[SOLVED] ObjectWaterGlobal::getHeight() issue in coords far from origin

[javier.serrano]

Hi.

We have made a 3000x3000km terrain and now we are placing some buoys by geo coordinates. When we included the script in samples/worlds/expression_01.h to the buoys, the ones that are far from world origin do not get the water height properly. This can be easily reproduced in expression_01 by moving WorldExpression node to (200000.0, 200000.0, 0.0) point.

We also tried Object::getIntersection() and World::getIntersection() with similar behaviour. We are using 2.9.0.2 SDK version. Any tips for getting the water height?

Thanks, Javier

[silent]

Hi Javier,

I've successfully reproduced this behavior. It looks like CPU and GPU implementation are not synchronized entirely. Right now we don't have any workaround for this behavior, sorry.

We will send you a patch as soon as it will be ready (hope it would not take a lot of time).

[javier.serrano]

Hi Silent, we will wait for the patch. Right now we will set low beauforts to minimize visual impact.

Thanks

[silent]

We suggest to modify the code in <SDK>/source/engine/objects/ObjectWaterGlobal.cpp:476.

Before:

const Vec2 position_xy = Vec2(geo_pos.x, geo_pos.y);

After:

Vec2 position_xy = Vec2(geo_pos.x, geo_pos.y);

position_xy.x = mod(position_xy.x, octaves_periodic_position.x);
position_xy.y = mod(position_xy.y, octaves_periodic_position.y);

Could you please try this approach?

Thanks!