fire-ring-effect-modifier.cpp
3.67 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
/*
* Copyright (c) 2023 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include "fire-ring-effect-modifier.h"
#include "fire-ring-effect-source.h"
namespace Dali::ParticleEffect
{
FireModifier::FireModifier(ParticleEmitter& emitter)
: mEmitter(emitter)
{
// initialize gradient with flame colors
mFireGradient.PushColor(Vector4(1.0f, 1.0f, 1.0f, 1.0f), 1.0f - 1.0f);
mFireGradient.PushColor(Vector4(0.975, 0.955, 0.476, 1.0f), 1.0f - 0.947f);
mFireGradient.PushColor(Vector4(0.999, 0.550, 0.194, 1.0f), 1.0f - 0.800f);
mFireGradient.PushColor(Vector4(0.861, 0.277, 0.094, 1.0f), 1.0f - 0.670f);
mFireGradient.PushColor(Vector4(0.367, 0.0, 0.0, 1.0f), 1.0f - 0.456f);
mFireGradient.PushColor(Vector4(0.3, 0.3, 0.3, 1.0f), 1.0f - 0.400f);
mFireGradient.PushColor(Vector4(0.3, 0.2, 0.2, 1.0f), 1.0f - 0.200f);
mFireGradient.PushColor(Vector4(0.2, 0.1, 0.1, 1.0f), 1.0f - 0.150f);
mFireGradient.PushColor(Vector4(0.1, 0.0, 0.0, 1.0f), 1.0f- 0.100f);
mFireGradient.PushColor(Vector4(0.0, 0.0, 0.0, 0.5f), 1.0f-0.050f);
mFireGradient.PushColor(Vector4(0.0, 0.0, 0.0, 0.2f), 1.0f);
}
bool FireModifier::IsMultiThreaded()
{
return false;
}
void FireModifier::Update(ParticleList& particleList, uint32_t first, uint32_t count)
{
// If no acive particles return
if(!particleList.GetActiveParticleCount())
{
return;
}
mAngle = ((mAngle + 2) % 360);
// Retrieve the Source and get the stream
if(!mStreamBasePos)
{
auto handle = mEmitter.GetHandle();
if(!handle)
{
return;
}
mStreamBasePos = static_cast<FireSource*>(&handle.GetSource().GetSourceCallback())->mStreamBasePos;
}
// Missing stream, return!
if(!mStreamBasePos)
{
return;
}
auto& activeParticles = particleList.GetActiveParticles();
auto it = activeParticles.begin();
std::advance(it, first);
int i = 0;
for(; count; ++it, count--)
{
i += 1;
// Acquire stream data
auto& particle = *it;
auto& position = particle.Get<Vector3>(ParticleStream::POSITION_STREAM_BIT);
auto& velocity = particle.Get<Vector3>(ParticleStream::VELOCITY_STREAM_BIT);
auto& color = particle.Get<Vector4>(ParticleStream::COLOR_STREAM_BIT);
auto& baseLifetime = particle.Get<float>(ParticleStream::LIFETIME_BASE_STREAM_BIT);
auto& scale = particle.Get<Vector3>(ParticleStream::SCALE_STREAM_BIT);
// Get base positions
auto& basePos = particle.GetByIndex<Vector3>(mStreamBasePos);
float lifetime = particle.Get<float>(ParticleStream::LIFETIME_STREAM_BIT);
position.y += -fabs(velocity.y);
position.x = basePos.x + 5.0f * sin((((mAngle + i)%360)*M_PI)/180.f );
velocity *= 0.990f;
auto newColor = mFireGradient.GetColorAt((baseLifetime - lifetime) / baseLifetime);
float normalizedTime = (lifetime / baseLifetime);
newColor.a = normalizedTime * normalizedTime;
scale = Vector3(64.0f*(normalizedTime * normalizedTime * normalizedTime * normalizedTime), 64.0f*(normalizedTime * normalizedTime * normalizedTime * normalizedTime), 1.0);
color = newColor;
}
}
}