| 479 | //----------------------------------------------------------------------------- |
| 480 | |
| 481 | void mProjectScreenToWorld( const Point3F &in, |
| 482 | Point3F *out, |
| 483 | const RectI &view, |
| 484 | const MatrixF &world, |
| 485 | const MatrixF &projection, |
| 486 | F32 zfar, |
| 487 | F32 znear ) |
| 488 | { |
| 489 | MatrixF invWorldProjection = projection; |
| 490 | invWorldProjection.mul(world); |
| 491 | invWorldProjection.inverse(); |
| 492 | |
| 493 | Point3F vec; |
| 494 | vec.x = (in.x - view.point.x) * 2.0f / view.extent.x - 1.0f; |
| 495 | vec.y = -(in.y - view.point.y) * 2.0f / view.extent.y + 1.0f; |
| 496 | vec.z = (znear + in.z * (zfar - znear))/zfar; |
| 497 | |
| 498 | invWorldProjection.mulV(vec); |
| 499 | vec *= 1.0f + in.z * zfar; |
| 500 | |
| 501 | invWorldProjection.getColumn(3, out); |
| 502 | (*out) += vec; |
| 503 | } |
| 504 | |
| 505 | //----------------------------------------------------------------------------- |
| 506 | |