![]() ![]() ![]() ![]() NOAA Fisheries, the North Pacific Fishery Management Council, and the Alaska Department of Fish and Game manage the red king crab fishery.Large red king crabs have few predators except right after molting.Smaller crabs are eaten by a variety of groundfish, octopi, sea otters, and crabs, including other red king crabs.Larger crabs eat a much wider range of items including worms, clams, mussels, barnacles, crabs, fish, sea stars, sand dollars, and brittle stars.Smaller crabs eat algae, small worms, small clams, and other small animals.Red king crabs eat almost anything they can find and crush with their claws.After molting they are soft and vulnerable to predators until their new shell hardens.Red king crabs can only grow by molting (shedding their old shell and growing a new one).The larvae feed on phytoplankton and zooplankton for 2 to 3 months before metamorphosing into tiny crabs and settling on the ocean bottom.Larvae hatch from eggs looking like tiny shrimp.Female red king crabs reproduce once a year and release between 50,000 and 500,000 eggs.Males grow faster and larger than females. Red king crabs can grow to be very large, up to 24 pounds with a leg span of 5 feet.The Western Aleutian Islands stock is not subject to overfishing based on 2022 catch data, but data are insufficient to determine population status at this time (2017 stock assessment). Summary stock assessment information can be found on Stock SMART. The Norton Sound stock is not overfished (2023 stock assessment) and not subject to overfishing based on 2022 catch data. Summary stock assessment information can be found on Stock SMART. The Pribilof Islands stock is not overfished (2022 stock assessment) and not subject to overfishing based on 2022 catch data. Summary stock assessment information can be found on Stock SMART. The Bristol Bay stock is not overfished (2022 stock assessment) and not subject to overfishing based on 2022 catch data. Summary stock assessment information can be found on Stock SMART. I haven't personally written quaternion camera code (yet!) but I'm sure the internet contains many examples and longer explanations you can work from.There are four stocks of red king crab: Bristol Bay, Pribilof Islands, Norton Sound, and Western Aleutian Islands. According to the most recent stock assessments: It is very common for general purpose game engines to use quaternions for describing objects' rotations. ![]() Quaternions are used somewhat like rotation matrices, but have fewer components you'll multiply quaternions by quaternions to apply player input, and convert quaternions to matrices to render with. Instead, you should represent your camera/player orientation as a quaternion, a mathematical structure that is good for representing arbitrary rotations. However, this approach (“Euler angles”) is both tricky to compute with and has numerical stability issues (“gimbal lock”). The minimal solution to this is to add a roll component to your camera state. As a consequence, no matter how you implement the controls, you will find that in some orientations the camera rolls strangely, because the effect of trying to do the math with this information is that every frame the roll is picked/reconstructed based on the pitch and yaw. Two numbers can represent a look-direction vector but they cannot represent the third component of camera orientation, called roll (rotation about the “depth” axis of the screen). The problem is that two numbers, pitch and yaw, provide insufficient degrees of freedom to represent consistent free rotation behavior in space without any “horizon”. ![]()
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