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| Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
| particles [2019/03/08 11:46] – [Mouse interaction] admin | particles [2020/11/06 13:51] – [Physics Particle Support] admin | ||
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| ====== Using the ParticleSystem ====== | ====== Using the ParticleSystem ====== | ||
| + | |||
| + | {{:: | ||
| Gorilla3D provides an integrated particle system for rendering complex and individual particle effects. | Gorilla3D provides an integrated particle system for rendering complex and individual particle effects. | ||
| Line 7: | Line 9: | ||
| Gorilla3D already supplies some of the most popular effects, like: fire, smoke, rain, snow, waterfall, eruption, explosion. | Gorilla3D already supplies some of the most popular effects, like: fire, smoke, rain, snow, waterfall, eruption, explosion. | ||
| + | {{:: | ||
| It is possible to manipulate each particle by the so-called influencers. | It is possible to manipulate each particle by the so-called influencers. | ||
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| * Endless or limited emmittance | * Endless or limited emmittance | ||
| * Physically based particle collision detection with other scene objects (not with particles!) | * Physically based particle collision detection with other scene objects (not with particles!) | ||
| + | * Autosorting of particles depending on assigned camera | ||
| + | ===== Shader / Material ===== | ||
| + | |||
| + | The particle emitter expects a pointsprite compatible material source to be applied. | ||
| + | Gorilla3D therefor provides the **TGorillaParticleMaterialSource** as default material. | ||
| + | It supports rendering a single texture, texture-atlas (for animated particles) and colored particles on pointsprite basis. | ||
| + | |||
| + | Have a look at [[materials|Materials]] | ||
| + | |||
| + | Of course you can write your own shader if those features do not suit your needs. | ||
| + | |||
| + | ===== Shader Attributes ===== | ||
| + | |||
| + | To allow extended particle functionality Gorilla3D changes the default values of some vertex attributes, because at the moment it is not possible to declare our own vertex attributes. | ||
| + | |||
| + | In the following table we show the attribute settings for each particle, when using a TGorillaParticleEmitter: | ||
| + | |||
| + | ^ Vertex-Attribute ^ Value ^ | ||
| + | | a_Position | position | | ||
| + | | a_Normal | velocity | | ||
| + | | a_Color0 | current color| | ||
| + | | a_TexCoord0 | current texture or texture atlas offset | | ||
| + | | a_Binormal | X = size, Y = angle, Z = weight | | ||
| + | | a_Tangent | X = age, Y = life time, Z = delta time | | ||
| + | ===== Physics Particle Support ===== | ||
| + | |||
| + | {{:: | ||
| ===== Example ===== | ===== Example ===== | ||
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| begin | begin | ||
| LParticles := TGorillaFireParticleEmitter.Create(FGorilla); | LParticles := TGorillaFireParticleEmitter.Create(FGorilla); | ||
| - | LParticles .Camera := FCamera; | + | |
| + | | ||
| // a fire effect contains multiple parts: a front and back flame and smoke | // a fire effect contains multiple parts: a front and back flame and smoke | ||
| Line 58: | Line 89: | ||
| begin | begin | ||
| LParticles := TGorillaSmokeParticleEmitter.Create(FGorilla); | LParticles := TGorillaSmokeParticleEmitter.Create(FGorilla); | ||
| + | LParticles.Parent := FGorilla; | ||
| LParticles.Camera := FCamera; | LParticles.Camera := FCamera; | ||
| Line 87: | Line 119: | ||
| begin | begin | ||
| LParticles := TGorillaEruptionParticleEmitter.Create(FGorilla); | LParticles := TGorillaEruptionParticleEmitter.Create(FGorilla); | ||
| + | LParticles.Parent := FGorilla; | ||
| LParticles.Camera := FCamera; | LParticles.Camera := FCamera; | ||
| Line 109: | Line 142: | ||
| begin | begin | ||
| LParticles := TGorillaRainParticleEmitter.Create(FGorilla); | LParticles := TGorillaRainParticleEmitter.Create(FGorilla); | ||
| + | LParticles.Parent := FGorilla; | ||
| LParticles.Camera := FCamera; | LParticles.Camera := FCamera; | ||
| end; | end; | ||
| Line 126: | Line 160: | ||
| begin | begin | ||
| LParticles := TGorillaSnowParticleEmitter.Create(FGorilla); | LParticles := TGorillaSnowParticleEmitter.Create(FGorilla); | ||
| + | LParticles.Parent := FGorilla; | ||
| LParticles.Camera := FCamera; | LParticles.Camera := FCamera; | ||
| end; | end; | ||
| Line 247: | Line 282: | ||
| end; | end; | ||
| </ | </ | ||
| + | |||
| + | |||
| + | Next step: [[physics|Physics]] | ||