Change Details

{F10155107}**System Information** Operating system: not relevant Graphics card: not relevant **Blender Version** 3.0.0 **Short description of error** One is able to map the size of a particle based on it's lifetime using a texture, but sizes (as well as other attributes) are not affected if the particles are keyed with relations. To re-iterate, the steps below as described work with Newtonian physics, but not keyed. **Exact steps for others to reproduce the error** Create a mesh to act as an emitter Select your emitter and go to Properties > Particles, click New. In Properties > Particles > Render, click Object and choose the object that will be emitted as particles and its size. Duplicate the object and under Particles > Physics > Physics Type, select Keyed In Particles > Physics > Relations, create two relations and set the two objects you have in your scene as new particle targets Go to your 3D view and press alt A to launch a preview of your emission animation, then stop it somewhere in its course. In Properties > Particles > Textures, add New and give it a name. In Properties > Textures > Type, choose Blend. In Properties > Textures > Colors, click Ramp. In Properties > Textures > Mapping > Coordinate > choose Strand/Particles. In Properties > Textures > Influences, unclick Time and enable Size. In Properties > Textures > Colors, adjust the Ramp controller to increase or decrease the size of your emitted object over time. Keyed Physics {F10152583} No Physics {F10152584}

{F10155107} **System Information** Operating system: not relevant Graphics card: not relevant **Blender Version** 3.0.0 **Short description of error** One is able to map the size of a particle based on it's lifetime using a texture, but sizes (as well as other attributes) are not affected if the particles are keyed with relations. To re-iterate, the steps below as described work with Newtonian physics, but not keyed. **Exact steps for others to reproduce the error** Create a mesh to act as an emitter Select your emitter and go to Properties > Particles, click New. In Properties > Particles > Render, click Object and choose the object that will be emitted as particles and its size. Duplicate the object and under Particles > Physics > Physics Type, select Keyed In Particles > Physics > Relations, create two relations and set the two objects you have in your scene as new particle targets Go to your 3D view and press alt A to launch a preview of your emission animation, then stop it somewhere in its course. In Properties > Particles > Textures, add New and give it a name. In Properties > Textures > Type, choose Blend. In Properties > Textures > Colors, click Ramp. In Properties > Textures > Mapping > Coordinate > choose Strand/Particles. In Properties > Textures > Influences, unclick Time and enable Size. In Properties > Textures > Colors, adjust the Ramp controller to increase or decrease the size of your emitted object over time. Keyed Physics {F10152583} No Physics {F10152584}

{F10155107} **System Information** Operating system: not relevant Graphics card: not relevant **Blender Version** 3.0.0 **Short description of error** One is able to map the size of a particle based on it's lifetime using a texture, but sizes (as well as other attributes) are not affected if the particles are keyed with relations. To re-iterate, the steps below as described work with Newtonian physics, but not keyed. **Exact steps for others to reproduce the error** Create a mesh to act as an emitter Select your emitter and go to Properties > Particles, click New. In Properties > Particles > Render, click Object and choose the object that will be emitted as particles and its size. Duplicate the object and under Particles > Physics > Physics Type, select Keyed In Particles > Physics > Relations, create two relations and set the two objects you have in your scene as new particle targets Go to your 3D view and press alt A to launch a preview of your emission animation, then stop it somewhere in its course. In Properties > Particles > Textures, add New and give it a name. In Properties > Textures > Type, choose Blend. In Properties > Textures > Colors, click Ramp. In Properties > Textures > Mapping > Coordinate > choose Strand/Particles. In Properties > Textures > Influences, unclick Time and enable Size. In Properties > Textures > Colors, adjust the Ramp controller to increase or decrease the size of your emitted object over time. Keyed Physics {F10152583} No Physics {F10152584}