[SOLVED] Missing ShapePtr methods

[TheLorizz]

Hello guys I want to point out that ShapePtr is missing a getter/setter for the rotation!

There's the setPosition(Math::Vec3) but no setRotation() or getRotation()

[silent]

TheLorizz

There is no rotation setters or getters due to the precision issue, which is critical for physics.

You can use setTransform to set the full transform matrix at once.

[TheLorizz]

5 hours ago, silent said:

TheLorizz

There is no rotation setters or getters due to the precision issue, which is critical for physics.

You can use setTransform to set the full transform matrix at once.

I tried using a code like:

Mat4 transform = Mat4(translate(0.8f, 1.25f, 0.15f) * rotate(0.0f, 90.0f, 0.0f))
myCollision->setTransform(transform);

But it looks like it's not translating/rotating, when I get home I'll try recoding that part

[silent]

There is no method rotate() that will take 3 floats as input.

Instead you can use rotate(quat(0.0f, 90.0f, 0.0f)) or rotateY(90.0f).

Thanks!

[TheLorizz]

Ok so, what I did first is to create the shape in the editor first and check if it works, it does, those are the settings.

Then I recreated it from code, because it should be something made dynamically, this is the code:

ShapeCylinderPtr wheel_rf_col = ShapeCylinder::create();
wheel_rf_col->setRadius(0.30668f);
wheel_rf_col->setHeight(0.19606f);
wheel_rf_col->setPosition(Vec3(0.72f, 1.25f, 0.15f));
//Mat4 transMatrix = (Mat4)translate(Vec3(0.72f, 1.25f, 0.15f));
Mat4 rotMatrix = (Mat4)rotateY(90.0f);
Mat4 transform = rotMatrix * wheel_rf_col->getTransform();
wheel_rf_col->setTransform(transform);
mesh->getBodyRigid()->addShape(wheel_rf_col); // This is the base vehicle mesh

But when I compile and run, this happens! As you can see, the vehicle dances

Whenever I change radius and height, this happens, it seems it doesn't move nor rotate!

Edited August 7, 2020 by TheLorizz

[silent]

Can you send us whole test scene (data and source directories should be enough)? Right now it's hard to tell what is going on.

Thanks!

[TheLorizz]

6 hours ago, silent said:

Can you send us whole test scene (data and source directories should be enough)? Right now it's hard to tell what is going on.

Thanks!

I've sent a direct message with the link, thanks for helping!

Edited August 8, 2020 by TheLorizz

[alexander]

Hi TheLorizz,

Instead of this:

mesh->getBodyRigid()->addShape(wheel_rf_col);

Use this:

mesh->getBodyRigid()->addShape(wheel_rf_col, translate(0.72f, 1.25f, 0.15f) * rotateY(90.0f));

Because addShape() has signature: (const Ptr<Shape> &shape, const Math::mat4 &transform = mat4_identity);
When you call the addShape() function without "transform" argument you reset shape's transform to zero.
 

Best regards,
Alexander

[TheLorizz]

On 8/10/2020 at 1:51 PM, alexander said:

Hi TheLorizz,

Instead of this:

mesh->getBodyRigid()->addShape(wheel_rf_col);

Use this:

mesh->getBodyRigid()->addShape(wheel_rf_col, translate(0.72f, 1.25f, 0.15f) * rotateY(90.0f));

Because addShape() has signature: (const Ptr<Shape> &shape, const Math::mat4 &transform = mat4_identity);
When you call the addShape() function without "transform" argument you reset shape's transform to zero.
 

Best regards,
Alexander

Thanks, it works! Didn't see that transform reference