mirror of
https://github.com/UberGames/rpgxEF.git
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1399 lines
31 KiB
C
1399 lines
31 KiB
C
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// Copyright (C) 1999-2000 Id Software, Inc.
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//
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// q_math.c -- stateless support routines that are included in each code module
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#include "q_shared.h"
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vec3_t vec3_origin = {0,0,0};
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vec3_t axisDefault[3] = { { 1, 0, 0 }, { 0, 1, 0 }, { 0, 0, 1 } };
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vec4_t colorTable[CT_MAX] =
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{
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{0, 0, 0, 0}, // CT_NONE
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{0, 0, 0, 1}, // CT_BLACK
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{1, 0, 0, 1}, // CT_RED
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{0, 1, 0, 1}, // CT_GREEN
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{0, 0, 1, 1}, // CT_BLUE
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{1, 1, 0, 1}, // CT_YELLOW
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{1, 0, 1, 1}, // CT_MAGENTA
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{0, 1, 1, 1}, // CT_CYAN
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{0.071, 0.271, 0.29, 1},// CT_TEAL
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{0.529, 0.373, 0.017, 1},//CT_GOLD
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{1, 1, 1, 1}, // CT_WHITE
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{0.75, 0.75, 0.75, 1}, // CT_LTGREY
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{0.50, 0.50, 0.50, 1}, // CT_MDGREY
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{0.25, 0.25, 0.25, 1}, // CT_DKGREY
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{0.15, 0.15, 0.15, 1}, // CT_DKGREY2
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{0.688, 0.797, 1, 1}, // CT_VLTORANGE -- needs values
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{0.688, 0.797, 1, 1}, // CT_LTORANGE
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{0.620, 0.710, 0.894, 1}, // CT_DKORANGE
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{0.463, 0.525, 0.671, 1}, // CT_VDKORANGE
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{0.616, 0.718, 0.898, 1}, // CT_VLTBLUE1
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{0.286, 0.506, 0.898, 1}, // CT_LTBLUE1
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{0.082, 0.388, 0.898, 1}, // CT_DKBLUE1
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{0.063, 0.278, 0.514, 1}, // CT_VDKBLUE1
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{0.302, 0.380, 0.612, 1}, // CT_VLTBLUE2 -- needs values
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{0.196, 0.314, 0.612, 1}, // CT_LTBLUE2
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{0.060, 0.227, 0.611, 1}, // CT_DKBLUE2
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{0.043, 0.161, 0.459, 1}, // CT_VDKBLUE2
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{0.082, 0.388, 0.898, 1}, // CT_VLTBROWN1 -- needs values
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{0.082, 0.388, 0.898, 1}, // CT_LTBROWN1
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{0.078, 0.320, 0.813, 1}, // CT_DKBROWN1
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{0.060, 0.227, 0.611, 1}, // CT_VDKBROWN1
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{1, 0.784, 0.365, 1}, // CT_VLTGOLD1 -- needs values
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{1, 0.706, 0.153, 1}, // CT_LTGOLD1
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{0.733, 0.514, 0.086, 1}, // CT_DKGOLD1
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{0.549, 0.384, 0.063, 1}, // CT_VDKGOLD1
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{0.688, 0.797, 1, 1}, // CT_VLTPURPLE1 -- needs values
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{0.688, 0.797, 1, 1}, // CT_LTPURPLE1
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{0.313, 0.578, 1, 1}, // CT_DKPURPLE1
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{0.031, 0.110, 0.341, 1}, // CT_VDKPURPLE1
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{0.688, 0.797, 1, 1}, // CT_VLTPURPLE2 -- needs values
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{0.688, 0.797, 1, 1}, // CT_LTPURPLE2
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{0.688, 0.797, 1, 1}, // CT_DKPURPLE2
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{0.031, 0.110, 0.341, 1}, // CT_VDKPURPLE2
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{0.686, 0.808, 0.1, 1}, // CT_VLTPURPLE3
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{0.188, 0.494, 1, 1}, // CT_LTPURPLE3
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{0.094, 0.471, 1, 1}, // CT_DKPURPLE3
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{0.067, 0.325, 0.749, 1}, // CT_VDKPURPLE3
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{1, 0.612, 0.325, 1}, // CT_VLTRED1
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{1, 0.478, 0.098, 1}, // CT_LTRED1
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{1, 0.438, 0, 1}, // CT_DKRED1
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{0.784, 0.329, 0, 1}, // CT_VDKRED1
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};
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vec4_t colorBlack = {0, 0, 0, 1};
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vec4_t colorRed = {1, 0, 0, 1};
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vec4_t colorGreen = {0, 1, 0, 1};
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vec4_t colorBlue = {0, 0, 1, 1};
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vec4_t colorYellow = {1, 1, 0, 1};
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vec4_t colorMagenta= {1, 0, 1, 1};
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vec4_t colorCyan = {0, 1, 1, 1};
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vec4_t colorWhite = {1, 1, 1, 1};
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vec4_t colorLtGrey = {0.75, 0.75, 0.75, 1};
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vec4_t colorMdGrey = {0.5, 0.5, 0.5, 1};
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vec4_t colorDkGrey = {0.25, 0.25, 0.25, 1};
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vec4_t g_color_table[8] =
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{
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{0.0, 0.0, 0.0, 1.0},
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{1.0, 0.0, 0.0, 1.0},
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{0.0, 1.0, 0.0, 1.0},
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{1.0, 1.0, 0.0, 1.0},
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{0.0, 0.0, 1.0, 1.0},
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{0.0, 1.0, 1.0, 1.0},
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{1.0, 0.0, 1.0, 1.0},
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{1.0, 1.0, 1.0, 1.0},
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};
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vec3_t bytedirs[NUMVERTEXNORMALS] =
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{
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{-0.525731, 0.000000, 0.850651}, {-0.442863, 0.238856, 0.864188},
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{-0.295242, 0.000000, 0.955423}, {-0.309017, 0.500000, 0.809017},
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{-0.162460, 0.262866, 0.951056}, {0.000000, 0.000000, 1.000000},
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{0.000000, 0.850651, 0.525731}, {-0.147621, 0.716567, 0.681718},
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{0.147621, 0.716567, 0.681718}, {0.000000, 0.525731, 0.850651},
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{0.309017, 0.500000, 0.809017}, {0.525731, 0.000000, 0.850651},
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{0.295242, 0.000000, 0.955423}, {0.442863, 0.238856, 0.864188},
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{0.162460, 0.262866, 0.951056}, {-0.681718, 0.147621, 0.716567},
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{-0.809017, 0.309017, 0.500000},{-0.587785, 0.425325, 0.688191},
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{-0.850651, 0.525731, 0.000000},{-0.864188, 0.442863, 0.238856},
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{-0.716567, 0.681718, 0.147621},{-0.688191, 0.587785, 0.425325},
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{-0.500000, 0.809017, 0.309017}, {-0.238856, 0.864188, 0.442863},
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{-0.425325, 0.688191, 0.587785}, {-0.716567, 0.681718, -0.147621},
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{-0.500000, 0.809017, -0.309017}, {-0.525731, 0.850651, 0.000000},
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{0.000000, 0.850651, -0.525731}, {-0.238856, 0.864188, -0.442863},
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{0.000000, 0.955423, -0.295242}, {-0.262866, 0.951056, -0.162460},
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{0.000000, 1.000000, 0.000000}, {0.000000, 0.955423, 0.295242},
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{-0.262866, 0.951056, 0.162460}, {0.238856, 0.864188, 0.442863},
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{0.262866, 0.951056, 0.162460}, {0.500000, 0.809017, 0.309017},
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{0.238856, 0.864188, -0.442863},{0.262866, 0.951056, -0.162460},
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{0.500000, 0.809017, -0.309017},{0.850651, 0.525731, 0.000000},
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{0.716567, 0.681718, 0.147621}, {0.716567, 0.681718, -0.147621},
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{0.525731, 0.850651, 0.000000}, {0.425325, 0.688191, 0.587785},
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{0.864188, 0.442863, 0.238856}, {0.688191, 0.587785, 0.425325},
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{0.809017, 0.309017, 0.500000}, {0.681718, 0.147621, 0.716567},
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{0.587785, 0.425325, 0.688191}, {0.955423, 0.295242, 0.000000},
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{1.000000, 0.000000, 0.000000}, {0.951056, 0.162460, 0.262866},
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{0.850651, -0.525731, 0.000000},{0.955423, -0.295242, 0.000000},
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{0.864188, -0.442863, 0.238856}, {0.951056, -0.162460, 0.262866},
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{0.809017, -0.309017, 0.500000}, {0.681718, -0.147621, 0.716567},
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{0.850651, 0.000000, 0.525731}, {0.864188, 0.442863, -0.238856},
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{0.809017, 0.309017, -0.500000}, {0.951056, 0.162460, -0.262866},
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{0.525731, 0.000000, -0.850651}, {0.681718, 0.147621, -0.716567},
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{0.681718, -0.147621, -0.716567},{0.850651, 0.000000, -0.525731},
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{0.809017, -0.309017, -0.500000}, {0.864188, -0.442863, -0.238856},
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{0.951056, -0.162460, -0.262866}, {0.147621, 0.716567, -0.681718},
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{0.309017, 0.500000, -0.809017}, {0.425325, 0.688191, -0.587785},
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{0.442863, 0.238856, -0.864188}, {0.587785, 0.425325, -0.688191},
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{0.688191, 0.587785, -0.425325}, {-0.147621, 0.716567, -0.681718},
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{-0.309017, 0.500000, -0.809017}, {0.000000, 0.525731, -0.850651},
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{-0.525731, 0.000000, -0.850651}, {-0.442863, 0.238856, -0.864188},
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{-0.295242, 0.000000, -0.955423}, {-0.162460, 0.262866, -0.951056},
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{0.000000, 0.000000, -1.000000}, {0.295242, 0.000000, -0.955423},
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{0.162460, 0.262866, -0.951056}, {-0.442863, -0.238856, -0.864188},
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{-0.309017, -0.500000, -0.809017}, {-0.162460, -0.262866, -0.951056},
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{0.000000, -0.850651, -0.525731}, {-0.147621, -0.716567, -0.681718},
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{0.147621, -0.716567, -0.681718}, {0.000000, -0.525731, -0.850651},
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{0.309017, -0.500000, -0.809017}, {0.442863, -0.238856, -0.864188},
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{0.162460, -0.262866, -0.951056}, {0.238856, -0.864188, -0.442863},
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{0.500000, -0.809017, -0.309017}, {0.425325, -0.688191, -0.587785},
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{0.716567, -0.681718, -0.147621}, {0.688191, -0.587785, -0.425325},
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{0.587785, -0.425325, -0.688191}, {0.000000, -0.955423, -0.295242},
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{0.000000, -1.000000, 0.000000}, {0.262866, -0.951056, -0.162460},
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{0.000000, -0.850651, 0.525731}, {0.000000, -0.955423, 0.295242},
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{0.238856, -0.864188, 0.442863}, {0.262866, -0.951056, 0.162460},
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{0.500000, -0.809017, 0.309017}, {0.716567, -0.681718, 0.147621},
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{0.525731, -0.850651, 0.000000}, {-0.238856, -0.864188, -0.442863},
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{-0.500000, -0.809017, -0.309017}, {-0.262866, -0.951056, -0.162460},
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{-0.850651, -0.525731, 0.000000}, {-0.716567, -0.681718, -0.147621},
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{-0.716567, -0.681718, 0.147621}, {-0.525731, -0.850651, 0.000000},
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{-0.500000, -0.809017, 0.309017}, {-0.238856, -0.864188, 0.442863},
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{-0.262866, -0.951056, 0.162460}, {-0.864188, -0.442863, 0.238856},
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{-0.809017, -0.309017, 0.500000}, {-0.688191, -0.587785, 0.425325},
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{-0.681718, -0.147621, 0.716567}, {-0.442863, -0.238856, 0.864188},
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{-0.587785, -0.425325, 0.688191}, {-0.309017, -0.500000, 0.809017},
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{-0.147621, -0.716567, 0.681718}, {-0.425325, -0.688191, 0.587785},
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{-0.162460, -0.262866, 0.951056}, {0.442863, -0.238856, 0.864188},
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{0.162460, -0.262866, 0.951056}, {0.309017, -0.500000, 0.809017},
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{0.147621, -0.716567, 0.681718}, {0.000000, -0.525731, 0.850651},
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{0.425325, -0.688191, 0.587785}, {0.587785, -0.425325, 0.688191},
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{0.688191, -0.587785, 0.425325}, {-0.955423, 0.295242, 0.000000},
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{-0.951056, 0.162460, 0.262866}, {-1.000000, 0.000000, 0.000000},
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{-0.850651, 0.000000, 0.525731}, {-0.955423, -0.295242, 0.000000},
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{-0.951056, -0.162460, 0.262866}, {-0.864188, 0.442863, -0.238856},
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{-0.951056, 0.162460, -0.262866}, {-0.809017, 0.309017, -0.500000},
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{-0.864188, -0.442863, -0.238856}, {-0.951056, -0.162460, -0.262866},
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{-0.809017, -0.309017, -0.500000}, {-0.681718, 0.147621, -0.716567},
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{-0.681718, -0.147621, -0.716567}, {-0.850651, 0.000000, -0.525731},
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{-0.688191, 0.587785, -0.425325}, {-0.587785, 0.425325, -0.688191},
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{-0.425325, 0.688191, -0.587785}, {-0.425325, -0.688191, -0.587785},
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{-0.587785, -0.425325, -0.688191}, {-0.688191, -0.587785, -0.425325}
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};
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//==============================================================
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int Q_rand( int *seed ) {
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*seed = (69069 * *seed + 1);
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return *seed;
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}
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float Q_random( int *seed ) {
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return ( Q_rand( seed ) & 0xffff ) / (float)0x10000;
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}
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float Q_crandom( int *seed ) {
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return 2.0 * ( Q_random( seed ) - 0.5 );
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}
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//=======================================================
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signed char ClampChar( int i ) {
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if ( i < -128 ) {
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return -128;
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}
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if ( i > 127 ) {
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return 127;
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}
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return i;
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}
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signed short ClampShort( int i ) {
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if ( i < (short)0x8000 ) {
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return (short)0x8000;
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}
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if ( i > 0x7fff ) {
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return 0x7fff;
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}
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return i;
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}
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// this isn't a real cheap function to call!
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int DirToByte( vec3_t dir ) {
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int i, best;
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float d, bestd;
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if ( !dir ) {
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return 0;
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}
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bestd = 0;
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best = 0;
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for (i=0 ; i<NUMVERTEXNORMALS ; i++)
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{
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d = DotProduct (dir, bytedirs[i]);
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if (d > bestd)
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{
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bestd = d;
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best = i;
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}
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}
|
||
|
|
|
||
|
|
return best;
|
||
|
|
}
|
||
|
|
|
||
|
|
void ByteToDir( int b, vec3_t dir ) {
|
||
|
|
if ( b < 0 || b >= NUMVERTEXNORMALS ) {
|
||
|
|
VectorCopy( vec3_origin, dir );
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
VectorCopy (bytedirs[b], dir);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
unsigned ColorBytes3 (float r, float g, float b) {
|
||
|
|
unsigned i;
|
||
|
|
|
||
|
|
( (byte *)&i )[0] = r * 255;
|
||
|
|
( (byte *)&i )[1] = g * 255;
|
||
|
|
( (byte *)&i )[2] = b * 255;
|
||
|
|
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned ColorBytes4 (float r, float g, float b, float a) {
|
||
|
|
unsigned i;
|
||
|
|
|
||
|
|
( (byte *)&i )[0] = r * 255;
|
||
|
|
( (byte *)&i )[1] = g * 255;
|
||
|
|
( (byte *)&i )[2] = b * 255;
|
||
|
|
( (byte *)&i )[3] = a * 255;
|
||
|
|
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
float NormalizeColor( const vec3_t in, vec3_t out ) {
|
||
|
|
float max;
|
||
|
|
|
||
|
|
max = in[0];
|
||
|
|
if ( in[1] > max ) {
|
||
|
|
max = in[1];
|
||
|
|
}
|
||
|
|
if ( in[2] > max ) {
|
||
|
|
max = in[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( !max ) {
|
||
|
|
VectorClear( out );
|
||
|
|
} else {
|
||
|
|
out[0] = in[0] / max;
|
||
|
|
out[1] = in[1] / max;
|
||
|
|
out[2] = in[2] / max;
|
||
|
|
}
|
||
|
|
return max;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//============================================================================
|
||
|
|
|
||
|
|
/*
|
||
|
|
=====================
|
||
|
|
PlaneFromPoints
|
||
|
|
|
||
|
|
Returns false if the triangle is degenrate.
|
||
|
|
The normal will point out of the clock for clockwise ordered points
|
||
|
|
=====================
|
||
|
|
*/
|
||
|
|
qboolean PlaneFromPoints( vec4_t plane, const vec3_t a, const vec3_t b, const vec3_t c ) {
|
||
|
|
vec3_t d1, d2;
|
||
|
|
|
||
|
|
VectorSubtract( b, a, d1 );
|
||
|
|
VectorSubtract( c, a, d2 );
|
||
|
|
CrossProduct( d2, d1, plane );
|
||
|
|
if ( VectorNormalize( plane ) == 0 ) {
|
||
|
|
return qfalse;
|
||
|
|
}
|
||
|
|
|
||
|
|
plane[3] = DotProduct( a, plane );
|
||
|
|
return qtrue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
===============
|
||
|
|
RotatePointAroundVector
|
||
|
|
|
||
|
|
This is not implemented very well...
|
||
|
|
===============
|
||
|
|
*/
|
||
|
|
void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point,
|
||
|
|
float degrees ) {
|
||
|
|
float m[3][3];
|
||
|
|
float im[3][3];
|
||
|
|
float zrot[3][3];
|
||
|
|
float tmpmat[3][3];
|
||
|
|
float rot[3][3];
|
||
|
|
int i;
|
||
|
|
vec3_t vr, vup, vf;
|
||
|
|
float rad;
|
||
|
|
|
||
|
|
vf[0] = dir[0];
|
||
|
|
vf[1] = dir[1];
|
||
|
|
vf[2] = dir[2];
|
||
|
|
|
||
|
|
PerpendicularVector( vr, dir );
|
||
|
|
CrossProduct( vr, vf, vup );
|
||
|
|
|
||
|
|
m[0][0] = vr[0];
|
||
|
|
m[1][0] = vr[1];
|
||
|
|
m[2][0] = vr[2];
|
||
|
|
|
||
|
|
m[0][1] = vup[0];
|
||
|
|
m[1][1] = vup[1];
|
||
|
|
m[2][1] = vup[2];
|
||
|
|
|
||
|
|
m[0][2] = vf[0];
|
||
|
|
m[1][2] = vf[1];
|
||
|
|
m[2][2] = vf[2];
|
||
|
|
|
||
|
|
memcpy( im, m, sizeof( im ) );
|
||
|
|
|
||
|
|
im[0][1] = m[1][0];
|
||
|
|
im[0][2] = m[2][0];
|
||
|
|
im[1][0] = m[0][1];
|
||
|
|
im[1][2] = m[2][1];
|
||
|
|
im[2][0] = m[0][2];
|
||
|
|
im[2][1] = m[1][2];
|
||
|
|
|
||
|
|
memset( zrot, 0, sizeof( zrot ) );
|
||
|
|
zrot[0][0] = zrot[1][1] = zrot[2][2] = 1.0F;
|
||
|
|
|
||
|
|
rad = DEG2RAD( degrees );
|
||
|
|
zrot[0][0] = cos( rad );
|
||
|
|
zrot[0][1] = sin( rad );
|
||
|
|
zrot[1][0] = -sin( rad );
|
||
|
|
zrot[1][1] = cos( rad );
|
||
|
|
|
||
|
|
MatrixMultiply( m, zrot, tmpmat );
|
||
|
|
MatrixMultiply( tmpmat, im, rot );
|
||
|
|
|
||
|
|
for ( i = 0; i < 3; i++ ) {
|
||
|
|
dst[i] = rot[i][0] * point[0] + rot[i][1] * point[1] + rot[i][2] * point[2];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
===============
|
||
|
|
RotateAroundDirection
|
||
|
|
===============
|
||
|
|
*/
|
||
|
|
void RotateAroundDirection( vec3_t axis[3], float yaw ) {
|
||
|
|
|
||
|
|
// create an arbitrary axis[1]
|
||
|
|
PerpendicularVector( axis[1], axis[0] );
|
||
|
|
|
||
|
|
// rotate it around axis[0] by yaw
|
||
|
|
if ( yaw ) {
|
||
|
|
vec3_t temp;
|
||
|
|
|
||
|
|
VectorCopy( axis[1], temp );
|
||
|
|
RotatePointAroundVector( axis[1], axis[0], temp, yaw );
|
||
|
|
}
|
||
|
|
|
||
|
|
// cross to get axis[2]
|
||
|
|
CrossProduct( axis[0], axis[1], axis[2] );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
void vectoangles( const vec3_t value1, vec3_t angles ) {
|
||
|
|
float forward;
|
||
|
|
float yaw, pitch;
|
||
|
|
|
||
|
|
if ( value1[1] == 0 && value1[0] == 0 ) {
|
||
|
|
yaw = 0;
|
||
|
|
if ( value1[2] > 0 ) {
|
||
|
|
pitch = 90;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
pitch = 270;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
if ( value1[0] ) {
|
||
|
|
yaw = ( atan2 ( value1[1], value1[0] ) * 180 / M_PI );
|
||
|
|
}
|
||
|
|
else if ( value1[1] > 0 ) {
|
||
|
|
yaw = 90;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
yaw = 270;
|
||
|
|
}
|
||
|
|
if ( yaw < 0 ) {
|
||
|
|
yaw += 360;
|
||
|
|
}
|
||
|
|
|
||
|
|
forward = sqrt ( value1[0]*value1[0] + value1[1]*value1[1] );
|
||
|
|
pitch = ( atan2(value1[2], forward) * 180 / M_PI );
|
||
|
|
if ( pitch < 0 ) {
|
||
|
|
pitch += 360;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
angles[PITCH] = -pitch;
|
||
|
|
angles[YAW] = yaw;
|
||
|
|
angles[ROLL] = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
=================
|
||
|
|
AnglesToAxis
|
||
|
|
=================
|
||
|
|
*/
|
||
|
|
void AnglesToAxis( const vec3_t angles, vec3_t axis[3] ) {
|
||
|
|
vec3_t right;
|
||
|
|
|
||
|
|
// angle vectors returns "right" instead of "y axis"
|
||
|
|
AngleVectors( angles, axis[0], right, axis[2] );
|
||
|
|
VectorSubtract( vec3_origin, right, axis[1] );
|
||
|
|
}
|
||
|
|
|
||
|
|
void AxisClear( vec3_t axis[3] ) {
|
||
|
|
axis[0][0] = 1;
|
||
|
|
axis[0][1] = 0;
|
||
|
|
axis[0][2] = 0;
|
||
|
|
axis[1][0] = 0;
|
||
|
|
axis[1][1] = 1;
|
||
|
|
axis[1][2] = 0;
|
||
|
|
axis[2][0] = 0;
|
||
|
|
axis[2][1] = 0;
|
||
|
|
axis[2][2] = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
void AxisCopy( vec3_t in[3], vec3_t out[3] ) {
|
||
|
|
VectorCopy( in[0], out[0] );
|
||
|
|
VectorCopy( in[1], out[1] );
|
||
|
|
VectorCopy( in[2], out[2] );
|
||
|
|
}
|
||
|
|
|
||
|
|
void ProjectPointOnPlane( vec3_t dst, const vec3_t p, const vec3_t normal )
|
||
|
|
{
|
||
|
|
float d;
|
||
|
|
vec3_t n;
|
||
|
|
float inv_denom;
|
||
|
|
|
||
|
|
inv_denom = 1.0F / DotProduct( normal, normal );
|
||
|
|
|
||
|
|
d = DotProduct( normal, p ) * inv_denom;
|
||
|
|
|
||
|
|
n[0] = normal[0] * inv_denom;
|
||
|
|
n[1] = normal[1] * inv_denom;
|
||
|
|
n[2] = normal[2] * inv_denom;
|
||
|
|
|
||
|
|
dst[0] = p[0] - d * n[0];
|
||
|
|
dst[1] = p[1] - d * n[1];
|
||
|
|
dst[2] = p[2] - d * n[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
================
|
||
|
|
MakeNormalVectors
|
||
|
|
|
||
|
|
Given a normalized forward vector, create two
|
||
|
|
other perpendicular vectors
|
||
|
|
================
|
||
|
|
*/
|
||
|
|
void MakeNormalVectors( const vec3_t forward, vec3_t right, vec3_t up) {
|
||
|
|
float d;
|
||
|
|
|
||
|
|
// this rotate and negate guarantees a vector
|
||
|
|
// not colinear with the original
|
||
|
|
right[1] = -forward[0];
|
||
|
|
right[2] = forward[1];
|
||
|
|
right[0] = forward[2];
|
||
|
|
|
||
|
|
d = DotProduct (right, forward);
|
||
|
|
VectorMA (right, -d, forward, right);
|
||
|
|
VectorNormalize (right);
|
||
|
|
CrossProduct (right, forward, up);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void VectorRotate( vec3_t in, vec3_t matrix[3], vec3_t out )
|
||
|
|
{
|
||
|
|
out[0] = DotProduct( in, matrix[0] );
|
||
|
|
out[1] = DotProduct( in, matrix[1] );
|
||
|
|
out[2] = DotProduct( in, matrix[2] );
|
||
|
|
}
|
||
|
|
|
||
|
|
//============================================================================
|
||
|
|
|
||
|
|
/*
|
||
|
|
** float q_rsqrt( float number )
|
||
|
|
*/
|
||
|
|
float Q_rsqrt( float number )
|
||
|
|
{
|
||
|
|
long i;
|
||
|
|
float x2, y;
|
||
|
|
const float threehalfs = 1.5F;
|
||
|
|
|
||
|
|
x2 = number * 0.5F;
|
||
|
|
y = number;
|
||
|
|
i = * ( long * ) &y; // evil floating point bit level hacking
|
||
|
|
i = 0x5f3759df - ( i >> 1 ); // what the fuck?
|
||
|
|
y = * ( float * ) &i;
|
||
|
|
y = y * ( threehalfs - ( x2 * y * y ) ); // 1st iteration
|
||
|
|
// y = y * ( threehalfs - ( x2 * y * y ) ); // 2nd iteration, this can be removed
|
||
|
|
|
||
|
|
return y;
|
||
|
|
}
|
||
|
|
|
||
|
|
float Q_fabs( float f ) {
|
||
|
|
int tmp = * ( int * ) &f;
|
||
|
|
tmp &= 0x7FFFFFFF;
|
||
|
|
return * ( float * ) &tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
//============================================================
|
||
|
|
|
||
|
|
/*
|
||
|
|
===============
|
||
|
|
LerpAngle
|
||
|
|
|
||
|
|
===============
|
||
|
|
*/
|
||
|
|
float LerpAngle (float from, float to, float frac) {
|
||
|
|
float a;
|
||
|
|
|
||
|
|
if ( to - from > 180 ) {
|
||
|
|
to -= 360;
|
||
|
|
}
|
||
|
|
if ( to - from < -180 ) {
|
||
|
|
to += 360;
|
||
|
|
}
|
||
|
|
a = from + frac * (to - from);
|
||
|
|
|
||
|
|
return a;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
=================
|
||
|
|
AngleSubtract
|
||
|
|
|
||
|
|
Always returns a value from -180 to 180
|
||
|
|
=================
|
||
|
|
*/
|
||
|
|
float AngleSubtract( float a1, float a2 ) {
|
||
|
|
float a;
|
||
|
|
|
||
|
|
a = a1 - a2;
|
||
|
|
while ( a > 180 ) {
|
||
|
|
a -= 360;
|
||
|
|
}
|
||
|
|
while ( a < -180 ) {
|
||
|
|
a += 360;
|
||
|
|
}
|
||
|
|
return a;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void AnglesSubtract( vec3_t v1, vec3_t v2, vec3_t v3 ) {
|
||
|
|
v3[0] = AngleSubtract( v1[0], v2[0] );
|
||
|
|
v3[1] = AngleSubtract( v1[1], v2[1] );
|
||
|
|
v3[2] = AngleSubtract( v1[2], v2[2] );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
float AngleMod(float a) {
|
||
|
|
a = (360.0/65536) * ((int)(a*(65536/360.0)) & 65535);
|
||
|
|
return a;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
=================
|
||
|
|
AngleNormalize360
|
||
|
|
|
||
|
|
returns angle normalized to the range [0 <= angle < 360]
|
||
|
|
=================
|
||
|
|
*/
|
||
|
|
float AngleNormalize360 ( float angle ) {
|
||
|
|
return (360.0 / 65536) * ((int)(angle * (65536 / 360.0)) & 65535);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
=================
|
||
|
|
AngleNormalize180
|
||
|
|
|
||
|
|
returns angle normalized to the range [-180 < angle <= 180]
|
||
|
|
=================
|
||
|
|
*/
|
||
|
|
float AngleNormalize180 ( float angle ) {
|
||
|
|
angle = AngleNormalize360( angle );
|
||
|
|
if ( angle > 180.0 ) {
|
||
|
|
angle -= 360.0;
|
||
|
|
}
|
||
|
|
return angle;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
=================
|
||
|
|
AngleDelta
|
||
|
|
|
||
|
|
returns the normalized delta from angle1 to angle2
|
||
|
|
=================
|
||
|
|
*/
|
||
|
|
float AngleDelta ( float angle1, float angle2 ) {
|
||
|
|
return AngleNormalize180( angle1 - angle2 );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//============================================================
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
=================
|
||
|
|
SetPlaneSignbits
|
||
|
|
=================
|
||
|
|
*/
|
||
|
|
void SetPlaneSignbits (cplane_t *out) {
|
||
|
|
int bits, j;
|
||
|
|
|
||
|
|
// for fast box on planeside test
|
||
|
|
bits = 0;
|
||
|
|
for (j=0 ; j<3 ; j++) {
|
||
|
|
if (out->normal[j] < 0) {
|
||
|
|
bits |= 1<<j;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
out->signbits = bits;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
==================
|
||
|
|
BoxOnPlaneSide
|
||
|
|
|
||
|
|
Returns 1, 2, or 1 + 2
|
||
|
|
|
||
|
|
// this is the slow, general version
|
||
|
|
int BoxOnPlaneSide2 (vec3_t emins, vec3_t emaxs, struct cplane_s *p)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
float dist1, dist2;
|
||
|
|
int sides;
|
||
|
|
vec3_t corners[2];
|
||
|
|
|
||
|
|
for (i=0 ; i<3 ; i++)
|
||
|
|
{
|
||
|
|
if (p->normal[i] < 0)
|
||
|
|
{
|
||
|
|
corners[0][i] = emins[i];
|
||
|
|
corners[1][i] = emaxs[i];
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
corners[1][i] = emins[i];
|
||
|
|
corners[0][i] = emaxs[i];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
dist1 = DotProduct (p->normal, corners[0]) - p->dist;
|
||
|
|
dist2 = DotProduct (p->normal, corners[1]) - p->dist;
|
||
|
|
sides = 0;
|
||
|
|
if (dist1 >= 0)
|
||
|
|
sides = 1;
|
||
|
|
if (dist2 < 0)
|
||
|
|
sides |= 2;
|
||
|
|
|
||
|
|
return sides;
|
||
|
|
}
|
||
|
|
|
||
|
|
==================
|
||
|
|
*/
|
||
|
|
#if !(defined __linux__ && defined __i386__ && !defined C_ONLY)
|
||
|
|
#if defined __LCC__ || defined C_ONLY || !id386
|
||
|
|
|
||
|
|
int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct cplane_s *p)
|
||
|
|
{
|
||
|
|
float dist1, dist2;
|
||
|
|
int sides;
|
||
|
|
|
||
|
|
// fast axial cases
|
||
|
|
if (p->type < 3)
|
||
|
|
{
|
||
|
|
if (p->dist <= emins[p->type])
|
||
|
|
return 1;
|
||
|
|
if (p->dist >= emaxs[p->type])
|
||
|
|
return 2;
|
||
|
|
return 3;
|
||
|
|
}
|
||
|
|
|
||
|
|
// general case
|
||
|
|
switch (p->signbits)
|
||
|
|
{
|
||
|
|
case 0:
|
||
|
|
dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
|
||
|
|
dist2 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
|
||
|
|
break;
|
||
|
|
case 1:
|
||
|
|
dist1 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
|
||
|
|
dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
|
||
|
|
dist2 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
|
||
|
|
break;
|
||
|
|
case 3:
|
||
|
|
dist1 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
|
||
|
|
dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
|
||
|
|
break;
|
||
|
|
case 4:
|
||
|
|
dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
|
||
|
|
dist2 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
|
||
|
|
break;
|
||
|
|
case 5:
|
||
|
|
dist1 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
|
||
|
|
dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
|
||
|
|
break;
|
||
|
|
case 6:
|
||
|
|
dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
|
||
|
|
dist2 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
|
||
|
|
break;
|
||
|
|
case 7:
|
||
|
|
dist1 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
|
||
|
|
dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
dist1 = dist2 = 0; // shut up compiler
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
sides = 0;
|
||
|
|
if (dist1 >= p->dist)
|
||
|
|
sides = 1;
|
||
|
|
if (dist2 < p->dist)
|
||
|
|
sides |= 2;
|
||
|
|
|
||
|
|
return sides;
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
#pragma warning( disable: 4035 )
|
||
|
|
|
||
|
|
__declspec( naked ) int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct cplane_s *p)
|
||
|
|
{
|
||
|
|
static int bops_initialized;
|
||
|
|
static int Ljmptab[8];
|
||
|
|
|
||
|
|
__asm {
|
||
|
|
|
||
|
|
push ebx
|
||
|
|
|
||
|
|
cmp bops_initialized, 1
|
||
|
|
je initialized
|
||
|
|
mov bops_initialized, 1
|
||
|
|
|
||
|
|
mov Ljmptab[0*4], offset Lcase0
|
||
|
|
mov Ljmptab[1*4], offset Lcase1
|
||
|
|
mov Ljmptab[2*4], offset Lcase2
|
||
|
|
mov Ljmptab[3*4], offset Lcase3
|
||
|
|
mov Ljmptab[4*4], offset Lcase4
|
||
|
|
mov Ljmptab[5*4], offset Lcase5
|
||
|
|
mov Ljmptab[6*4], offset Lcase6
|
||
|
|
mov Ljmptab[7*4], offset Lcase7
|
||
|
|
|
||
|
|
initialized:
|
||
|
|
|
||
|
|
mov edx,dword ptr[4+12+esp]
|
||
|
|
mov ecx,dword ptr[4+4+esp]
|
||
|
|
xor eax,eax
|
||
|
|
mov ebx,dword ptr[4+8+esp]
|
||
|
|
mov al,byte ptr[17+edx]
|
||
|
|
cmp al,8
|
||
|
|
jge Lerror
|
||
|
|
fld dword ptr[0+edx]
|
||
|
|
fld st(0)
|
||
|
|
jmp dword ptr[Ljmptab+eax*4]
|
||
|
|
Lcase0:
|
||
|
|
fmul dword ptr[ebx]
|
||
|
|
fld dword ptr[0+4+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[ecx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[4+ebx]
|
||
|
|
fld dword ptr[0+8+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[4+ecx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[8+ebx]
|
||
|
|
fxch st(5)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fmul dword ptr[8+ecx]
|
||
|
|
fxch st(1)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fxch st(3)
|
||
|
|
faddp st(2),st(0)
|
||
|
|
jmp LSetSides
|
||
|
|
Lcase1:
|
||
|
|
fmul dword ptr[ecx]
|
||
|
|
fld dword ptr[0+4+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[ebx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[4+ebx]
|
||
|
|
fld dword ptr[0+8+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[4+ecx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[8+ebx]
|
||
|
|
fxch st(5)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fmul dword ptr[8+ecx]
|
||
|
|
fxch st(1)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fxch st(3)
|
||
|
|
faddp st(2),st(0)
|
||
|
|
jmp LSetSides
|
||
|
|
Lcase2:
|
||
|
|
fmul dword ptr[ebx]
|
||
|
|
fld dword ptr[0+4+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[ecx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[4+ecx]
|
||
|
|
fld dword ptr[0+8+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[4+ebx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[8+ebx]
|
||
|
|
fxch st(5)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fmul dword ptr[8+ecx]
|
||
|
|
fxch st(1)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fxch st(3)
|
||
|
|
faddp st(2),st(0)
|
||
|
|
jmp LSetSides
|
||
|
|
Lcase3:
|
||
|
|
fmul dword ptr[ecx]
|
||
|
|
fld dword ptr[0+4+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[ebx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[4+ecx]
|
||
|
|
fld dword ptr[0+8+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[4+ebx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[8+ebx]
|
||
|
|
fxch st(5)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fmul dword ptr[8+ecx]
|
||
|
|
fxch st(1)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fxch st(3)
|
||
|
|
faddp st(2),st(0)
|
||
|
|
jmp LSetSides
|
||
|
|
Lcase4:
|
||
|
|
fmul dword ptr[ebx]
|
||
|
|
fld dword ptr[0+4+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[ecx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[4+ebx]
|
||
|
|
fld dword ptr[0+8+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[4+ecx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[8+ecx]
|
||
|
|
fxch st(5)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fmul dword ptr[8+ebx]
|
||
|
|
fxch st(1)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fxch st(3)
|
||
|
|
faddp st(2),st(0)
|
||
|
|
jmp LSetSides
|
||
|
|
Lcase5:
|
||
|
|
fmul dword ptr[ecx]
|
||
|
|
fld dword ptr[0+4+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[ebx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[4+ebx]
|
||
|
|
fld dword ptr[0+8+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[4+ecx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[8+ecx]
|
||
|
|
fxch st(5)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fmul dword ptr[8+ebx]
|
||
|
|
fxch st(1)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fxch st(3)
|
||
|
|
faddp st(2),st(0)
|
||
|
|
jmp LSetSides
|
||
|
|
Lcase6:
|
||
|
|
fmul dword ptr[ebx]
|
||
|
|
fld dword ptr[0+4+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[ecx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[4+ecx]
|
||
|
|
fld dword ptr[0+8+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[4+ebx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[8+ecx]
|
||
|
|
fxch st(5)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fmul dword ptr[8+ebx]
|
||
|
|
fxch st(1)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fxch st(3)
|
||
|
|
faddp st(2),st(0)
|
||
|
|
jmp LSetSides
|
||
|
|
Lcase7:
|
||
|
|
fmul dword ptr[ecx]
|
||
|
|
fld dword ptr[0+4+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[ebx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[4+ecx]
|
||
|
|
fld dword ptr[0+8+edx]
|
||
|
|
fxch st(2)
|
||
|
|
fmul dword ptr[4+ebx]
|
||
|
|
fxch st(2)
|
||
|
|
fld st(0)
|
||
|
|
fmul dword ptr[8+ecx]
|
||
|
|
fxch st(5)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fmul dword ptr[8+ebx]
|
||
|
|
fxch st(1)
|
||
|
|
faddp st(3),st(0)
|
||
|
|
fxch st(3)
|
||
|
|
faddp st(2),st(0)
|
||
|
|
LSetSides:
|
||
|
|
faddp st(2),st(0)
|
||
|
|
fcomp dword ptr[12+edx]
|
||
|
|
xor ecx,ecx
|
||
|
|
fnstsw ax
|
||
|
|
fcomp dword ptr[12+edx]
|
||
|
|
and ah,1
|
||
|
|
xor ah,1
|
||
|
|
add cl,ah
|
||
|
|
fnstsw ax
|
||
|
|
and ah,1
|
||
|
|
add ah,ah
|
||
|
|
add cl,ah
|
||
|
|
pop ebx
|
||
|
|
mov eax,ecx
|
||
|
|
ret
|
||
|
|
Lerror:
|
||
|
|
int 3
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#pragma warning( default: 4035 )
|
||
|
|
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
=================
|
||
|
|
RadiusFromBounds
|
||
|
|
=================
|
||
|
|
*/
|
||
|
|
float RadiusFromBounds( const vec3_t mins, const vec3_t maxs ) {
|
||
|
|
int i;
|
||
|
|
vec3_t corner;
|
||
|
|
float a, b;
|
||
|
|
|
||
|
|
for (i=0 ; i<3 ; i++) {
|
||
|
|
a = fabs( mins[i] );
|
||
|
|
b = fabs( maxs[i] );
|
||
|
|
corner[i] = a > b ? a : b;
|
||
|
|
}
|
||
|
|
|
||
|
|
return VectorLength (corner);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void ClearBounds( vec3_t mins, vec3_t maxs ) {
|
||
|
|
mins[0] = mins[1] = mins[2] = 99999;
|
||
|
|
maxs[0] = maxs[1] = maxs[2] = -99999;
|
||
|
|
}
|
||
|
|
|
||
|
|
void AddPointToBounds( const vec3_t v, vec3_t mins, vec3_t maxs ) {
|
||
|
|
if ( v[0] < mins[0] ) {
|
||
|
|
mins[0] = v[0];
|
||
|
|
}
|
||
|
|
if ( v[0] > maxs[0]) {
|
||
|
|
maxs[0] = v[0];
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( v[1] < mins[1] ) {
|
||
|
|
mins[1] = v[1];
|
||
|
|
}
|
||
|
|
if ( v[1] > maxs[1]) {
|
||
|
|
maxs[1] = v[1];
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( v[2] < mins[2] ) {
|
||
|
|
mins[2] = v[2];
|
||
|
|
}
|
||
|
|
if ( v[2] > maxs[2]) {
|
||
|
|
maxs[2] = v[2];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int VectorCompare( const vec3_t v1, const vec3_t v2 ) {
|
||
|
|
if (v1[0] != v2[0] || v1[1] != v2[1] || v1[2] != v2[2]) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
vec_t VectorNormalize( vec3_t v ) {
|
||
|
|
float length, ilength;
|
||
|
|
|
||
|
|
length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
|
||
|
|
length = sqrt (length);
|
||
|
|
|
||
|
|
if ( length ) {
|
||
|
|
ilength = 1/length;
|
||
|
|
v[0] *= ilength;
|
||
|
|
v[1] *= ilength;
|
||
|
|
v[2] *= ilength;
|
||
|
|
}
|
||
|
|
|
||
|
|
return length;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// fast vector normalize routine that does not check to make sure
|
||
|
|
// that length != 0, nor does it return length
|
||
|
|
//
|
||
|
|
void VectorNormalizeFast( vec3_t v )
|
||
|
|
{
|
||
|
|
float ilength;
|
||
|
|
|
||
|
|
ilength = Q_rsqrt( DotProduct( v, v ) );
|
||
|
|
|
||
|
|
v[0] *= ilength;
|
||
|
|
v[1] *= ilength;
|
||
|
|
v[2] *= ilength;
|
||
|
|
}
|
||
|
|
|
||
|
|
vec_t VectorNormalize2( const vec3_t v, vec3_t out) {
|
||
|
|
float length, ilength;
|
||
|
|
|
||
|
|
length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
|
||
|
|
length = sqrt (length);
|
||
|
|
|
||
|
|
if (length)
|
||
|
|
{
|
||
|
|
ilength = 1/length;
|
||
|
|
out[0] = v[0]*ilength;
|
||
|
|
out[1] = v[1]*ilength;
|
||
|
|
out[2] = v[2]*ilength;
|
||
|
|
} else {
|
||
|
|
VectorClear( out );
|
||
|
|
}
|
||
|
|
|
||
|
|
return length;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void _VectorMA( const vec3_t veca, float scale, const vec3_t vecb, vec3_t vecc) {
|
||
|
|
vecc[0] = veca[0] + scale*vecb[0];
|
||
|
|
vecc[1] = veca[1] + scale*vecb[1];
|
||
|
|
vecc[2] = veca[2] + scale*vecb[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
vec_t _DotProduct( const vec3_t v1, const vec3_t v2 ) {
|
||
|
|
return v1[0]*v2[0] + v1[1]*v2[1] + v1[2]*v2[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
void _VectorSubtract( const vec3_t veca, const vec3_t vecb, vec3_t out ) {
|
||
|
|
out[0] = veca[0]-vecb[0];
|
||
|
|
out[1] = veca[1]-vecb[1];
|
||
|
|
out[2] = veca[2]-vecb[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
void _VectorAdd( const vec3_t veca, const vec3_t vecb, vec3_t out ) {
|
||
|
|
out[0] = veca[0]+vecb[0];
|
||
|
|
out[1] = veca[1]+vecb[1];
|
||
|
|
out[2] = veca[2]+vecb[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
void _VectorCopy( const vec3_t in, vec3_t out ) {
|
||
|
|
out[0] = in[0];
|
||
|
|
out[1] = in[1];
|
||
|
|
out[2] = in[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
void _VectorScale( const vec3_t in, vec_t scale, vec3_t out ) {
|
||
|
|
out[0] = in[0]*scale;
|
||
|
|
out[1] = in[1]*scale;
|
||
|
|
out[2] = in[2]*scale;
|
||
|
|
}
|
||
|
|
|
||
|
|
void CrossProduct( const vec3_t v1, const vec3_t v2, vec3_t cross ) {
|
||
|
|
cross[0] = v1[1]*v2[2] - v1[2]*v2[1];
|
||
|
|
cross[1] = v1[2]*v2[0] - v1[0]*v2[2];
|
||
|
|
cross[2] = v1[0]*v2[1] - v1[1]*v2[0];
|
||
|
|
}
|
||
|
|
|
||
|
|
vec_t VectorLength( const vec3_t v ) {
|
||
|
|
return sqrt (v[0]*v[0] + v[1]*v[1] + v[2]*v[2]);
|
||
|
|
}
|
||
|
|
|
||
|
|
vec_t VectorLengthSquared( const vec3_t v ) {
|
||
|
|
return (v[0]*v[0] + v[1]*v[1] + v[2]*v[2]);
|
||
|
|
}
|
||
|
|
|
||
|
|
vec_t Distance( const vec3_t p1, const vec3_t p2 ) {
|
||
|
|
vec3_t v;
|
||
|
|
|
||
|
|
VectorSubtract (p2, p1, v);
|
||
|
|
return VectorLength( v );
|
||
|
|
}
|
||
|
|
|
||
|
|
vec_t DistanceSquared( const vec3_t p1, const vec3_t p2 ) {
|
||
|
|
vec3_t v;
|
||
|
|
|
||
|
|
VectorSubtract (p2, p1, v);
|
||
|
|
return v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void VectorInverse( vec3_t v ){
|
||
|
|
v[0] = -v[0];
|
||
|
|
v[1] = -v[1];
|
||
|
|
v[2] = -v[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
void Vector4Scale( const vec4_t in, vec_t scale, vec4_t out ) {
|
||
|
|
out[0] = in[0]*scale;
|
||
|
|
out[1] = in[1]*scale;
|
||
|
|
out[2] = in[2]*scale;
|
||
|
|
out[3] = in[3]*scale;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int Q_log2( int val ) {
|
||
|
|
int answer;
|
||
|
|
|
||
|
|
answer = 0;
|
||
|
|
while ( ( val>>=1 ) != 0 ) {
|
||
|
|
answer++;
|
||
|
|
}
|
||
|
|
return answer;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
=================
|
||
|
|
PlaneTypeForNormal
|
||
|
|
=================
|
||
|
|
*/
|
||
|
|
int PlaneTypeForNormal (vec3_t normal) {
|
||
|
|
if ( normal[0] == 1.0 )
|
||
|
|
return PLANE_X;
|
||
|
|
if ( normal[1] == 1.0 )
|
||
|
|
return PLANE_Y;
|
||
|
|
if ( normal[2] == 1.0 )
|
||
|
|
return PLANE_Z;
|
||
|
|
|
||
|
|
return PLANE_NON_AXIAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
================
|
||
|
|
MatrixMultiply
|
||
|
|
================
|
||
|
|
*/
|
||
|
|
void MatrixMultiply(float in1[3][3], float in2[3][3], float out[3][3]) {
|
||
|
|
out[0][0] = in1[0][0] * in2[0][0] + in1[0][1] * in2[1][0] +
|
||
|
|
in1[0][2] * in2[2][0];
|
||
|
|
out[0][1] = in1[0][0] * in2[0][1] + in1[0][1] * in2[1][1] +
|
||
|
|
in1[0][2] * in2[2][1];
|
||
|
|
out[0][2] = in1[0][0] * in2[0][2] + in1[0][1] * in2[1][2] +
|
||
|
|
in1[0][2] * in2[2][2];
|
||
|
|
out[1][0] = in1[1][0] * in2[0][0] + in1[1][1] * in2[1][0] +
|
||
|
|
in1[1][2] * in2[2][0];
|
||
|
|
out[1][1] = in1[1][0] * in2[0][1] + in1[1][1] * in2[1][1] +
|
||
|
|
in1[1][2] * in2[2][1];
|
||
|
|
out[1][2] = in1[1][0] * in2[0][2] + in1[1][1] * in2[1][2] +
|
||
|
|
in1[1][2] * in2[2][2];
|
||
|
|
out[2][0] = in1[2][0] * in2[0][0] + in1[2][1] * in2[1][0] +
|
||
|
|
in1[2][2] * in2[2][0];
|
||
|
|
out[2][1] = in1[2][0] * in2[0][1] + in1[2][1] * in2[1][1] +
|
||
|
|
in1[2][2] * in2[2][1];
|
||
|
|
out[2][2] = in1[2][0] * in2[0][2] + in1[2][1] * in2[1][2] +
|
||
|
|
in1[2][2] * in2[2][2];
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void AngleVectors( const vec3_t angles, vec3_t forward, vec3_t right, vec3_t up) {
|
||
|
|
float angle;
|
||
|
|
static float sr, sp, sy, cr, cp, cy;
|
||
|
|
// static to help MS compiler fp bugs
|
||
|
|
|
||
|
|
angle = angles[YAW] * (M_PI*2 / 360);
|
||
|
|
sy = sin(angle);
|
||
|
|
cy = cos(angle);
|
||
|
|
angle = angles[PITCH] * (M_PI*2 / 360);
|
||
|
|
sp = sin(angle);
|
||
|
|
cp = cos(angle);
|
||
|
|
angle = angles[ROLL] * (M_PI*2 / 360);
|
||
|
|
sr = sin(angle);
|
||
|
|
cr = cos(angle);
|
||
|
|
|
||
|
|
if (forward)
|
||
|
|
{
|
||
|
|
forward[0] = cp*cy;
|
||
|
|
forward[1] = cp*sy;
|
||
|
|
forward[2] = -sp;
|
||
|
|
}
|
||
|
|
if (right)
|
||
|
|
{
|
||
|
|
right[0] = (-1*sr*sp*cy+-1*cr*-sy);
|
||
|
|
right[1] = (-1*sr*sp*sy+-1*cr*cy);
|
||
|
|
right[2] = -1*sr*cp;
|
||
|
|
}
|
||
|
|
if (up)
|
||
|
|
{
|
||
|
|
up[0] = (cr*sp*cy+-sr*-sy);
|
||
|
|
up[1] = (cr*sp*sy+-sr*cy);
|
||
|
|
up[2] = cr*cp;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
** assumes "src" is normalized
|
||
|
|
*/
|
||
|
|
void PerpendicularVector( vec3_t dst, const vec3_t src )
|
||
|
|
{
|
||
|
|
int pos;
|
||
|
|
int i;
|
||
|
|
float minelem = 1.0F;
|
||
|
|
vec3_t tempvec;
|
||
|
|
|
||
|
|
/*
|
||
|
|
** find the smallest magnitude axially aligned vector
|
||
|
|
** bias towards using z instead of x or y
|
||
|
|
*/
|
||
|
|
// for ( pos = 0, i = 0; i < 3; i++ )
|
||
|
|
for ( pos = 0, i = 2; i >= 0; i-- )
|
||
|
|
{
|
||
|
|
if ( fabs( src[i] ) < minelem )
|
||
|
|
{
|
||
|
|
pos = i;
|
||
|
|
minelem = fabs( src[i] );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
tempvec[0] = tempvec[1] = tempvec[2] = 0.0F;
|
||
|
|
tempvec[pos] = 1.0F;
|
||
|
|
|
||
|
|
/*
|
||
|
|
** project the point onto the plane defined by src
|
||
|
|
*/
|
||
|
|
ProjectPointOnPlane( dst, tempvec, src );
|
||
|
|
|
||
|
|
/*
|
||
|
|
** normalize the result
|
||
|
|
*/
|
||
|
|
VectorNormalize( dst );
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
** flrandom
|
||
|
|
Returns a float min <= x < max (exclusive; will get max - 0.00001; but never max
|
||
|
|
*/
|
||
|
|
float flrandom(float min, float max)
|
||
|
|
{
|
||
|
|
return ((rand() * (max - min)) / 32768.0F) + min;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
** irandom
|
||
|
|
Returns an integer min <= x <= max (ie inclusive)
|
||
|
|
*/
|
||
|
|
int irandom(int min, int max)
|
||
|
|
{
|
||
|
|
max++; //so it can round down
|
||
|
|
return ((rand() * (max - min)) >> 15) + min;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// use for networking - normalizes a vector, then multiplies it by 65535.0, then calls snap vector on it
|
||
|
|
// guarantee's a short per vector instead of 4 bytes.
|
||
|
|
|
||
|
|
void VectorShort(vec3_t vect)
|
||
|
|
{
|
||
|
|
VectorNormalize(vect);
|
||
|
|
vect[0] *= 8191.0;
|
||
|
|
vect[1] *= 8191.0;
|
||
|
|
vect[2] *= 8191.0;
|
||
|
|
SnapVector(vect);
|
||
|
|
}
|
||
|
|
|
||
|
|
void UnVectorShort(vec3_t vect)
|
||
|
|
{
|
||
|
|
vect[0] /= 8191.0;
|
||
|
|
vect[1] /= 8191.0;
|
||
|
|
vect[2] /= 8191.0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
float powf( float x, int y )
|
||
|
|
{
|
||
|
|
float r = x;
|
||
|
|
for ( y--; y>0; y-- )
|
||
|
|
r = r * r;
|
||
|
|
return r;
|
||
|
|
}
|
||
|
|
|
||
|
|
//TiM: Vector-Average. Good for calculating origins from bounding boxes
|
||
|
|
void VectorAverage( vec3_t mins, vec3_t maxs, vec3_t result ) {
|
||
|
|
vec3_t temp;
|
||
|
|
/*int i;
|
||
|
|
for ( i = 0; i < 3; i++ ) {
|
||
|
|
result[i] = ( mins[i] + maxs[i] ) * 0.5;
|
||
|
|
}*/
|
||
|
|
|
||
|
|
//TiM: I 'unno... this way looks l33ter lol
|
||
|
|
VectorAdd( mins, maxs, temp );
|
||
|
|
VectorScale( temp, 0.5, result );
|
||
|
|
}
|