| … | |
… | |
| 109 | GLdouble ftan = tan (fov * (.5 * M_PI / 180.)); |
109 | GLdouble ftan = tan (fov * (.5 * M_PI / 180.)); |
| 110 | GLdouble ymax = z_near * ftan; |
110 | GLdouble ymax = z_near * ftan; |
| 111 | GLdouble xmax = ymax * aspect; |
111 | GLdouble xmax = ymax * aspect; |
| 112 | |
112 | |
| 113 | matrix perspective; |
113 | matrix perspective; |
| 114 | #if 0 |
114 | #if 1 |
| 115 | { |
115 | { |
| 116 | matrix &m = perspective; |
116 | matrix &m = perspective; |
| 117 | m(0,0) = rx.x; m(0,1) = rx.y; m(0,2) = rx.z; m(0,3) = 0; |
117 | |
| 118 | m(1,0) = ry.x; m(1,1) = ry.y; m(1,2) = ry.z; m(1,3) = 0; |
118 | m(0,0) = 1.F / xmax; m(0,1) = 0; m(0,2) = 0; m(0,3) = 0; |
| 119 | m(2,0) = rz.x; m(2,1) = rz.y; m(2,2) = rz.z; m(2,3) = 0; |
119 | m(1,0) = 0; m(1,1) = 1.F / ymax; m(1,2) = 0; m(1,3) = 0; |
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120 | m(2,0) = 0; m(2,1) = 0; m(2,2) = -2.F / z_far; m(2,3) = 0; |
| 120 | m(3,0) = 0; m(3,1) = 0; m(3,2) = 0; m(3,3) = 1; |
121 | m(3,0) = 0; m(3,1) = 0; m(3,2) = -1; m(3,3) = 0; |
| 121 | |
122 | |
| 122 | LoadMatrixf (perspective); |
123 | glLoadMatrixf (perspective); |
| 123 | } |
124 | } |
| 124 | #else |
125 | #else |
| 125 | glFrustum (-xmax, xmax, -ymax, ymax, z_near, z_far); |
126 | glFrustum (-xmax, xmax, -ymax, ymax, z_near, z_far); |
| 126 | #endif |
127 | #endif |
| 127 | |
128 | |
