Lab 9 introduces you to particle goal. In this chapter, we will address the following questions: What is Particle Goal? What we can do with Particle Goal? Create Integrated with Particle Goal, practical situations, create a virtual experiments.
Author: Khieu Van Bang Email: tribang.nd@gmail.com Maya Dynamics Basics Lab 9: Particle Goal CONTENTS Overview Particle Goal : What is Particle Goal ? What we can with Particle Goal ? Integrated with Particle Goal : Create Integrated with Particle Goal Practical situations Exercise: Create a virtual experiments Particle Goal 1) OVERVIEW PARTICLE GOAL PARTICLE GOAL 1.1) Goal ? Working with Particle Goal ( A goal is an object that particles follow or move towards You can use goals to give trailing particles a flowing motion that’s hard to generate with other animation techniques The trailing particles move as if connected to the goal by invisible springs In the context of goals, soft bodies are considered particles ) PARTICLE GOAL 1.2) What is Particle Goal ? Particle objects are useful as goal objects because of the many techniques available for animating particle motion You can’t add a goal to individual particles of the particle object, but you can control how influential each particle is on the trailing object If the goal is a particle object, its particles attract the particles of the trailing object one for one as the animation plays If particles in the objects not die, the trailing particles follow goal particles based on the creation order If particles in either object die, the preceding scheme no longer applies You can no longer visually predict which trailing particle will follow a particular goal particle If the trailing particle object has more particles than the goal object and particles don’t die in either object, the extra particles follow the first-created particles of the goal For instance, suppose you create a goal object with two particles and a trailing object with four particles The four particles would move toward the two particles like this: PARTICLE GOAL 1.3) What is Multiple goals ? You can use more than one goal object to affect a particle object For each goal object, the trailing particle object has a goal weight that sets the relative weighting of the attraction If the goal weights are the same, each goal object attracts the trailing object with equal strength The trailing object moves to a position between the two goal objects, typically oscillating back and forth before coming to equilibrium If the goal weights differ, each goal object attracts the trailing object with different strength The trailing object comes to rest at a position closer to the goal with the higher goal weight PARTICLE GOAL 1.4) What we can with Particle Goal? Cars Insect swarm Virtual experiments Waterfall Fantasy effect PARTICLE GOAL 1.5) Create a Particle Goal Step 1: o Select the particle object you want to be affected by the goal o To select a soft body rather than a conventional particle object, you can select the soft body’s original geometry or its child particle object Step 2: Shift-select the object you want to become the goal Step 3: Select Particles > Goal Step 4: To adjust the goal’s influence, see Edit goal attributes Step 5: Play the animation to see the particles move towards the goal PARTICLE GOAL 1.5) Create a Particle Goal Goal Weight: o The goal weight sets how much all particles of the trailing object are attracted to the goal o You can set goal weight to a value between and A value of means that the goal’s position has no effect on the trailing particles A value of moves the trailing particles to the goal object position immediately Use Transform as Goal: o Makes particles follow the object’s transform rather than its particles, CVs, vertices, or lattice points Particle Goal 2) INTEGRATED WITH PARTICLE GOAL INTEGRATED WITH PARTICLE GOAL Practical situations o nParticle, Goal, Expression, Fields, Instanter Goal Fields Bee Bee Bee Bee n Bee n Bee nParticle + Instanter PRACTICAL SITUATIONS 2.1) Simulation Basic Object Modeling Object Create animation Export file PRACTICAL SITUATIONS 2.2) Create a Particle System Create Plan Create emitter PRACTICAL SITUATIONS 2.3) Creating Particle Goal Select Object and Particle then Click Dynamics > Particles > Goal PRACTICAL SITUATIONS 2.4) Edit attributes Add attributes Write code in Expression PRACTICAL SITUATIONS 2.4) Edit attributes Edit Goal PRACTICAL SITUATIONS 2.4) Edit attributes Edit Expression PRACTICAL SITUATIONS 2.5) Adding Fields PRACTICAL SITUATIONS 2.6) Particle Instancer PRACTICAL SITUATIONS 2.6) Particle Instancer PRACTICAL SITUATIONS 2.6) Particle Instancer Particle Goal 2) EXAMPLES EXERCISE Create a virtual experiments Molecular run when power off Molecular run when power on EXERCISE How to ? Step 1: Modeling Objects Step 2: Create four Emitter(Na+; Cl-; H+, O- ); Step 3: Create Particle Gold Step 4: Create Particle Instancer Molecular run when power off Molecular run when power on Thanks! ... power on EXERCISE How to ? Step 1: Modeling Objects Step 2: Create four Emitter(Na+; Cl-; H+, O- ); Step 3: Create Particle Gold Step 4: Create Particle Instancer Molecular run when power... than the goal object and particles don’t die in either object, the extra particles follow the first-created particles of the goal For instance, suppose you create a goal object with two particles... object, you can select the soft body’s original geometry or its child particle object Step 2: Shift-select the object you want to become the goal Step 3: Select Particles > Goal Step 4: To adjust