mirror of
https://github.com/jmarshall23/DoomRTX.git
synced 2026-08-12 08:11:10 +02:00
Justin Marshall
592 lines
11 KiB
C++
592 lines
11 KiB
C++
/*
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===========================================================================
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IceTech GPL Source Code
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Copyright (C) 2026 Justin Marshall
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This file is part of the IceTech GPL Source Code (?IceTech Source Code?).
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IceTech Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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IceTech Source Code is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with IceTech Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the IceTech Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the IceTech Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing Justin Marshall, justinmarshall20@gmail.com
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===========================================================================
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*/
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#include "precompiled.h"
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#pragma hdrstop
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idVec2 vec2_origin(0.0f, 0.0f);
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idVec3 vec3_origin(0.0f, 0.0f, 0.0f);
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idVec4 vec4_one(1.0f, 1.0f, 1.0f, 1.0f);
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idVec4 vec4_origin(0.0f, 0.0f, 0.0f, 0.0f);
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idVec5 vec5_origin(0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
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idVec6 vec6_origin(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
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idVec6 vec6_infinity(idMath::INFINITY, idMath::INFINITY, idMath::INFINITY, idMath::INFINITY, idMath::INFINITY, idMath::INFINITY);
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//===============================================================
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//
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// idVec2
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//
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//===============================================================
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/*
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=============
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idVec2::ToString
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=============
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*/
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const char* idVec2::ToString(int precision) const {
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return idStr::FloatArrayToString(ToFloatPtr(), GetDimension(), precision);
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}
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/*
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=============
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Lerp
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Linearly inperpolates one vector to another.
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=============
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*/
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void idVec2::Lerp(const idVec2& v1, const idVec2& v2, const float l) {
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if (l <= 0.0f) {
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(*this) = v1;
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}
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else if (l >= 1.0f) {
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(*this) = v2;
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}
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else {
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(*this) = v1 + l * (v2 - v1);
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}
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}
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//===============================================================
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//
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// idVec3
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//
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//===============================================================
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/*
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=============
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idVec3::ToYaw
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=============
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*/
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float idVec3::ToYaw(void) const {
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float yaw;
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if ((y == 0.0f) && (x == 0.0f)) {
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yaw = 0.0f;
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}
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else {
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#ifdef QUAKE4
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yaw = RAD2DEG(idMath::ATan(y, x));
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#else
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yaw = RAD2DEG(atan2(y, x));
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#endif
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if (yaw < 0.0f) {
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yaw += 360.0f;
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}
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}
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return yaw;
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}
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/*
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=============
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idVec3::ToPitch
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=============
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*/
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float idVec3::ToPitch(void) const {
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float forward;
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float pitch;
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if ((x == 0.0f) && (y == 0.0f)) {
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if (z > 0.0f) {
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pitch = 90.0f;
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}
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else {
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pitch = 270.0f;
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}
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}
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else {
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forward = (float)idMath::Sqrt(x * x + y * y);
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#ifdef QUAKE4
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pitch = RAD2DEG(idMath::ATan(z, forward));
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#else
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pitch = RAD2DEG(atan2(z, forward));
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#endif
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if (pitch < 0.0f) {
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pitch += 360.0f;
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}
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}
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return pitch;
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}
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/*
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=============
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idVec3::ToAngles
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=============
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*/
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idAngles idVec3::ToAngles(void) const {
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float forward;
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float yaw;
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float pitch;
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if ((x == 0.0f) && (y == 0.0f)) {
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yaw = 0.0f;
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if (z > 0.0f) {
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pitch = 90.0f;
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}
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else {
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pitch = 270.0f;
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}
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}
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else {
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#ifdef QUAKE4
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yaw = RAD2DEG(idMath::ATan(y, x));
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#else
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yaw = RAD2DEG(atan2(y, x));
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#endif
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if (yaw < 0.0f) {
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yaw += 360.0f;
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}
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forward = (float)idMath::Sqrt(x * x + y * y);
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#ifdef QUAKE4
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pitch = RAD2DEG(idMath::ATan(z, forward));
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#else
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pitch = RAD2DEG(atan2(z, forward));
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#endif
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if (pitch < 0.0f) {
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pitch += 360.0f;
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}
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}
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return idAngles(-pitch, yaw, 0.0f);
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}
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#ifdef QUAKE4
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/*
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=============
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idVec3::ToRadians
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=============
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*/
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rvAngles idVec3::ToRadians(void) const {
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float forward;
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float yaw;
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float pitch;
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if ((x == 0.0f) && (y == 0.0f)) {
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yaw = 0.0f;
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if (z > 0.0f) {
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pitch = idMath::HALF_PI;
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}
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else {
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pitch = idMath::THREEFOURTHS_PI;
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}
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}
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else {
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yaw = idMath::ATan(y, x);
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if (yaw < 0.0f) {
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yaw += idMath::TWO_PI;
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}
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forward = (float)idMath::Sqrt(x * x + y * y);
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pitch = idMath::ATan(z, forward);
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if (pitch < 0.0f) {
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pitch += idMath::TWO_PI;
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}
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}
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return rvAngles(-pitch, yaw, 0.0f);
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}
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#endif
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/*
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=============
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idVec3::ToPolar
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=============
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*/
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idPolar3 idVec3::ToPolar(void) const {
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float forward;
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float yaw;
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float pitch;
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if ((x == 0.0f) && (y == 0.0f)) {
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yaw = 0.0f;
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if (z > 0.0f) {
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pitch = 90.0f;
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}
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else {
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pitch = 270.0f;
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}
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}
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else {
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#ifdef QUAKE4
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yaw = RAD2DEG(idMath::ATan(y, x));
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#else
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yaw = RAD2DEG(atan2(y, x));
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#endif
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if (yaw < 0.0f) {
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yaw += 360.0f;
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}
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forward = (float)idMath::Sqrt(x * x + y * y);
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#ifdef QUAKE4
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pitch = RAD2DEG(idMath::ATan(z, forward));
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#else
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pitch = RAD2DEG(atan2(z, forward));
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#endif
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if (pitch < 0.0f) {
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pitch += 360.0f;
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}
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}
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return idPolar3(idMath::Sqrt(x * x + y * y + z * z), yaw, -pitch);
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}
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/*
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=============
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idVec3::ToMat3
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=============
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*/
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idMat3 idVec3::ToMat3(void) const {
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idMat3 mat;
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float d;
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mat[0] = *this;
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d = x * x + y * y;
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if (!d) {
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mat[1][0] = 1.0f;
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mat[1][1] = 0.0f;
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mat[1][2] = 0.0f;
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}
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else {
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d = idMath::InvSqrt(d);
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mat[1][0] = -y * d;
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mat[1][1] = x * d;
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mat[1][2] = 0.0f;
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}
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mat[2] = Cross(mat[1]);
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return mat;
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}
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#ifdef QUAKE4
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/*
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=============
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idVec3::ToMat3
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=============
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*/
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idMat3 idVec3::ToMat3(int axis) const {
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idMat3 mat;
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float d;
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int index_x = axis % GetDimension();
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int index_y = (axis + 1) % GetDimension();
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int index_z = (axis + 2) % GetDimension();
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float local_x = (*this)[index_x];
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float local_y = (*this)[index_y];
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mat[axis] = *this;
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d = local_x * local_x + local_y * local_y;
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if (!d) {
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mat[index_y][index_x] = 1.0f;
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mat[index_y][index_y] = 0.0f;
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mat[index_y][index_z] = 0.0f;
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}
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else {
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d = idMath::InvSqrt(d);
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mat[index_y][index_x] = -local_y * d;
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mat[index_y][index_y] = local_x * d;
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mat[index_y][index_z] = 0.0f;
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}
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mat[index_z] = Cross(mat[index_y]);
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return mat;
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}
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/*
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=============
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idVec3::ToMat3
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=============
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*/
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idMat3& idVec3::ToMat3(idMat3& mat) const {
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float d;
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mat[0] = *this;
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d = x * x + y * y;
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if (!d) {
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mat[1][0] = 1.0f;
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mat[1][1] = 0.0f;
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mat[1][2] = 0.0f;
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}
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else {
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d = idMath::InvSqrt(d);
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mat[1][0] = -y * d;
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mat[1][1] = x * d;
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mat[1][2] = 0.0f;
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}
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mat[2] = Cross(mat[1]);
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return mat;
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}
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#endif
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#ifdef PREY
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// HUMANHEAD nla
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/*
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=============
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idVec3::hhToMat3
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=============
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*/
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idMat3 idVec3::hhToMat3(void) const {
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idVec3 left;
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idVec3 down;
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// NormalVectors actually returns left and down
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NormalVectors(left, down);
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return idMat3(*this, left, -down);
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}
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// HUMANHEAD PDM: Vector conversion to/from axis aligned direction masks (6-bit vector compression)
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int idVec3::DirectionMask() const {
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int mask = 0;
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for (int term = 0; term < 3; term++) {
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mask += (*this)[term] < 0 ? 1 << (term << 1) : (*this)[term]>0 ? 1 << ((term << 1) + 1) : 0;
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}
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return mask;
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}
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idVec3::idVec3(int directionMask) {
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int negativeMask, positiveMask;
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for (int term = 0; term < 3; term++) {
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negativeMask = 1 << (term << 1);
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positiveMask = 1 << ((term << 1) + 1);
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(*this)[term] = (directionMask & negativeMask) ? -1 : (directionMask & positiveMask) ? 1 : 0;
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}
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}
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// HUMANHEAD END
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#endif
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/*
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=============
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idVec3::ToString
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=============
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*/
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const char* idVec3::ToString(int precision) const {
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return idStr::FloatArrayToString(ToFloatPtr(), GetDimension(), precision);
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}
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/*
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=============
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Lerp
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Linearly inperpolates one vector to another.
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=============
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*/
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void idVec3::Lerp(const idVec3& v1, const idVec3& v2, const float l) {
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if (l <= 0.0f) {
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(*this) = v1;
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}
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else if (l >= 1.0f) {
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(*this) = v2;
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}
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else {
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(*this) = v1 + l * (v2 - v1);
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}
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}
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/*
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=============
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SLerp
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Spherical linear interpolation from v1 to v2.
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Vectors are expected to be normalized.
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=============
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*/
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#define LERP_DELTA 1e-6
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void idVec3::SLerp(const idVec3& v1, const idVec3& v2, const float t) {
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float omega, cosom, sinom, scale0, scale1;
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if (t <= 0.0f) {
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(*this) = v1;
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return;
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}
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else if (t >= 1.0f) {
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(*this) = v2;
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return;
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}
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cosom = v1 * v2;
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if ((1.0f - cosom) > LERP_DELTA) {
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omega = acos(cosom);
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#ifdef QUAKE4
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sinom = idMath::Sin(omega);
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scale0 = idMath::Sin((1.0f - t) * omega) / sinom;
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scale1 = idMath::Sin(t * omega) / sinom;
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#else
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sinom = sin(omega);
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scale0 = sin((1.0f - t) * omega) / sinom;
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scale1 = sin(t * omega) / sinom;
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#endif
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}
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else {
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scale0 = 1.0f - t;
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scale1 = t;
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}
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(*this) = (v1 * scale0 + v2 * scale1);
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}
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/*
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=============
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ProjectSelfOntoSphere
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Projects the z component onto a sphere.
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=============
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*/
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void idVec3::ProjectSelfOntoSphere(const float radius) {
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float rsqr = radius * radius;
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float len = Length();
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if (len < rsqr * 0.5f) {
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#ifdef QUAKE4
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z = idMath::Sqrt(rsqr - len);
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#else
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z = sqrt(rsqr - len);
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#endif
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}
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else {
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#ifdef QUAKE4
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z = rsqr / (2.0f * idMath::Sqrt(len));
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#else
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z = rsqr / (2.0f * sqrt(len));
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#endif
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}
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}
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//===============================================================
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//
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// idVec4
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//
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//===============================================================
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/*
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=============
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idVec4::ToString
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=============
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*/
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const char* idVec4::ToString(int precision) const {
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return idStr::FloatArrayToString(ToFloatPtr(), GetDimension(), precision);
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}
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/*
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=============
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Lerp
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Linearly inperpolates one vector to another.
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=============
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*/
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void idVec4::Lerp(const idVec4& v1, const idVec4& v2, const float l) {
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if (l <= 0.0f) {
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(*this) = v1;
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}
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else if (l >= 1.0f) {
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(*this) = v2;
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}
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else {
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(*this) = v1 + l * (v2 - v1);
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}
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}
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//===============================================================
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//
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// idVec5
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//
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//===============================================================
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/*
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=============
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idVec5::ToString
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=============
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*/
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const char* idVec5::ToString(int precision) const {
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return idStr::FloatArrayToString(ToFloatPtr(), GetDimension(), precision);
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}
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/*
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=============
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idVec5::Lerp
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=============
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*/
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void idVec5::Lerp(const idVec5& v1, const idVec5& v2, const float l) {
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if (l <= 0.0f) {
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(*this) = v1;
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}
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else if (l >= 1.0f) {
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(*this) = v2;
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}
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else {
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x = v1.x + l * (v2.x - v1.x);
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y = v1.y + l * (v2.y - v1.y);
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z = v1.z + l * (v2.z - v1.z);
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s = v1.s + l * (v2.s - v1.s);
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t = v1.t + l * (v2.t - v1.t);
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}
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}
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//===============================================================
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//
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// idVec6
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//
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//===============================================================
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|
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/*
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=============
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idVec6::ToString
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=============
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*/
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const char* idVec6::ToString(int precision) const {
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return idStr::FloatArrayToString(ToFloatPtr(), GetDimension(), precision);
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}
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//===============================================================
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//
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// idVecX
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//
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//===============================================================
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#ifdef QUAKE4
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float idVecX::tempPtr[VECX_MAX_TEMP];
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#else
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float idVecX::temp[VECX_MAX_TEMP + 4];
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float* idVecX::tempPtr = (float*)(((INT_PTR)idVecX::temp + 15) & ~15);
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#endif
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int idVecX::tempIndex = 0;
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/*
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=============
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idVecX::ToString
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=============
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*/
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const char* idVecX::ToString(int precision) const {
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return idStr::FloatArrayToString(ToFloatPtr(), GetDimension(), precision);
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}
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