e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
130 lines
3.4 KiB
C++
130 lines
3.4 KiB
C++
/* SPDX-FileCopyrightText: 2008-2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup freestyle
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* \brief Class to represent a light node
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*/
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#include <cmath>
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#include <cstring> // for memcpy
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#include "NodeCamera.h"
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namespace Freestyle {
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static void loadIdentity(double *matrix)
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{
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int i;
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// Build Identity matrix
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for (i = 0; i < 16; ++i) {
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double value;
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if ((i % 5) == 0) {
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value = 1.0;
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}
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else {
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value = 0;
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}
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matrix[i] = value;
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}
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}
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NodeCamera::NodeCamera(CameraType camera_type) : camera_type_(camera_type)
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{
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loadIdentity(modelview_matrix_);
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loadIdentity(projection_matrix_);
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}
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#if 0 /* UNUSED, gives warning in gcc */
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NodeCamera::NodeCamera(const NodeCamera &iBrother) : camera_type_(iBrother.camera_type_)
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{
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memcpy(modelview_matrix_, iBrother.modelview_matrix_, sizeof(double[16]));
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memcpy(projection_matrix_, iBrother.projection_matrix_, sizeof(double[16]));
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}
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#endif
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void NodeCamera::accept(SceneVisitor &v)
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{
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v.visitNodeCamera(*this);
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}
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void NodeCamera::setModelViewMatrix(double modelview_matrix[16])
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{
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memcpy(modelview_matrix_, modelview_matrix, sizeof(double[16]));
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}
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void NodeCamera::setProjectionMatrix(double projection_matrix[16])
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{
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memcpy(projection_matrix_, projection_matrix, sizeof(double[16]));
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}
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NodeOrthographicCamera::NodeOrthographicCamera()
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: NodeCamera(NodeCamera::ORTHOGRAPHIC),
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left_(0),
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right_(0),
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bottom_(0),
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top_(0),
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zNear_(0),
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zFar_(0)
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{
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loadIdentity(projection_matrix_);
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loadIdentity(modelview_matrix_);
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}
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NodeOrthographicCamera::NodeOrthographicCamera(
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double left, double right, double bottom, double top, double zNear, double zFar)
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: NodeCamera(NodeCamera::ORTHOGRAPHIC),
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left_(left),
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right_(right),
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bottom_(bottom),
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top_(top),
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zNear_(zNear),
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zFar_(zFar)
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{
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loadIdentity(projection_matrix_);
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projection_matrix_[0] = 2.0 / (right - left);
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projection_matrix_[3] = -(right + left) / (right - left);
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projection_matrix_[5] = 2.0 / (top - bottom);
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projection_matrix_[7] = -(top + bottom) / (top - bottom);
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projection_matrix_[10] = -2.0 / (zFar - zNear);
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projection_matrix_[11] = -(zFar + zNear) / (zFar - zNear);
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}
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NodePerspectiveCamera::NodePerspectiveCamera() : NodeCamera(NodeCamera::PERSPECTIVE) {}
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NodePerspectiveCamera::NodePerspectiveCamera(double fovy, double aspect, double zNear, double zFar)
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: NodeCamera(NodeCamera::PERSPECTIVE)
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{
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loadIdentity(projection_matrix_);
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double f = cos(fovy / 2.0) / sin(fovy / 2.0); // cotangent
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projection_matrix_[0] = f / aspect;
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projection_matrix_[5] = f;
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projection_matrix_[10] = (zNear + zFar) / (zNear - zFar);
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projection_matrix_[11] = (2.0 * zNear * zFar) / (zNear - zFar);
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projection_matrix_[14] = -1.0;
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projection_matrix_[15] = 0;
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}
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NodePerspectiveCamera::NodePerspectiveCamera(
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double left, double right, double bottom, double top, double zNear, double zFar)
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: NodeCamera(NodeCamera::PERSPECTIVE)
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{
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loadIdentity(projection_matrix_);
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projection_matrix_[0] = (2.0 * zNear) / (right - left);
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projection_matrix_[2] = (right + left) / (right - left);
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projection_matrix_[5] = (2.0 * zNear) / (top - bottom);
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projection_matrix_[6] = (top + bottom) / (top - bottom);
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projection_matrix_[10] = -(zFar + zNear) / (zFar - zNear);
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projection_matrix_[11] = -(2.0 * zFar * zNear) / (zFar - zNear);
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projection_matrix_[14] = -1.0;
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projection_matrix_[15] = 0;
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}
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} /* namespace Freestyle */
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