goat3dgfx

annotate src/camera.cc @ 12:1868c5975f31

find changesets by author, revision, files, or words in the commit message
foo
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 24 Nov 2013 18:18:38 +0200
parents d061fe1a31ec
children 7d6b667821cf
rev   line source
nuclear@11 1 #include "opengl.h"
nuclear@11 2 #include "camera.h"
nuclear@12 3 #include "unistate.h"
nuclear@11 4 #include "vr.h"
nuclear@11 5
nuclear@11 6 Camera::Camera()
nuclear@11 7 {
nuclear@11 8 roll = 0.0;
nuclear@11 9 inval_cache();
nuclear@11 10 }
nuclear@11 11
nuclear@11 12 Camera::~Camera()
nuclear@11 13 {
nuclear@11 14 }
nuclear@11 15
nuclear@11 16 void Camera::calc_inv_matrix(Matrix4x4 *mat) const
nuclear@11 17 {
nuclear@11 18 *mat = matrix().inverse();
nuclear@11 19 }
nuclear@11 20
nuclear@11 21 const Matrix4x4 &Camera::matrix() const
nuclear@11 22 {
nuclear@11 23 if(!mcache.valid) {
nuclear@11 24 calc_matrix(&mcache.mat);
nuclear@11 25 mcache.valid = true;
nuclear@11 26 }
nuclear@11 27 return mcache.mat;
nuclear@11 28 }
nuclear@11 29
nuclear@11 30 const Matrix4x4 &Camera::inv_matrix() const
nuclear@11 31 {
nuclear@11 32 if(!mcache_inv.valid) {
nuclear@11 33 calc_inv_matrix(&mcache_inv.mat);
nuclear@11 34 mcache_inv.valid = true;
nuclear@11 35 }
nuclear@11 36 return mcache_inv.mat;
nuclear@11 37 }
nuclear@11 38
nuclear@11 39 void Camera::use() const
nuclear@11 40 {
nuclear@12 41 set_view_matrix(matrix());
nuclear@11 42 }
nuclear@11 43
nuclear@11 44 void Camera::use_inverse() const
nuclear@11 45 {
nuclear@12 46 set_view_matrix(inv_matrix());
nuclear@11 47 }
nuclear@11 48
nuclear@11 49 void Camera::input_move(float x, float y, float z)
nuclear@11 50 {
nuclear@11 51 }
nuclear@11 52
nuclear@11 53 void Camera::input_rotate(float x, float y, float z)
nuclear@11 54 {
nuclear@11 55 }
nuclear@11 56
nuclear@11 57 void Camera::input_zoom(float factor)
nuclear@11 58 {
nuclear@11 59 }
nuclear@11 60
nuclear@11 61
nuclear@11 62 // ---- orbit camera ----
nuclear@11 63
nuclear@11 64 OrbitCamera::OrbitCamera()
nuclear@11 65 {
nuclear@11 66 theta = 0.0;
nuclear@11 67 phi = 0.0;
nuclear@11 68 rad = 10.0;
nuclear@11 69 }
nuclear@11 70
nuclear@11 71 OrbitCamera::~OrbitCamera()
nuclear@11 72 {
nuclear@11 73 }
nuclear@11 74
nuclear@11 75 void OrbitCamera::calc_matrix(Matrix4x4 *mat) const
nuclear@11 76 {
nuclear@11 77 mat->reset_identity();
nuclear@11 78 mat->translate(Vector3(0, 0, -rad));
nuclear@11 79 mat->rotate(Vector3(phi, 0, 0));
nuclear@11 80 mat->rotate(Vector3(0, theta, 0));
nuclear@11 81 mat->rotate(Vector3(0, 0, roll));
nuclear@11 82 }
nuclear@11 83
nuclear@11 84 void OrbitCamera::calc_inv_matrix(Matrix4x4 *mat) const
nuclear@11 85 {
nuclear@11 86 mat->reset_identity();
nuclear@11 87 mat->rotate(Vector3(0, 0, roll));
nuclear@11 88 mat->rotate(Vector3(0, theta, 0));
nuclear@11 89 mat->rotate(Vector3(phi, 0, 0));
nuclear@11 90 mat->translate(Vector3(0, 0, -rad));
nuclear@11 91 }
nuclear@11 92
nuclear@11 93 void OrbitCamera::input_rotate(float x, float y, float z)
nuclear@11 94 {
nuclear@11 95 theta += y;
nuclear@11 96 phi += x;
nuclear@11 97 roll += z;
nuclear@11 98
nuclear@11 99 if(phi < -M_PI / 2)
nuclear@11 100 phi = -M_PI / 2;
nuclear@11 101 if(phi > M_PI)
nuclear@11 102 phi = M_PI;
nuclear@11 103
nuclear@11 104 inval_cache();
nuclear@11 105 }
nuclear@11 106
nuclear@11 107 void OrbitCamera::input_zoom(float factor)
nuclear@11 108 {
nuclear@11 109 rad += factor;
nuclear@11 110 if(rad < 0.0)
nuclear@11 111 rad = 0.0;
nuclear@11 112
nuclear@11 113 inval_cache();
nuclear@11 114 }
nuclear@11 115
nuclear@11 116 void FpsCamera::calc_matrix(Matrix4x4 *mat) const
nuclear@11 117 {
nuclear@11 118 mat->reset_identity();
nuclear@11 119 mat->translate(Vector3(pos.x, pos.y, pos.z));
nuclear@11 120 mat->rotate(Vector3(0, theta, 0));
nuclear@11 121 mat->rotate(Vector3(phi, 0, 0));
nuclear@11 122 mat->rotate(Vector3(0, 0, roll));
nuclear@11 123 }
nuclear@11 124
nuclear@11 125 void FpsCamera::calc_inv_matrix(Matrix4x4 *mat) const
nuclear@11 126 {
nuclear@11 127 mat->reset_identity();
nuclear@11 128 mat->rotate(Vector3(0, 0, roll));
nuclear@11 129 mat->rotate(Vector3(phi, 0, 0));
nuclear@11 130 mat->rotate(Vector3(0, theta, 0));
nuclear@11 131 mat->translate(Vector3(-pos.x, -pos.y, -pos.z));
nuclear@11 132 }
nuclear@11 133
nuclear@11 134 void FpsCamera::input_move(float x, float y, float z)
nuclear@11 135 {
nuclear@11 136 pos.x += x * cos(theta) - z * sin(theta);
nuclear@11 137 pos.z += x * sin(theta) + z * cos(theta);
nuclear@11 138 pos.y += y;
nuclear@11 139 inval_cache();
nuclear@11 140 }
nuclear@11 141
nuclear@11 142 const Vector3 &FpsCamera::get_position() const
nuclear@11 143 {
nuclear@11 144 return pos;
nuclear@11 145 }
nuclear@11 146
nuclear@11 147
nuclear@11 148 FlyCamera::FlyCamera()
nuclear@11 149 {
nuclear@11 150 pos.z = 10.0f;
nuclear@11 151 }
nuclear@11 152
nuclear@11 153 void FlyCamera::calc_matrix(Matrix4x4 *mat) const
nuclear@11 154 {
nuclear@11 155 Matrix3x3 rmat = rot.get_rotation_matrix().transposed();
nuclear@11 156 Matrix4x4 tmat;
nuclear@11 157 tmat.set_translation(pos);
nuclear@11 158 *mat = tmat * Matrix4x4(rmat);
nuclear@11 159 }
nuclear@11 160
nuclear@11 161 /*void FlyCamera::calc_inv_matrix(Matrix4x4 *mat) const
nuclear@11 162 {
nuclear@11 163 }*/
nuclear@11 164
nuclear@11 165 const Vector3 &FlyCamera::get_position() const
nuclear@11 166 {
nuclear@11 167 return pos;
nuclear@11 168 }
nuclear@11 169
nuclear@11 170 const Quaternion &FlyCamera::get_rotation() const
nuclear@11 171 {
nuclear@11 172 return rot;
nuclear@11 173 }
nuclear@11 174
nuclear@11 175 void FlyCamera::input_move(float x, float y, float z)
nuclear@11 176 {
nuclear@11 177 static const Vector3 vfwd(0, 0, 1), vright(1, 0, 0);
nuclear@11 178
nuclear@11 179 Vector3 k = vfwd.transformed(rot);
nuclear@11 180 Vector3 i = vright.transformed(rot);
nuclear@11 181 Vector3 j = cross_product(k, i);
nuclear@11 182
nuclear@11 183 pos += i * x + j * y + k * z;
nuclear@11 184 inval_cache();
nuclear@11 185 }
nuclear@11 186
nuclear@11 187 void FlyCamera::input_rotate(float x, float y, float z)
nuclear@11 188 {
nuclear@11 189 Vector3 axis(x, y, z);
nuclear@11 190 float axis_len = axis.length();
nuclear@11 191 rot.rotate(axis / axis_len, axis_len);
nuclear@11 192 rot.normalize();
nuclear@11 193
nuclear@11 194 inval_cache();
nuclear@11 195 }
nuclear@11 196
nuclear@11 197
nuclear@11 198 // --- VR additions ---
nuclear@11 199 VRFpsCamera::VRFpsCamera()
nuclear@11 200 {
nuclear@11 201 neck_eye_dist = 0.14; // default neck->eye distance 14cm
nuclear@11 202 }
nuclear@11 203
nuclear@11 204 void VRFpsCamera::calc_matrix(Matrix4x4 *mat) const
nuclear@11 205 {
nuclear@11 206 mat->reset_identity();
nuclear@11 207 mat->translate(Vector3(pos.x, pos.y, pos.z));
nuclear@11 208 mat->rotate(Vector3(0, theta, 0));
nuclear@11 209 mat->rotate(Vector3(phi, 0, 0));
nuclear@11 210 mat->rotate(Vector3(0, 0, roll));
nuclear@11 211 mat->translate(Vector3(0, neck_eye_dist, 0));
nuclear@11 212 }
nuclear@11 213
nuclear@11 214 void VRFpsCamera::calc_inv_matrix(Matrix4x4 *mat) const
nuclear@11 215 {
nuclear@11 216 mat->reset_identity();
nuclear@11 217 mat->translate(Vector3(0, -neck_eye_dist, 0));
nuclear@11 218 mat->rotate(Vector3(0, 0, roll));
nuclear@11 219 mat->rotate(Vector3(phi, 0, 0));
nuclear@11 220 mat->rotate(Vector3(0, theta, 0));
nuclear@11 221 mat->translate(Vector3(-pos.x, -pos.y, -pos.z));
nuclear@11 222 }
nuclear@11 223
nuclear@11 224 void VRFpsCamera::track_vr()
nuclear@11 225 {
nuclear@11 226 float euler[3];
nuclear@11 227 vr_get_rotation_euler(euler);
nuclear@11 228
nuclear@11 229 // input_rotate invalidates cache
nuclear@11 230 input_rotate(prev_angles[0] - euler[0], prev_angles[1] - euler[1], prev_angles[2] - euler[2]);
nuclear@11 231
nuclear@11 232 prev_angles[0] = euler[0];
nuclear@11 233 prev_angles[1] = euler[1];
nuclear@11 234 prev_angles[2] = euler[2];
nuclear@11 235 }
nuclear@11 236