From 0168fec001c184256b49314a606a9113e14c819c Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 12 Feb 2026 09:01:06 +0000
Subject: [PATCH 1/2] Initial plan
From 688dee116f394d577ef7741178855b8c76d08f58 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 12 Feb 2026 09:06:44 +0000
Subject: [PATCH 2/2] Implement makehgtform and improve camproj for Octave
compatibility
Co-authored-by: moyner <454871+moyner@users.noreply.github.com>
---
core/utils/octave_only/builtin/camproj.m | 29 +++++-
core/utils/octave_only/builtin/makehgtform.m | 101 ++++++++++++++++++-
2 files changed, 124 insertions(+), 6 deletions(-)
diff --git a/core/utils/octave_only/builtin/camproj.m b/core/utils/octave_only/builtin/camproj.m
index 55d7f1284..da0689fce 100644
--- a/core/utils/octave_only/builtin/camproj.m
+++ b/core/utils/octave_only/builtin/camproj.m
@@ -1,5 +1,21 @@
-function camproj()
-%Undocumented Utility Function
+function varargout = camproj(varargin)
+%Set or get camera projection mode (Octave stub)
+%
+% SYNOPSIS:
+% camproj('perspective')
+% camproj('orthographic')
+% mode = camproj()
+%
+% DESCRIPTION:
+% Octave-compatible stub for camproj. This function provides basic
+% compatibility but does not actually change the camera projection in
+% Octave, as this feature is not fully supported. The function silently
+% accepts the commands without error to allow scripts to run.
+%
+% NOTE:
+% In Octave, perspective vs orthographic projection may not be fully
+% supported or may behave differently than in MATLAB. This stub allows
+% code to run without errors, but visual output may differ.
%{
Copyright 2009-2024 SINTEF Digital, Mathematics & Cybernetics.
@@ -20,5 +36,12 @@ This file is part of The MATLAB Reservoir Simulation Toolbox (MRST).
along with MRST. If not, see .
%}
- warning("camproj not implemented in octave")
+ % Silently accept the command
+ % In Octave, camera projection mode is not fully implemented
+ % This stub allows scripts to run without errors
+
+ if nargout > 0
+ % If output is requested, return 'orthographic' as default
+ varargout{1} = 'orthographic';
+ end
end
diff --git a/core/utils/octave_only/builtin/makehgtform.m b/core/utils/octave_only/builtin/makehgtform.m
index b8580ebf6..99a539de3 100644
--- a/core/utils/octave_only/builtin/makehgtform.m
+++ b/core/utils/octave_only/builtin/makehgtform.m
@@ -1,5 +1,22 @@
-function makehgtform()
-%Undocumented Utility Function
+function T = makehgtform(varargin)
+%Create 4x4 transformation matrix for graphics
+%
+% SYNOPSIS:
+% T = makehgtform('xrotate', angle)
+% T = makehgtform('yrotate', angle)
+% T = makehgtform('zrotate', angle)
+%
+% DESCRIPTION:
+% Octave-compatible implementation of makehgtform for basic rotations.
+% Creates a 4x4 homogeneous transformation matrix for graphics objects.
+%
+% PARAMETERS:
+% 'xrotate', angle - Rotation around X-axis by angle (in radians)
+% 'yrotate', angle - Rotation around Y-axis by angle (in radians)
+% 'zrotate', angle - Rotation around Z-axis by angle (in radians)
+%
+% RETURNS:
+% T - 4x4 homogeneous transformation matrix
%{
Copyright 2009-2024 SINTEF Digital, Mathematics & Cybernetics.
@@ -20,5 +37,83 @@ This file is part of The MATLAB Reservoir Simulation Toolbox (MRST).
along with MRST. If not, see .
%}
- error('toimplement')
+ % Initialize as identity matrix
+ T = eye(4);
+
+ % Process arguments
+ i = 1;
+ while i <= length(varargin)
+ arg = varargin{i};
+
+ if ischar(arg)
+ switch lower(arg)
+ case 'xrotate'
+ if i+1 <= length(varargin)
+ angle = varargin{i+1};
+ T = T * xrotation_matrix(angle);
+ i = i + 2;
+ else
+ error('makehgtform:MissingAngle', ...
+ 'xrotate requires an angle argument');
+ end
+
+ case 'yrotate'
+ if i+1 <= length(varargin)
+ angle = varargin{i+1};
+ T = T * yrotation_matrix(angle);
+ i = i + 2;
+ else
+ error('makehgtform:MissingAngle', ...
+ 'yrotate requires an angle argument');
+ end
+
+ case 'zrotate'
+ if i+1 <= length(varargin)
+ angle = varargin{i+1};
+ T = T * zrotation_matrix(angle);
+ i = i + 2;
+ else
+ error('makehgtform:MissingAngle', ...
+ 'zrotate requires an angle argument');
+ end
+
+ otherwise
+ error('makehgtform:UnsupportedTransform', ...
+ 'Transformation ''%s'' not implemented in Octave version', arg);
+ end
+ else
+ error('makehgtform:InvalidArgument', ...
+ 'Expected string transformation type');
+ end
+ end
+end
+
+function T = xrotation_matrix(angle)
+ % Rotation around X-axis
+ c = cos(angle);
+ s = sin(angle);
+ T = [1, 0, 0, 0;
+ 0, c, -s, 0;
+ 0, s, c, 0;
+ 0, 0, 0, 1];
+end
+
+function T = yrotation_matrix(angle)
+ % Rotation around Y-axis
+ c = cos(angle);
+ s = sin(angle);
+ T = [ c, 0, s, 0;
+ 0, 1, 0, 0;
+ -s, 0, c, 0;
+ 0, 0, 0, 1];
+end
+
+function T = zrotation_matrix(angle)
+ % Rotation around Z-axis
+ c = cos(angle);
+ s = sin(angle);
+ T = [c, -s, 0, 0;
+ s, c, 0, 0;
+ 0, 0, 1, 0;
+ 0, 0, 0, 1];
end