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spread fix

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start and end size merge
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devZoGok
2022-03-25 20:24:36 +02:00
parent 8551823dd8
commit e7b2d56992
4 changed files with 29 additions and 24 deletions
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particle.frag
+9 -1
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@@ -9,12 +9,19 @@ const int numParticles = 1;
layout (location = 0) out vec4 FragColor;
layout (location = 1) out vec4 BrightColor;
uniform sampler2D tex;
struct Texture{
float mixRatio;
sampler2D pastTexture, nextTexture;
bool animated;
};
uniform Texture tex;
uniform float lifePercentage[500];
uniform vec4 startColor, endColor;
void main(){
float alpha = texture(tex.pastTexture, texCoords).r;
if(tex.animated)
alpha = mix(alpha, texture(tex.nextTexture, texCoords).r, tex.mixRatio);
@@ -22,6 +29,7 @@ void main(){
FragColor = c;
float brightness = dot(c.rgb, vec3(0.2126, 0.7152, 0.0722));
if(brightness > 1)
BrightColor = vec4(c.rgb, 1);
}
particle.vert
+2 -3
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@@ -13,15 +13,14 @@ const int numParticles = 1;
uniform mat4 proj, view;
uniform float lifePercentage[numParticles];
uniform vec3 trans[numParticles];
uniform vec2 startSize, endSize;
uniform vec2 size;
void main(){
vec3 camLeft = vec3(view[0][0], view[1][0], view[2][0]);
vec3 camUp = vec3(view[0][1], view[1][1], view[2][1]);
id = gl_InstanceID;
vec2 s = mix(startSize, endSize, lifePercentage[id]);
vec3 v = camLeft * s.x * aPos.x + camUp * s.y * aPos.y;
vec3 v = camLeft * size.x * aPos.x + camUp * size.y * aPos.y;
mat4 model = aInstancedModel;
model[3][0] = trans[id].x;
model[3][1] = trans[id].y;
particleEmitter.cpp
+14 -15
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@@ -102,8 +102,10 @@ namespace vb01{
void ParticleEmitter::makeHeap(int offset){
bool heap = false;
while(!heap){
bool end = true;
for(int i = 0; 2 * i + 1 + offset < numParticles; i++){
if(2 * i + 2 + offset < numParticles && (particles[i + offset]->distToCamPlane < particles[2 * i + 1 + offset]->distToCamPlane ||
particles[i + offset]->distToCamPlane < particles[2 * i + 2 + offset]->distToCamPlane))
@@ -114,6 +116,7 @@ namespace vb01{
else if(2 * i + 2 + offset == numParticles && particles[i + offset]->distToCamPlane < particles[2 * i + 1 + offset]->distToCamPlane)
swap(particles[i + offset], particles[2 * i + 1 + offset]);
}
for(int i = 0; 2 * i + 1 < numParticles; i++){
if(2 * i + 2 + offset < numParticles && (particles[i + offset]->distToCamPlane < particles[2 * i + 1 + offset]->distToCamPlane ||
particles[i + offset]->distToCamPlane < particles[2 * i + 2 + offset]->distToCamPlane))
@@ -123,6 +126,7 @@ namespace vb01{
else if(2 * i + 2 + offset == numParticles && particles[i + offset]->distToCamPlane < particles[2 * i + 1 + offset]->distToCamPlane)
end = false;
}
if(end)
heap = true;
}
@@ -157,8 +161,7 @@ namespace vb01{
shader->setMat4(proj, "proj");
shader->setVec4(startColor, "startColor");
shader->setVec4(endColor, "endColor");
shader->setVec2(startSize, "startSize");
shader->setVec2(endSize, "endSize");
shader->setVec2(size, "size");
heapSort();
render();
@@ -172,24 +175,26 @@ namespace vb01{
Vector3 nodeLeft = node->getGlobalAxis(0);
for(int i = 0; i < numParticles; i++){
Vector3 dir = nodeDir;
if(getTime() - particles[i]->time >= particles[i]->timeToLive){
Vector3 dir = nodeDir;
float factor = (float)(rand() % 100) / 100;
particles[i]->time = getTime();
particles[i]->timeToLive = s64(1000 * ((highLife - lowLife) * factor + lowLife));
float spr1 = float(rand() % (int)spread) / 180 * PI, spr2 = float(rand() % 360) / 180 * PI;
Vector3 ra1 = (nodeUp.cross(dir)).norm(), ra2 = dir.norm();
if(ra1 == Vector3::VEC_ZERO)
ra1 = Vector3::VEC_I;
dir = Quaternion(spr1, ra1) * dir;
dir = Quaternion(spr2, ra2) * dir;
particles[i]->dir = dir.norm() * speed + gravity;
particles[i]->trans = nodePos;
}
dir = dir.norm() * speed + gravity;
particles[i]->trans = particles[i]->trans + dir;
particles[i]->trans = particles[i]->trans + particles[i]->dir;
particles[i]->distToCamPlane = cos(camDir.getAngleBetween((particles[i]->trans - camPos).norm())) * camPos.getDistanceFrom(particles[i]->trans);
float lifePercentage = (float)(getTime() - particles[i]->time) / particles[i]->timeToLive;
@@ -237,17 +242,11 @@ namespace vb01{
case KeyframeChannel::PARTICLE_EMITTER_END_COLOR_Z:
endColor.z = value;
break;
case KeyframeChannel::PARTICLE_EMITTER_START_SIZE_X:
startSize.x = value;
case KeyframeChannel::PARTICLE_EMITTER_SIZE_X:
size.x = value;
break;
case KeyframeChannel::PARTICLE_EMITTER_START_SIZE_Y:
startSize.y = value;
break;
case KeyframeChannel::PARTICLE_EMITTER_END_SIZE_X:
endSize.x = value;
break;
case KeyframeChannel::PARTICLE_EMITTER_END_SIZE_Y:
endSize.y = value;
case KeyframeChannel::PARTICLE_EMITTER_SIZE_Y:
size.y = value;
break;
case KeyframeChannel::PARTICLE_EMITTER_LOW_LIFE:
lowLife = value;
particleEmitter.h
+4 -5
View File
@@ -20,8 +20,7 @@ namespace vb01{
void update();
inline void setMaterial(Material *mat){this->material = mat;}
inline void setNode(Node *node){this->node = node;}
inline void setStartSize(Vector2 size){this->startSize = size;}
inline void setEndSize(Vector2 size){this->endSize = size;}
inline void setSize(Vector2 size){this->size = size;}
inline void setStartColor(Vector4 color){this->startColor = color;}
inline void setEndColor(Vector4 color){this->endColor = color;}
inline void setSpread(float s){this->spread = s;}
@@ -38,7 +37,7 @@ namespace vb01{
struct Particle{
int VAO;
s64 time = 0, timeToLive = 0;
Vector3 trans;
Vector3 trans, dir;
float distToCamPlane;
};
@@ -56,9 +55,9 @@ namespace vb01{
Particle **particles;
Material *material = nullptr;
Node *node = nullptr;
Vector2 startSize = Vector2::VEC_IJ, endSize = Vector2::VEC_IJ;
Vector2 size = Vector2::VEC_IJ;
Vector3 gravity = Vector3::VEC_ZERO;
Vector4 startColor, endColor;
Vector4 startColor = Vector4::VEC_IJKL, endColor = Vector4::VEC_IJKL;
float speed = .2, spread = 1, lowLife = 1, highLife = 2;
friend class ParticleEmitterTest;