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math.algebra.linear.d3: Handle case in 'unProject' where 'world_Position (4) = 0.0'.

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This commit is contained in:
Rod Kay
2024-01-09 16:56:47 +11:00
parent d86438fe5b
commit ee2108ad2b
1 changed files with 6 additions and 5 deletions
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11
1-base/math/source/generic/pure/algebra/any_math-any_algebra-any_linear-any_d3.adb
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@@ -880,13 +880,14 @@ is
if world_Position (4) = 0.0
then
raise Constraint_Error with "unProject: world_Position (4) = 0.0";
else
world_Position (1) := world_Position (1) / world_Position (4);
world_Position (2) := world_Position (2) / world_Position (4);
world_Position (3) := world_Position (3) / world_Position (4);
world_Position (4) := Real'Epsilon;
-- raise Constraint_Error with "unProject: world_Position (4) = 0.0"; -- TODO: Find out why this happens.
end if;
world_Position (1) := world_Position (1) / world_Position (4);
world_Position (2) := world_Position (2) / world_Position (4);
world_Position (3) := world_Position (3) / world_Position (4);
return Vector_3 (world_Position (1 .. 3));
end unProject;