzi0, vzi1, vzi2; |
---|
| 586 | Triangle *tri = mesh->tris; |
---|
| 587 | for (int j = 0; j < mesh->numTris; j++, tri++) { |
---|
| 588 | v0 = mesh->verts + tri->vindex1; |
---|
| 589 | v1 = mesh->verts + tri->vindex2; |
---|
| 590 | v2 = mesh->verts + tri->vindex3; |
---|
| 591 | if (v0->coord.x < -0.5 || v0->coord.x > zbuffer->width-0.5 || |
---|
| 592 | v0->coord.y < -0.5 || v0->coord.y > zbuffer->height-0.5 || |
---|
| 593 | v1->coord.x < -0.5 || v1->coord.x > zbuffer->width-0.5 || |
---|
| 594 | v1->coord.y < -0.5 || v1->coord.y > zbuffer->height-0.5 || |
---|
| 595 | v2->coord.x < -0.5 || v2->coord.x > zbuffer->width-0.5 || |
---|
| 596 | v2->coord.y < -0.5 || v2->coord.y > zbuffer->height-0.5) |
---|
| 597 | continue; |
---|
| 598 | |
---|
| 599 | vzi0.x = v0->coord.x; |
---|
| 600 | vzi0.y = v0->coord.y; |
---|
| 601 | vzi0.Z = v0->coord.z; |
---|
| 602 | vzi0.I = float(v0->stepsToEdge)/MaxStepsToEdge; |
---|
| 603 | |
---|
| 604 | vzi1.x = v1->coord.x; |
---|
| 605 | vzi1.y = v1->coord.y; |
---|
| 606 | vzi1.Z = v1->coord.z; |
---|
| 607 | vzi1.I = float(v1->stepsToEdge)/MaxStepsToEdge; |
---|
| 608 | |
---|
| 609 | vzi2.x = v2->coord.x; |
---|
| 610 | vzi2.y = v2->coord.y; |
---|
| 611 | vzi2.Z = v2->coord.z; |
---|
| 612 | vzi2.I = float(v2->stepsToEdge)/MaxStepsToEdge; |
---|
| 613 | |
---|
| 614 | /* |
---|
| 615 | if (vzi0.I < 0) { |
---|
| 616 | vzi0.I = 1.0; |
---|
| 617 | } |
---|
| 618 | if (vzi1.I < 0) { |
---|
| 619 | vzi1.I = 1.0; |
---|
| 620 | } |
---|
| 621 | if (vzi2.I < 0) { |
---|
| 622 | vzi2.I = 1.0; |
---|
| 623 | } |
---|
| 624 | */ |
---|
| 625 | |
---|
| 626 | SL_SCTriangle_DDA(&vzi0, &vzi1, &vzi2, |
---|
| 627 | (IS_CAttr_None *) NULL, zbuffer); |
---|
| 628 | } |
---|
| 629 | |
---|
| 630 | /* |
---|
| 631 | for (int i = 0; i < zbuffer->width * zbuffer->height; i++) { |
---|
| 632 | if (zbuffer->sampleZI[i].I < 0) { |
---|
| 633 | zbuffer->sampleZI[i].Z = -MAXFLOAT; |
---|
| 634 | } |
---|
| 635 | } |
---|
| 636 | */ |
---|
| 637 | |
---|
| 638 | } |
---|
| 639 | |
---|
| 640 | |
---|
| 641 | void |
---|
| 642 | drawMeshNx(Mesh *mesh, FB_IntensityBuffer *zbuffer) |
---|
| 643 | { |
---|
| 644 | Vertex *v0, *v1, *v2; |
---|
| 645 | IS_Vertex_ZI vzi0, vzi1, vzi2; |
---|
| 646 | Triangle *tri = mesh->tris; |
---|
| 647 | for (int j = 0; j < mesh->numTris; j++, tri++) { |
---|
| 648 | v0 = mesh->verts + tri->vindex1; |
---|
| 649 | v1 = mesh->verts + tri->vindex2; |
---|
| 650 | v2 = mesh->verts + tri->vindex3; |
---|
| 651 | if (v0->coord.x < -0.5 || v0->coord.x > zbuffer->width-0.5 || |
---|
| 652 | v0->coord.y < -0.5 || v0->coord.y > zbuffer->height-0.5 || |
---|
| 653 | v1->coord.x < -0.5 || v1->coord.x > zbuffer->width-0.5 || |
---|
| 654 | v1->coord.y < -0.5 || v1->coord.y > zbuffer->height-0.5 || |
---|
| 655 | v2->coord.x < -0.5 || v2->coord.x > zbuffer->width-0.5 || |
---|
| 656 | v2->coord.y < -0.5 || v2->coord.y > zbuffer->height-0.5) |
---|
| 657 | continue; |
---|
| 658 | |
---|
| 659 | vzi0.x = v0->coord.x; |
---|
| 660 | vzi0.y = v0->coord.y; |
---|
| 661 | vzi0.Z = v0->coord.z; |
---|
| 662 | vzi0.I = v0->norm.x; |
---|
| 663 | |
---|
| 664 | vzi1.x = v1->coord.x; |
---|
| 665 | vzi1.y = v1->coord.y; |
---|
| 666 | vzi1.Z = v1->coord.z; |
---|
| 667 | vzi1.I = v1->norm.x; |
---|
| 668 | |
---|
| 669 | vzi2.x = v2->coord.x; |
---|
| 670 | vzi2.y = v2->coord.y; |
---|
| 671 | vzi2.Z = v2->coord.z; |
---|
| 672 | vzi2.I = v2->norm.x; |
---|
| 673 | |
---|
| 674 | SL_SCTriangle_DDA(&vzi0, &vzi1, &vzi2, |
---|
| 675 | (IS_CAttr_None *) NULL, zbuffer); |
---|
| 676 | } |
---|
| 677 | } |
---|
| 678 | |
---|
| 679 | void |
---|
| 680 | drawMeshNy(Mesh *mesh, FB_IntensityBuffer *zbuffer) |
---|
| 681 | { |
---|
| 682 | Vertex *v0, *v1, *v2; |
---|
| 683 | IS_Vertex_ZI vzi0, vzi1, vzi2; |
---|
| 684 | Triangle *tri = mesh->tris; |
---|
| 685 | for (int j = 0; j < mesh->numTris; j++, tri++) { |
---|
| 686 | v0 = mesh->verts + tri->vindex1; |
---|
| 687 | v1 = mesh->verts + tri->vindex2; |
---|
| 688 | v2 = mesh->verts + tri->vindex3; |
---|
| 689 | if (v0->coord.x < -0.5 || v0->coord.x > zbuffer->width-0.5 || |
---|
| 690 | v0->coord.y < -0.5 || v0->coord.y > zbuffer->height-0.5 || |
---|
| 691 | v1->coord.x < -0.5 || v1->coord.x > zbuffer->width-0.5 || |
---|
| 692 | v1->coord.y < -0.5 || v1->coord.y > zbuffer->height-0.5 || |
---|
| 693 | v2->coord.x < -0.5 || v2->coord.x > zbuffer->width-0.5 || |
---|
| 694 | v2->coord.y < -0.5 || v2->coord.y > zbuffer->height-0.5) |
---|
| 695 | continue; |
---|
| 696 | |
---|
| 697 | vzi0.x = v0->coord.x; |
---|
| 698 | vzi0.y = v0->coord.y; |
---|
| 699 | vzi0.Z = v0->coord.z; |
---|
| 700 | vzi0.I = v0->norm.y; |
---|
| 701 | |
---|
| 702 | vzi1.x = v1->coord.x; |
---|
| 703 | vzi1.y = v1->coord.y; |
---|
| 704 | vzi1.Z = v1->coord.z; |
---|
| 705 | vzi1.I = v1->norm.y; |
---|
| 706 | |
---|
| 707 | vzi2.x = v2->coord.x; |
---|
| 708 | vzi2.y = v2->coord.y; |
---|
| 709 | vzi2.Z = v2->coord.z; |
---|
| 710 | vzi2.I = v2->norm.y; |
---|
| 711 | |
---|
| 712 | SL_SCTriangle_DDA(&vzi0, &vzi1, &vzi2, |
---|
| 713 | (IS_CAttr_None *) NULL, zbuffer); |
---|
| 714 | } |
---|
| 715 | |
---|
| 716 | } |
---|
| 717 | |
---|
| 718 | void |
---|
| 719 | drawMeshNz(Mesh *mesh, FB_IntensityBuffer *zbuffer) |
---|
| 720 | { |
---|
| 721 | Vertex *v0, *v1, *v2; |
---|
| 722 | IS_Vertex_ZI vzi0, vzi1, vzi2; |
---|
| 723 | Triangle *tri = mesh->tris; |
---|
| 724 | for (int j = 0; j < mesh->numTris; j++, tri++) { |
---|
| 725 | v0 = mesh->verts + tri->vindex1; |
---|
| 726 | v1 = mesh->verts + tri->vindex2; |
---|
| 727 | v2 = mesh->verts + tri->vindex3; |
---|
| 728 | if (v0->coord.x < -0.5 || v0->coord.x > zbuffer->width-0.5 || |
---|
| 729 | v0->coord.y < -0.5 || v0->coord.y > zbuffer->height-0.5 || |
---|
| 730 | v1->coord.x < -0.5 || v1->coord.x > zbuffer->width-0.5 || |
---|
| 731 | v1->coord.y < -0.5 || v1->coord.y > zbuffer->height-0.5 || |
---|
| 732 | v2->coord.x < -0.5 || v2->coord.x > zbuffer->width-0.5 || |
---|
| 733 | v2->coord.y < -0.5 || v2->coord.y > zbuffer->height-0.5) |
---|
| 734 | continue; |
---|
| 735 | |
---|
| 736 | vzi0.x = v0->coord.x; |
---|
| 737 | vzi0.y = v0->coord.y; |
---|
| 738 | vzi0.Z = v0->coord.z; |
---|
| 739 | vzi0.I = v0->norm.z; |
---|
| 740 | |
---|
| 741 | vzi1.x = v1->coord.x; |
---|
| 742 | vzi1.y = v1->coord.y; |
---|
| 743 | vzi1.Z = v1->coord.z; |
---|
| 744 | vzi1.I = v1->norm.z; |
---|
| 745 | |
---|
| 746 | vzi2.x = v2->coord.x; |
---|
| 747 | vzi2.y = v2->coord.y; |
---|
| 748 | vzi2.Z = v2->coord.z; |
---|
| 749 | vzi2.I = v2->norm.z; |
---|
| 750 | |
---|
| 751 | SL_SCTriangle_DDA(&vzi0, &vzi1, &vzi2, |
---|
| 752 | (IS_CAttr_None *) NULL, zbuffer); |
---|
| 753 | } |
---|
| 754 | } |
---|
| 755 | |
---|
| 756 | void |
---|
| 757 | Clear(FB_IntensityBuffer *buffer, Real Z, Real I) |
---|
| 758 | { |
---|
| 759 | for (int i = 0; i < buffer->width * buffer->height; i++) { |
---|
| 760 | buffer->sampleZI[i].Z = Z; |
---|
| 761 | buffer->sampleZI[i].I = I; |
---|
| 762 | } |
---|
| 763 | } |
---|