diff options
Diffstat (limited to 'core/math/camera_matrix.cpp')
| -rw-r--r-- | core/math/camera_matrix.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/core/math/camera_matrix.cpp b/core/math/camera_matrix.cpp index 9ec71af57f..1066cf5e30 100644 --- a/core/math/camera_matrix.cpp +++ b/core/math/camera_matrix.cpp @@ -74,13 +74,22 @@ Plane CameraMatrix::xform4(const Plane &p_vec4) const { return ret; } +void CameraMatrix::adjust_perspective_znear(real_t p_new_znear) { + real_t zfar = get_z_far(); + real_t znear = p_new_znear; + + real_t deltaZ = zfar - znear; + matrix[2][2] = -(zfar + znear) / deltaZ; + matrix[3][2] = -2 * znear * zfar / deltaZ; +} + void CameraMatrix::set_perspective(real_t p_fovy_degrees, real_t p_aspect, real_t p_z_near, real_t p_z_far, bool p_flip_fov) { if (p_flip_fov) { p_fovy_degrees = get_fovy(p_fovy_degrees, 1.0 / p_aspect); } real_t sine, cotangent, deltaZ; - real_t radians = p_fovy_degrees / 2.0 * Math_PI / 180.0; + real_t radians = Math::deg2rad(p_fovy_degrees / 2.0); deltaZ = p_z_far - p_z_near; sine = Math::sin(radians); @@ -107,7 +116,7 @@ void CameraMatrix::set_perspective(real_t p_fovy_degrees, real_t p_aspect, real_ real_t left, right, modeltranslation, ymax, xmax, frustumshift; - ymax = p_z_near * tan(p_fovy_degrees * Math_PI / 360.0f); + ymax = p_z_near * tan(Math::deg2rad(p_fovy_degrees / 2.0)); xmax = ymax * p_aspect; frustumshift = (p_intraocular_dist / 2.0) * p_z_near / p_convergence_dist; |