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main_volumetric.js
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import * as glext from "./GLExt/GLExt.js"
import * as sys from "./System/sys.js"
import * as vMath from "./glMatrix/gl-matrix.js"
import * as sim from "./GLExt/fluidsim.js"
var gl = null;
var bUseHDR = false;
var bStoreHDRinRGBA8 = true;
var bAutoQualitySelect = false;
var QualitySelect = 1;
var strQualitySelect = ["Quality_Low", "Quality_Med", "Quality_High"];
var gFluidSim = null;
var b3DFluidSim = true;
var bFluidSimPass = true;
export function main(){
var gs = sys.storage.CGlobalStorage.getSingleton();
sys.mouse.InitMouse(document);
sys.keyboard.InitKeyboard(document);
sys.CheckWhatBrowser();
gl = glext.glInit("glcanvas");
if(gl == null) return;
if(gl.isWGL2 == false && glext.glEnableExtension('OES_texture_float') == false) alert("no extension: OES_texture_float");
if(gl.isWGL2 == false && glext.glEnableExtension('EXT_shader_texture_lod') == false) alert("no extension: EXT_shader_texture_lod");
if(glext.glEnableExtension('EXT_color_buffer_float') == false) alert("no extension: EXT_color_buffer_float");
if(glext.glEnableExtension('OES_texture_float_linear') == false) alert("no extension: OES_texture_float_linear");
// if(gl.isWGL2 == false && glext.glEnableExtension('WEBGL_draw_buffers') == false) alert("no extension: WEBGL_draw_buffers");
glext.InitDebugTextDOM("debug_text");
var debug_kvadrat = document.getElementById("debug_kvadrat");
sys.mouse.mouse.MouseControls = 0;
sys.mouse.mouse.MouseControlsNone = 0;
sys.mouse.mouse.MouseControlsView = 1;
sys.mouse.mouse.MouseControlsSphere = 2;
sys.mouse.mouse.MouseControlsLight = 3;
sys.mouse.mouse.IsFreeToTakeControl = function(who_asks){
if(this.MouseControls == this.MouseControlsNone || this.MouseControls == who_asks) return true;
return false;}
sys.mouse.mouse.SetMouseControl = function(to_who){
if(this.IsFreeToTakeControl(to_who) == false) return false;
this.MouseControls = to_who; return true;}
sys.mouse.mouse.ClearControl = function(who){
if(this.IsFreeToTakeControl(who) == false) return false;
this.MouseControls = this.MouseControlsNone; return true; }
sys.mouse.mouse.ForceClear = function(){ this.MouseControls = this.MouseControlsNone; }
gl.canvasObject.bIsMouseOver = false;
gl.canvasObject.bIsMouseDown = false;
gl.canvasObject.onmouseover = function(){
// if(sys.mouse.get().SetMouseControl(sys.mouse.get().MouseControlsView) == false) return;
this.bIsMouseOver = true;
}
gl.canvasObject.onmouseout = function(){
// sys.mouse.get().ClearControl(sys.mouse.get().MouseControlsView);
this.bIsMouseOver = false;
}
gl.canvasObject.onmousedown = function(){
if(sys.mouse.get().SetMouseControl(sys.mouse.get().MouseControlsView) == false) return;
this.bIsMouseDown = true;
}
gl.canvasObject.onmouseup = function(){
if( this.bIsMouseDown == true && sys.mouse.get().btnLeft == true ) return;
sys.mouse.get().ClearControl(sys.mouse.get().MouseControlsView);
this.bIsMouseDown = false;
}
// gl.canvasObject.addEventListener("mouseenter", function(){ this.bIsMouseOver = true; });
// gl.canvasObject.addEventListener("mouseleave", function(){ this.bIsMouseOver = false; });
gl.clearColor(0.0, 1.0, 1.0, 1.0);
gl.blendColor(1.0, 1.0, 1.0, 1.0);
gl.enable(gl.DEPTH_TEST);
gl.clearDepth(1.0);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
gl.disable(gl.CULL_FACE);
gl.frontFace(gl.CCW);
gl.viewport(0, 0, gl.viewportWidth, gl.viewportHeight);
gl.disable(gl.BLEND);
gl.depthFunc(gl.LESS);
glext.CBlendMode.Init();
if(bUseHDR == true && bStoreHDRinRGBA8 == true)
glext.CShaderDefines.addGlobalDefine("USE_HDR_RGBA8","");
else if(bUseHDR == true)
glext.CShaderDefines.addGlobalDefine("USE_HDR","");
glext.CShaderDefines.addGlobalDefine("MAX_LIGHTS", " "+glext.MAX_LIGHTS);
var simple_shader = new glext.CShader(0);
if(simple_shader.CompileFromFile("simpleVS", "simpleFS") == false) alert("nije kompajliran shader!");
simple_shader.setVertexAttribLocations("aVertexPosition","aVertexNormal","aVertexTangent",null,"aTexCoords");
simple_shader.setTransformMatricesUniformLocation("ModelMatrix","ViewMatrix","ProjectionMatrix");
simple_shader.setDefaultTextureUniformLocations("txDiffuse","txNormal","txAoRS");
// simple_shader.setBRDFLUTTextureUniformLocation("txBRDF");
simple_shader.setFlagsUniformLocation("uFlags");
simple_shader.setTimeUniformLocation("Time");
simple_shader.setCameraPositionUniformLocation("CameraPosition");
simple_shader.ULTextureAmb = simple_shader.getUniformLocation("txAmbient");
var skybox_shader = new glext.CShader(1);
if(skybox_shader.CompileFromFile("simpleVS", "deferred_skybox") == false) alert("nije kompajliran shader!");
skybox_shader.ULTextureAmb = skybox_shader.getUniformLocation("txAmbient");
skybox_shader.InitDefaultUniformLocations();
skybox_shader.InitDefaultAttribLocations();
var deferred_opaque_shader = new glext.CShader(2);
if(deferred_opaque_shader.CompileFromFile("simpleVS", "deferred_opaque_shader") == false) alert("nije kompajliran shader!");
deferred_opaque_shader.InitDefaultAttribLocations();
deferred_opaque_shader.InitDefaultUniformLocations();
deferred_opaque_shader.ULInvViewProjMatrix = deferred_opaque_shader.getUniformLocation("InverseViewProjectionMatrix");
var transparent_shader = new glext.CShader(3);
if(transparent_shader.CompileFromFile("simpleVS", "transparent_shader") == false) alert("nije kompajliran shader!");
transparent_shader.InitDefaultAttribLocations();
transparent_shader.InitDefaultUniformLocations();
transparent_shader.ULTextureAmb = transparent_shader.getUniformLocation("txAmbient");
transparent_shader.ULTextureBackground = transparent_shader.getUniformLocation("txBackground");
var backbuffer_shader = new glext.CShader(4);
if(backbuffer_shader.CompileFromFile("simpleVS", "backbuffer_shader") == false) alert("nije kompajliran shader!");
backbuffer_shader.InitDefaultAttribLocations();
backbuffer_shader.InitDefaultUniformLocations();
var atmosphere_shader = new glext.CShader(5);
if(atmosphere_shader.CompileFromFile("simpleVS", "atmosphere_shader") == false) alert("nije kompajliran shader!");
atmosphere_shader.InitDefaultAttribLocations();
atmosphere_shader.InitDefaultUniformLocations();
var volume_clouds_shader = new glext.CShader(6);
volume_clouds_shader.addDefine(strQualitySelect[QualitySelect],"");//"Quality_Low"
if(volume_clouds_shader.CompileFromFile("volume_clouds_vs", "volume_clouds_shader") == false) alert("nije kompajliran shader!");
volume_clouds_shader.InitDefaultAttribLocations();
volume_clouds_shader.InitDefaultUniformLocations();
volume_clouds_shader.ULTextureNoiseRGB = volume_clouds_shader.getUniformLocation("txNoiseRGB");
volume_clouds_shader.ULTextureBackground = volume_clouds_shader.getUniformLocation("txBackground");
volume_clouds_shader.ULTextureBackgroundDepth = volume_clouds_shader.getUniformLocation("txDepth");
// volume_clouds_shader.ULInverseViewMatrix = volume_clouds_shader.getUniformLocation("InverseViewMatrix");
volume_clouds_shader.ULCameraForward = volume_clouds_shader.getUniformLocation("CameraForward");
volume_clouds_shader.ULCameraRight = volume_clouds_shader.getUniformLocation("CameraRight");
volume_clouds_shader.ULCameraUp = volume_clouds_shader.getUniformLocation("CameraUp");
volume_clouds_shader.ULMouse = volume_clouds_shader.getUniformLocation("CMouse");
volume_clouds_shader.ULResolution = volume_clouds_shader.getUniformLocation("Resolution");
volume_clouds_shader.ULPixelAspect = volume_clouds_shader.getUniformLocation("PixelAspect");
volume_clouds_shader.ULTextureMass = volume_clouds_shader.getUniformLocation("txFluidSimCloud");
volume_clouds_shader.ULTextureVelocity = volume_clouds_shader.getUniformLocation("txFluidSimVelocity");
volume_clouds_shader.ULTexturePressure = volume_clouds_shader.getUniformLocation("txFluidSimPressure");
volume_clouds_shader.ULTextureDivergence = volume_clouds_shader.getUniformLocation("txFluidSimDivergence");
volume_clouds_shader.ULDisplayBrightness = volume_clouds_shader.getUniformLocation("displayBrightness");
volume_clouds_shader.ULTanHalfFOV = volume_clouds_shader.getUniformLocation("TanHalfFOV");
var sphere_model = new glext.CModel(1);
sphere_model.ImportFrom("SphereModel");
var navigatorModel = new glext.CModel(2);
navigatorModel.ImportFrom("navigatorModel");
var quad_model = new glext.CModel(2);
glext.GenQuadModel(quad_model);
// var txBRDF_LUT = new glext.CTexture(3); txBRDF_LUT.CreateFromFile("txBRDF_LUT");
// txBRDF_LUT.setWrapTypeClampToEdge();
// var txD = new glext.CTexture(0); txD.CreateFromFile("txRock_D");
var txN = new glext.CTexture(1); txN.CreateFromFile("txRock_N");
// var txAoRS = new glext.CTexture(2); txAoRS.CreateFromFile("txRock_AoRS");
// var txGlassAoRS = new glext.CTexture(-1); txGlassAoRS.CreateFromFile("txGlass_AoRS");
// var txGlassN = new glext.CTexture(-1); txGlassN.CreateFromFile("txGlass_N");
// var txAtmosphere = new glext.CTexture(-1); txAtmosphere.CreateFromFile("txAtmosphere");
var txNoiseRGB = new glext.CTexture(-1); txNoiseRGB.CreateFromFile("txNoiseRGB");
txNoiseRGB.setWrapTypeRepeat();
// var txAmb = new glext.CTextureCube(0); txAmb.CreateFromDOMDataElements("tx128");
var light = new glext.CLight(0);
// var lightUniforms = glext.CLight.getUniformLocationsFromShader(shader,"light0");
// var lightUniforms_backbuffer_shader = glext.CLight.getUniformLocationsFromShader(deferred_opaque_shader,"light0");
// atmosphere_shader.lightUniforms = glext.CLight.getUniformLocationsFromShader(atmosphere_shader, "light0");
// light.AttachUniformBlockTo(shader);
light.setPosition(1.0, 0.0, 2.5);
var projectionMatrix = vMath.mat4.create();
var viewMatrix = vMath.mat4.create();
var orbital = [];
orbital.radius = 3.0;
orbital.inclination = 0.0;
orbital.azimuth = 0.0;
orbital.dinclination = 0.0;
orbital.dazimuth = 0.0;
var startViewDir = [0.5,0.0,0.25];
vMath.vec3.normalize(startViewDir, startViewDir);
vMath.vec3.scale(startViewDir, startViewDir, orbital.radius);
var eyePt = vMath.vec3.fromValues(startViewDir[0],startViewDir[1],startViewDir[2]);
var centerPt = vMath.vec3.fromValues(0.0,0.0,0.0);
var upDir = vMath.vec3.fromValues(0.0,0.0,-1.0);
var CCamera = new glext.CCamera(0, gl.viewportWidth, gl.viewportHeight);
CCamera.setPositionAndDir(eyePt, [1.0,0.0,0.0], upDir);
CCamera.UpdateProjectionMatrix();
//framebuffer
//------------------------------------------------------------------------
var fbo_width = gl.viewportWidth; var fbo_height = gl.viewportHeight;
var txfbColor = new glext.CTexture(4); txfbColor.CreateEmptyRGBAubyte(fbo_width, fbo_height);
var txfbDepth = new glext.CTexture(5); txfbDepth.CreateEmptyDepthfloat(fbo_width, fbo_height);
var txfbNormal= new glext.CTexture(6); txfbNormal.CreateEmptyRGBAubyte(fbo_width, fbo_height);
var txfbAoRSMt= new glext.CTexture(7); txfbAoRSMt.CreateEmptyRGBAubyte(fbo_width, fbo_height);
var fbo = new glext.CFramebuffer(true); fbo.Create();
var fboHdrMipBlur = new glext.CFramebuffer(true); fboHdrMipBlur.Create(); fboHdrMipBlur.Bind();
var txfbHdrMipBlur = new glext.CTexture(8); txfbHdrMipBlur.CreateEmptyWithMipsRGBAubyte(fbo_width, fbo_height);
glext.CFramebuffer.BindMainFB();
//------------------------------------------------------------------------
glext.CLightList.addLight(light);
// glext.CTextureList.addTexture(txD);
glext.CTextureList.addTexture(txN);
// glext.CTextureList.addTexture(txAoRS);
// glext.CTextureList.addTexture(txGlassN);
// glext.CTextureList.addTexture(txGlassAoRS);
// glext.CTextureList.addTexture(txBRDF_LUT);
// glext.CTextureList.addTexture(txAmb);
glext.CTextureList.addTexture(txfbColor);
glext.CTextureList.addTexture(txfbNormal);
glext.CTextureList.addTexture(txfbAoRSMt);
glext.CTextureList.addTexture(txfbDepth);
glext.CTextureList.addTexture(txfbHdrMipBlur);
// glext.CTextureList.addTexture(txAtmosphere);
glext.CTextureList.addTexture(txNoiseRGB);
glext.CShaderList.addShader(simple_shader);
glext.CShaderList.addShader(skybox_shader);
glext.CShaderList.addShader(deferred_opaque_shader);
glext.CShaderList.addShader(transparent_shader);
glext.CShaderList.addShader(backbuffer_shader);
glext.CShaderList.addShader(atmosphere_shader);
glext.CShaderList.addShader(volume_clouds_shader);
// sphere_model.setTexture(txD,"txDiffuse");
sphere_model.setTexture(txN,"txNormal");
// sphere_model.setTexture(txAoRS,"txAoRS");
// sphere_model.setTexture(txAmb,"txAmbient");
sphere_model.setShader(simple_shader);
// navigatorModel.setTexture(txGlassN,"txNormal");
// navigatorModel.setTexture(txGlassAoRS,"txAoRS");
navigatorModel.setTexture(txfbDepth,"txDepth");
// navigatorModel.setTexture(txBRDF_LUT,"txBRDF");
// navigatorModel.setTexture(txAmb,"txAmbient");
navigatorModel.setTexture(txfbHdrMipBlur,"txBackground");
navigatorModel.setShader(transparent_shader);
quad_model.setTexture(txfbColor,"txDiffuse");
quad_model.setTexture(txfbNormal,"txNormal");
quad_model.setTexture(txfbAoRSMt,"txAoRS");
// quad_model.setTexture(txfbDepth,"txDepth");
// quad_model.setTexture(txBRDF_LUT,"txBRDF");
// quad_model.setTexture(txAmb,"txAmbient");
quad_model.setShader(deferred_opaque_shader);
light.AttachUniformBlockTo(deferred_opaque_shader);
light.AttachUniformBlockTo(transparent_shader);
light.AttachUniformBlockTo(atmosphere_shader);
light.AttachUniformBlockTo(volume_clouds_shader);
light.AttachUniformBlockTo(simple_shader);
txfbHdrMipBlur.setMinMagFilterLinearMipMapLinear();
//------------------------------------------------------------------------
//------------------------------------------------------------------------
//attach textures to fbos
//------------------------------------------------------------------------
fbo.AttachTexture(txfbColor, 0);
fbo.AttachDepth(txfbDepth);
fbo.CheckStatus();
fboHdrMipBlur.AttachTexture(txfbHdrMipBlur, 0);
fboHdrMipBlur.AttachDepth(txfbDepth);
fboHdrMipBlur.CheckStatus();
//------------------------------------------------------------------------
var fluidSim = null;
if(b3DFluidSim == false){
fluidSim = new sim.CFluidSim2D(200,200,
/* vertex, viscosity, advection, advection_correction,
divergence, pressure, divfree_velocity, display */
"fluidsim_quad_surface_shader", "fluidsim_viscosity_shader", "fluidsim_advection_shader", "fluidsim_advection_correction_shader",
"fluidsim_divergence_shader", "fluidsim_pressure_shader", "fluidsim_divfree_velocity_shader", "fluidsim_display_shader"
);
}
else{
fluidSim = new sim.CFluidSim3D(128,128,128,
/* vertex, viscosity, advection, advection_correction,
divergence, pressure, divfree_velocity, display */
"fluidsim_quad_surface_shader", "fluidsim_viscosity_shader", "fluidsim_advection_shader", "fluidsim_advection_correction_shader",
"fluidsim_divergence_shader", "fluidsim_pressure_shader", "fluidsim_divfree_velocity_shader", "fluidsim_display_shader"
);
}
fluidSim.setKinematicViscosity(1.0);
fluidSim.setDisplayType("_DEBUG_Display_Velocity");
fluidSim.ClearBuffers();
gFluidSim = fluidSim;
var fluidsimBrightnessSlider = document.getElementById("fluidsim_brightness_slider");
fluidsimBrightnessSlider.fvalue = function(){
var v = this.value; //1, 100
v = v - 50.0; //-49, 50
v = v / 5.0; //5: -9.8, 10.0 //10: -4.9, 5.0
v = Math.pow(2.0, v); //5: 0.0011, 1024 //10: 0.0335, 32.0
return v;
}
var fluidsimPressureIterationCountSlider = document.getElementById("fluidsim_pressure_iteration_count_slider");
var fluidsimViscositySlider = document.getElementById("fluidsim_viscosity_slider");
fluidsimViscositySlider.fvalue = function(){
var v = this.value; //0, 90
v = v / 30.0; //0.0, 3.0
return v;
}
var fluidsimFramebufferToggleButton = document.getElementById("toggle_fb_fluidsim");
if(fluidsimFramebufferToggleButton != null){
fluidsimFramebufferToggleButton.addEventListener("click", function(){
if(gFluidSim.bUseMultipleFramebuffers)
fluidsimFramebufferToggleButton.innerHTML = "Multiple Framebuffers ON";
else
fluidsimFramebufferToggleButton.innerHTML = "Multiple Framebuffers OFF";
});
fluidsimFramebufferToggleButton.innerHTML = "Multiple Framebuffers ON";
}
var lightIntenitySlider = document.getElementById("light_intensity_slider");
if(lightIntenitySlider != null){
lightIntenitySlider.fvalue = function(){
var v = this.value;
return v / 10.0;
}
}
var barrier = null;
var light_move = null;
if(b3DFluidSim == true)
{
fluidSim.CreateTest3DRenderShader("test_3d_texture_render");
fluidSim.setNoiseTexture(txNoiseRGB);
fluidSim.CreateMass(128,128,128, false, false, "fluidsim_mass_init_shader", "fluidsim_mass_advect_shader", "fluidsim_mass_advect_correction_shader");
//custom barrier
//-----------------------------------------------------------------------------------------------
fluidSim.viscosity_shader.ULSphereBarrier = fluidSim.viscosity_shader.getUniformLocation("sphereBarrier");
fluidSim.viscosity_shader.ULSphereBarrierVelocity = fluidSim.viscosity_shader.getUniformLocation("sphereBarrierVelocity");
fluidSim.pressure_shader.ULSphereBarrier = fluidSim.pressure_shader.getUniformLocation("sphereBarrier");
fluidSim.pressure_shader.ULSphereBarrierVelocity = fluidSim.pressure_shader.getUniformLocation("sphereBarrierVelocity");
fluidSim.SphereBarrier = ["Sphere Barrier"];
fluidSim.SphereBarrier.position = [0.25,0.0,0.5];
fluidSim.SphereBarrier.radius = 0.05;
fluidSim.SphereBarrier.velocity = [0.0,0.0,0.0];
fluidSim.SphereBarrier.ToRealWorldScale = 2.0;
fluidSim.SphereBarrier.gravity_dir = [upDir[0],upDir[1],upDir[2]];
fluidSim.SphereBarrier.up_dir = [-upDir[0],-upDir[1],-upDir[2]];
fluidSim.SphereBarrier.down_dir = [upDir[0],upDir[1],upDir[2]];
fluidSim.SphereBarrier.right_dir = [CCamera.RightDir[0], CCamera.RightDir[1], CCamera.RightDir[2]];
fluidSim.SphereBarrier.left_dir = [-CCamera.RightDir[0], -CCamera.RightDir[1], -CCamera.RightDir[2]];
fluidSim.SphereBarrier.forward_dir = [CCamera.ForwardDir[0], CCamera.ForwardDir[1], CCamera.ForwardDir[2]];
fluidSim.SphereBarrier.back_dir = [-CCamera.ForwardDir[0], -CCamera.ForwardDir[1], -CCamera.ForwardDir[2]];
fluidSim.SphereBarrier.floor_depth = 1.0;
fluidSim.SphereBarrier.ceiling_height = 1.0;
fluidSim.SphereBarrier.walls_dist = 1.0;
fluidSim.SphereBarrier.g = 0.981;
fluidSim.SphereBarrier.restitution = 0.5;
fluidSim.SphereBarrier.velScale = 0.25;
fluidSim.SphereBarrier.mass = 0.25;
fluidSim.SphereBarrier.k_spring = 1.0;
fluidSim.SphereBarrier.max_velocity = 10.0;
fluidSim.SphereBarrier.min_velocity = 0.1;
fluidSim.SphereBarrier.drag = 0.25;
fluidSim.SphereBarrier.goal_position = [0.0,0.0,0.0];
fluidSim.SphereBarrier.goal_position2D = [0.0,0.0];
fluidSim.SphereBarrier.position2D = [0.0,0.0];
fluidSim.SphereBarrier.bUpdateTowadsGoal = false;
fluidSim.SphereBarrier.CCamera = CCamera;
fluidSim.SphereBarrier.getPositionAndRadius = function(){ return [this.position[0]*0.5+0.5, this.position[1]*0.5+0.5, this.position[2]*0.5+0.5, this.radius]; }
fluidSim.SphereBarrier.getVelocity = function(){ return [ this.velScale*this.velocity[0], this.velScale*this.velocity[1], this.velScale*this.velocity[2]]; }
fluidSim.SphereBarrier.getWorldPosition = function(){ return [this.position[0]*this.ToRealWorldScale, this.position[1]*this.ToRealWorldScale, this.position[2]*this.ToRealWorldScale]; }
fluidSim.pre_viscosity_pass_function = function(){
this.viscosity_shader.setFloat4Uniform( this.viscosity_shader.ULSphereBarrier, this.SphereBarrier.getPositionAndRadius() );
this.viscosity_shader.setFloat3Uniform( this.viscosity_shader.ULSphereBarrierVelocity, this.SphereBarrier.getVelocity() );
}
fluidSim.pre_pressure_pass_function = function(){
this.pressure_shader.setFloat4Uniform( this.pressure_shader.ULSphereBarrier, this.SphereBarrier.getPositionAndRadius() );
this.pressure_shader.setFloat3Uniform( this.pressure_shader.ULSphereBarrierVelocity, this.SphereBarrier.getVelocity() );
}
fluidSim.on_recompile_fluidsim_shaders = function(){
this.viscosity_shader.ULSphereBarrier = this.viscosity_shader.getUniformLocation("sphereBarrier");
this.viscosity_shader.ULSphereBarrierVelocity = this.viscosity_shader.getUniformLocation("sphereBarrierVelocity");
this.pressure_shader.ULSphereBarrier = this.pressure_shader.getUniformLocation("sphereBarrier");
this.pressure_shader.ULSphereBarrierVelocity = this.pressure_shader.getUniformLocation("sphereBarrierVelocity");
}
//TransformToScreenCoordinates(): pos je 3D pozicija u fluidSim lokalnom prostoru
fluidSim.SphereBarrier.TransformToScreenCoordinates = function(pos, CCamera){
let pos3D = [0.0,0.0,0.0]; vMath.vec3.copy(pos3D, pos); var pos2D = [0.0,0.0];
vMath.vec3.scale(pos3D, pos, this.ToRealWorldScale);
vMath.vec3.subtract(pos3D, pos3D, CCamera.Position);
pos2D[0] = vMath.vec3.dot(pos3D, CCamera.RightDir);
pos2D[1] = vMath.vec3.dot(pos3D, CCamera.UpDir)*CCamera.PixelAspect;
let dist = vMath.vec3.dot(pos3D, CCamera.ForwardDir);
vMath.vec2.scale(pos2D, pos2D, 1.0/dist);
vMath.vec2.add(pos2D, pos2D, [1.0,1.0]);
vMath.vec2.scale(pos2D, pos2D, 0.5);
vMath.vec2.multiply(pos2D, pos2D, [CCamera.Width, CCamera.Height]);
return pos2D;
}
//TransformFromScreenCoordinates(): pos je 2D pozicija na screenu u screen-space prostoru
fluidSim.SphereBarrier.TransformFromScreenCoordinates = function(pos, CCamera, bNaRavniniKojaSadrziPosition){
let pos2D = [0.0,0.0]; vMath.vec2.copy(pos2D, pos); var pos3D = [0.0,0.0,0.0]; let v2 = [0.0,0.0,0.0];
vMath.vec2.multiply(pos2D, pos2D, [1.0/CCamera.Width, 1.0/CCamera.Height]);
vMath.vec2.scale(pos2D, pos2D, 2.0);
vMath.vec2.subtract(pos2D, pos2D, [1.0,1.0]);
vMath.vec3.scale(pos3D, CCamera.RightDir, pos2D[0]);
vMath.vec3.scale(v2, CCamera.UpDir, pos2D[1]);
vMath.vec3.add(pos3D, pos3D, v2);
vMath.vec3.scale(v2, this.position, this.ToRealWorldScale);
vMath.vec3.subtract(v2, v2, CCamera.Position);
let dist = vMath.vec3.dot(v2, CCamera.ForwardDir); //testirat
vMath.vec3.scale(pos3D, pos3D, dist);
if(bNaRavniniKojaSadrziPosition == true){
vMath.vec3.scale(v2, CCamera.ForwardDir, dist);
vMath.vec3.add(pos3D, pos3D, v2);
}
vMath.vec3.scale(pos3D, pos3D, 1.0/this.ToRealWorldScale);
return pos3D;
}
fluidSim.SphereBarrier.getPositionOnScreen = function(CCamera){
this.position2D = this.TransformToScreenCoordinates(this.position, CCamera);
return this.position2D;
}
fluidSim.SphereBarrier.setGoalPosition2D = function(pos2D, CCamera){
this.goal_position = this.TransformFromScreenCoordinates(pos2D, CCamera, true);
vMath.vec2.copy(this.goal_position2D, pos2D);
}
fluidSim.SphereBarrier.getDistanceToCamera = function(CCamera){
let pos3D = [0.0,0.0,0.0];
vMath.vec3.scale(pos3D, this.position, this.ToRealWorldScale);
vMath.vec3.subtract(pos3D, pos3D, CCamera.Position);
let dist = vMath.vec3.dot(pos3D, CCamera.ForwardDir);
return dist;
}
fluidSim.SphereBarrier.ReflectVector = function(out, vector, normal, restitution){
if(restitution == undefined) restitution = 1.0;
let d = vMath.vec3.dot(vector, normal);
let v2 = [0.0,0.0,0.0];
vMath.vec3.scale(v2, normal, -d);
vMath.vec3.add(out, vector, v2);
vMath.vec3.scale(v2, normal, -d*restitution);
vMath.vec3.add(out, out, v2);
return out;
}
//--------------------------------------------------------------
fluidSim.SphereBarrier.UpdateMovementTowardsGoal = function(dt){
if(this.bUpdateTowadsGoal == false) return;
let n = [0.0,0.0,0.0]; vMath.vec3.subtract(n, this.goal_position, this.position);
let d = vMath.vec3.length(n);
if(d < 0.01){ return; }
vMath.vec3.scale(n, n, 1.0/d);
let F = [0.0,0.0,0.0]; vMath.vec3.scale(F, n, d*this.k_spring);
let a = [0.0,0.0,0.0]; vMath.vec3.scale(a, F, 1.0/this.mass);
let dv = [0.0,0.0,0.0]; vMath.vec3.scale(dv, a, dt);
vMath.vec3.add(this.velocity, this.velocity, dv);
}
fluidSim.SphereBarrier.UpdateMovementTowardsGoal2D = function(dt){
if(this.bUpdateTowadsGoal == false) return;
//koordinate su u Screen space ([0,0] - [CCamera.Width, CCamera.Height])
let n = [0.0,0.0]; vMath.vec2.subtract(n, this.goal_position2D, this.position2D);
let d = vMath.vec2.length(n);
if(d < 0.1){ return; }
vMath.vec2.scale(n, n, 1.0/d);
let F = [0.0,0.0]; vMath.vec2.scale(F, n, d*this.k_spring);
let a = [0.0,0.0]; vMath.vec2.scale(a, F, 1.0/this.mass);
let dv = [0.0,0.0]; vMath.vec2.scale(dv, a, dt);
vMath.vec2.add(dv, dv, [0.5*this.CCamera.Width, 0.5*this.CCamera.Height]);
let dv3D = this.TransformFromScreenCoordinates(dv, this.CCamera, false);
vMath.vec3.add(this.velocity, this.velocity, dv3D);
}
fluidSim.SphereBarrier.UpdateDrag = function(dt){
if(this.bUpdateTowadsGoal == true) return;
//ovo je bezveze funcija koja usporava barrier kuglu.
vMath.vec3.scale(this.velocity, this.velocity, 1.0 - this.drag*dt);
}
fluidSim.SphereBarrier.UpdateGravity = function(dt){
if(this.bUpdateTowadsGoal == true) return;
let dv = [0.0,0.0,0.0];
vMath.vec3.scale(dv, this.gravity_dir, dt*this.g);
vMath.vec3.add(this.velocity, this.velocity, dv);
}
fluidSim.SphereBarrier.BounceOfWalls = function(dt){
let projected_position = [0.0,0.0,0.0];
vMath.vec3.scale(projected_position, this.velocity, dt);
vMath.vec3.add(projected_position, this.position, projected_position);
let h = vMath.vec3.dot(projected_position, this.down_dir);
if(h >= this.floor_depth-1.5*this.radius){
let d = vMath.vec3.length(this.velocity);
if(d > this.min_velocity)
this.ReflectVector(this.velocity, this.velocity, this.down_dir, this.restitution);
else
vMath.vec3.copy(this.velocity, [0,0,0]);
}
h = vMath.vec3.dot(projected_position, this.up_dir);
if(h >= this.ceiling_height-1.5*this.radius){
this.ReflectVector(this.velocity, this.velocity, this.up_dir, this.restitution);
}
h = vMath.vec3.dot(projected_position, this.right_dir);
if(h >= this.walls_dist-1.5*this.radius){
this.ReflectVector(this.velocity, this.velocity, this.right_dir, this.restitution);
}
h = vMath.vec3.dot(projected_position, this.left_dir);
if(h >= this.walls_dist-1.5*this.radius){
this.ReflectVector(this.velocity, this.velocity, this.left_dir, this.restitution);
}
h = vMath.vec3.dot(projected_position, this.forward_dir);
if(h >= this.walls_dist-1.5*this.radius){
this.ReflectVector(this.velocity, this.velocity, this.forward_dir, this.restitution);
}
h = vMath.vec3.dot(projected_position, this.back_dir);
if(h >= this.walls_dist-1.5*this.radius){
this.ReflectVector(this.velocity, this.velocity, this.back_dir, this.restitution);
}
}
fluidSim.SphereBarrier.ClampVelocity = function(max_velocity){
let d = vMath.vec3.length(this.velocity);
if(d > max_velocity){
let n = [0.0,0.0,0.0];
vMath.vec3.scale(n, this.velocity, 1.0/d);
vMath.vec3.scale(this.velocity, n, max_velocity);
}
}
fluidSim.SphereBarrier.UpdatePosition = function(dt){
let dx = [0.0,0.0,0.0]; vMath.vec3.scale(dx, this.velocity, dt);
vMath.vec3.add(this.position, this.position, dx);
}
fluidSim.SphereBarrier.Update = function(dt){
this.UpdateMovementTowardsGoal2D(dt);
this.UpdateGravity(dt);
this.UpdateDrag(dt);
this.BounceOfWalls(dt);
this.ClampVelocity(this.max_velocity);
this.UpdatePosition(dt);
}
//--------------------------------------------------------------
//-----------------------------------------------------------------------------------------------
//div kvadrat koji reprezentira sphere barrier i njeno micanje u 2D planeu
//-----------------------------------------------------------------------------------------------
barrier = document.getElementById("barriermove_kvadrat");
// barrier.bIsMouseOver = false;
barrier.bIsMouseDown = false;
barrier.radius = fluidSim.SphereBarrier.radius * fluidSim.SphereBarrier.ToRealWorldScale;
barrier.baseWindowOffset = [gl.canvasObject.offsetLeft, gl.canvasObject.offsetTop];
barrier.baseSize = 2560.0 * fluidSim.SphereBarrier.radius;
barrier.mouse = sys.mouse;
barrier.bUpdateTowadsGoal = false;
barrier.goal_position2D = [0.0,0.0];
barrier.position2D = [0.0,0.0];
barrier.setScreenPosition = function(pos){
this.style.position = "absolute";
this.style.left =(pos[0] + this.baseWindowOffset[0] - 0.5*this.offsetWidth) + "px";
this.style.top = (pos[1] + this.baseWindowOffset[1] - 0.5*this.offsetHeight) + "px";
// vMath.vec2.subtract(this.delta_position, pos, this.position2D);
vMath.vec2.copy(this.position2D, pos);
}
barrier.setPositionAndSize = function(pos, size){
this.style.width = size + "px";
this.style.height = size + "px";
this.setScreenPosition(pos);
}
barrier.onmousedown = function(){
if(sys.mouse.get().SetMouseControl(sys.mouse.get().MouseControlsSphere) == false) return;
this.bIsMouseDown = true;
}
barrier.onmouseup = function(){
if( this.bIsMouseDown == true && sys.mouse.get().btnLeft == true ) return;
sys.mouse.get().ClearControl(sys.mouse.get().MouseControlsSphere);
this.bIsMouseDown = false;
}
barrier.UpdateGoalPosition = function(mouse, CCamera, bCameraUpdated, fluidSim){
if(bCameraUpdated == false && this.bIsMouseDown == true){
vMath.vec2.copy(this.goal_position2D, mouse.getPosition());
this.bUpdateTowadsGoal = true;
}
else{
this.bUpdateTowadsGoal = false;
}
fluidSim.SphereBarrier.bUpdateTowadsGoal = this.bUpdateTowadsGoal;
fluidSim.SphereBarrier.setGoalPosition2D(this.goal_position2D, CCamera);
}
barrier.Update = function(dt, mouse, CCamera, bCameraUpdated, fluidSim){
if(this.bIsMouseDown == true && mouse.get().btnLeft == false){ this.bIsMouseDown = false; }
this.UpdateGoalPosition(mouse, CCamera, bCameraUpdated, fluidSim);
}
//-----------------------------------------------------------------------------------------------
//div kvadrat koji upravlja pozicijom svjetla
//-----------------------------------------------------------------------------------------------
light_move = document.getElementById("lightmove_kvadrat");
// light_move.bIsMouseOver = false;
light_move.bIsMouseDown = false;
light_move.baseWindowOffset = [gl.canvasObject.offsetLeft, gl.canvasObject.offsetTop];
light_move.baseSize = 16;
light_move.position = [0.0,0.0,0.0];
light_move.position2D = [0.0,0.0];
light_move.setScreenPosition = function(pos){
this.style.position = "absolute";
this.style.left =(pos[0] + this.baseWindowOffset[0] - 0.5*this.offsetWidth) + "px";
this.style.top = (pos[1] + this.baseWindowOffset[1] - 0.5*this.offsetHeight) + "px";
vMath.vec2.copy(this.position2D, pos);
}
light_move.setPositionAndSize = function(pos, size){
this.style.width = size + "px";
this.style.height = size + "px";
this.setScreenPosition(pos);
}
light_move.onmousedown = function(){
if(sys.mouse.get().SetMouseControl(sys.mouse.get().MouseControlsLight) == false) return;
this.bIsMouseDown = true;
}
light_move.onmouseup = function(){
if( this.bIsMouseDown == true && sys.mouse.get().btnLeft == true ) return;
sys.mouse.get().ClearControl(sys.mouse.get().MouseControlsLight);
this.bIsMouseDown = false;
}
light_move.mouse = sys.mouse;
vMath.vec3.copy(light_move.position, light.Position)
//TransformToScreenCoordinates(): pos je 3D pozicija u fluidSim lokalnom prostoru
light_move.TransformToScreenCoordinates = function(pos, CCamera){
let pos3D = [0.0,0.0,0.0]; vMath.vec3.copy(pos3D, pos); var pos2D = [0.0,0.0];
vMath.vec3.subtract(pos3D, pos3D, CCamera.Position);
pos2D[0] = vMath.vec3.dot(pos3D, CCamera.RightDir);
pos2D[1] = vMath.vec3.dot(pos3D, CCamera.UpDir)*CCamera.PixelAspect;
let dist = vMath.vec3.dot(pos3D, CCamera.ForwardDir);
vMath.vec2.scale(pos2D, pos2D, 1.0/dist);
vMath.vec2.add(pos2D, pos2D, [1.0,1.0]);
vMath.vec2.scale(pos2D, pos2D, 0.5);
vMath.vec2.multiply(pos2D, pos2D, [CCamera.Width, CCamera.Height]);
return pos2D;
}
//TransformFromScreenCoordinates(): pos je 2D pozicija na screenu u screen-space prostoru
light_move.TransformFromScreenCoordinates = function(pos, CCamera, bNaRavniniKojaSadrziPosition){
let pos2D = [0.0,0.0]; var pos3D = [0.0,0.0,0.0]; let v2 = [0.0,0.0,0.0];
vMath.vec2.multiply(pos2D, pos, [1.0/CCamera.Width, 1.0/CCamera.Height]);
vMath.vec2.scale(pos2D, pos2D, 2.0);
vMath.vec2.subtract(pos2D, pos2D, [1.0,1.0]);
vMath.vec3.scale(pos3D, CCamera.RightDir, pos2D[0]);
vMath.vec3.scale(v2, CCamera.UpDir, pos2D[1]);
vMath.vec3.add(pos3D, pos3D, v2);
vMath.vec3.copy(v2, this.position);
vMath.vec3.subtract(v2, v2, CCamera.Position);
let dist = vMath.vec3.dot(v2, CCamera.ForwardDir); //testirat
vMath.vec3.scale(pos3D, pos3D, dist);
if(bNaRavniniKojaSadrziPosition == true){
vMath.vec3.scale(v2, CCamera.ForwardDir, dist);
vMath.vec3.add(pos3D, pos3D, v2);
vMath.vec3.add(pos3D, pos3D, CCamera.Position);
}
return pos3D;
}
light_move.MoveScreenAligned = function(delta, CCamera){
let deltaPos = [0,0];
vMath.vec2.add(deltaPos, delta, [0.5*CCamera.Width, 0.5*CCamera.Height]);
let delta3D = this.TransformFromScreenCoordinates(deltaPos, CCamera, false);
vMath.vec3.add(this.position, this.position, delta3D);
}
light_move.Update = function(light, mouse, CCamera, bCameraUpdated){
if(this.bIsMouseDown == true && mouse.get().btnLeft == false){ this.bIsMouseDown = false; }
if(this.bIsMouseDown == true)
{
var mousePos = mouse.getPosition();
this.position = this.TransformFromScreenCoordinates(mousePos, CCamera, true);
// var mouseDelta = mouse.getDeltaPosition();
// this.MoveScreenAligned(mouseDelta, CCamera);
if(light != null){
light.setPosition(this.position[0], this.position[1], this.position[2]);
this.setPositionAndSize(mousePos, this.baseSize);
}
}
else{
var pos2D = this.TransformToScreenCoordinates(this.position, CCamera);
this.setPositionAndSize(pos2D, this.baseSize);
}
}
//-----------------------------------------------------------------------------------------------
}
vMath.mat4.perspective(projectionMatrix, vMath.deg2rad(40.0), gl.viewportWidth/gl.viewportHeight, 0.1, 1000.0);
vMath.mat4.lookAt(viewMatrix, eyePt, centerPt, upDir);
// vMath.mat4.identity(viewMatrix);
// vMath.mat4.translate(viewMatrix, viewMatrix, [0.0, 0.0, -7.0]);
vMath.mat4.identity(sphere_model.Transform);
// vMath.mat4.scale(sphere_model.Transform, sphere_model.Transform, [4.0,4.0,4.0]);
vMath.mat4.rotate(sphere_model.Transform, sphere_model.Transform, vMath.deg2rad(-90.0), [1,0,0]);
var time = 0.0;
sys.time.init();
var oldframe_time = -1.0;
var avg_frame_time = 1.0/60.0;
var FPSlabel = document.getElementById("label_FPS");
/* var FPSSlider = document.getElementById("fps_slider");
FPSSlider.fvalue = function(){
var v = this.value; //0, 10
v = v - 4.0; //-4, 6
v = Math.pow(2.0, v); //0.0625, 64.0
return v;
} */
var lastRecompileTime = sys.time.getSecondsSinceStart();
simple_shader.setFlagsUniform(1);
var IdentityMatrix = vMath.mat4.create();
vMath.mat4.identity(IdentityMatrix);
/*
var MipGen = new glext.CMipMapGen();
if((bUseHDR == false) || (bUseHDR == true && bStoreHDRinRGBA8 == true))
MipGen.Create(gl.viewportWidth, gl.viewportHeight, gl.RGBA8, "mipmapVS", "3x3MipGenFS");
else
MipGen.Create(gl.viewportWidth, gl.viewportHeight, gl.RGBA16F, "mipmapVS", "3x3MipGenFS");
*/
// var Flags = 1;
// var time_of_start = sys.time.getTimeµs();
glext.CBlendMode.Enable();
// var circularMov = [0.0, 0.0]; //azimuth, inclination
// var distFromObject = 7.0;
var RightAdd = vMath.vec3.create();
var UpAdd = vMath.vec3.create();
var FOV = 75.0;
CCamera.setPositionAndLookPt(eyePt, [0.0,0.0,0.0], upDir);
CCamera.setFOV(FOV);
var bCtrlToggle = false;
var bShiftToggle = false;
var delay_ms = 34;
/*
let testv3D_1 = [0.0,0.0,0.0];
let testv2D_1 = [250.0,250.0];
while(true){
testv3D_1 = fluidSim.SphereBarrier.TransformFromScreenCoordinates(testv2D_1, CCamera);
testv2D_1 = fluidSim.SphereBarrier.TransformToScreenCoordinates(testv3D_1, CCamera);
}*/
function renderFrame()
{
time = sys.time.getSecondsSinceStart();
let frame_time = time - oldframe_time;
let avg_FPS = 1.0 / avg_frame_time;
if(oldframe_time > 0.0 && frame_time > 1.0 / 70.0){
avg_frame_time = vMath.lerp(avg_frame_time, frame_time, 1.0 / 30.0);
avg_FPS = 1.0 / avg_frame_time;
if(bAutoQualitySelect == true && (time - lastRecompileTime) > 5.0)
{
if(avg_FPS < 20.0 && QualitySelect > 0){
volume_clouds_shader.RemoveDefine(strQualitySelect[QualitySelect]);
QualitySelect--;
volume_clouds_shader.addDefine(strQualitySelect[QualitySelect],"");
recompileShader("volume_clouds_shader");
lastRecompileTime = sys.time.getSecondsSinceStart();
}
else if(avg_FPS > 40.0 && QualitySelect < 2){
volume_clouds_shader.RemoveDefine(strQualitySelect[QualitySelect]);
QualitySelect++;
volume_clouds_shader.addDefine(strQualitySelect[QualitySelect],"");
recompileShader("volume_clouds_shader");
lastRecompileTime = sys.time.getSecondsSinceStart();
}
}
}
// FPSlabel.textContent = (1.0/avg_frame_time).toString();
FPSlabel.textContent = Number.parseFloat(avg_FPS).toFixed(2) + " FPS";
let ctime = Math.cos(time);
let stime = Math.sin(time);
let ctime10 = Math.cos(10*time);
// if(checkWindowsSizeAndResizeCanvas() == true){
// CCamera.setViewportWidthHeight(gl.viewportWidth,gl.viewportHeight);}
// glext.CFramebuffer.BindMainFB();
//Calc camera view i proj
//-------------------------------------------------------------------------------------
let bUpdateCamera = false;
let mousePos = sys.mouse.getPosition();
let mouseDelta = sys.mouse.getDeltaPosition();
let SphereBarrierPositionOffset = [0.0,0.0,0.0];
if(gl.canvasObject.bIsMouseOver == true)
{
orbital.dinclination = 0.0;
orbital.dazimuth = 0.0;
if(sys.mouse.get().btnLeft == true && barrier.bIsMouseDown == false &&
gl.canvasObject.bIsMouseDown == true && light_move.bIsMouseDown == false)
{
if(mouseDelta[0] != 0 || mouseDelta[1] != 0)
{
orbital.dazimuth = -mouseDelta[0];
orbital.dinclination = mouseDelta[1];
bUpdateCamera = true;
}
}
if(sys.mouse.get().dz != 0)
{
orbital.radius = orbital.radius - orbital.radius*(sys.mouse.get().dz / 20.0);
if(orbital.radius < 0.1) orbital.radius = 0.1;
if(orbital.radius > 100.0) orbital.radius = 100.0;
bUpdateCamera = true;
}
if(bUpdateCamera == true)
{
// eyePt = vMath.sph2cart3D(orbital.azimuth, orbital.inclination, orbital.radius);
let sinA = Math.sin(vMath.deg2rad(orbital.dazimuth)); var sinI = Math.sin(vMath.deg2rad(orbital.dinclination));
vMath.vec3.scale(RightAdd, CCamera.RightDir, orbital.radius * sinA);
vMath.vec3.scale(UpAdd, CCamera.UpDir, orbital.radius * sinI);
vMath.vec3.add(eyePt, eyePt, RightAdd);
vMath.vec3.add(eyePt, eyePt, UpAdd);
vMath.vec3.normalize(eyePt, eyePt);
vMath.vec3.scale(eyePt, eyePt, orbital.radius);
CCamera.setPositionAndLookPt(eyePt, [0.0,0.0,0.0], upDir);
CCamera.CalcInverseViewProjectionMatrix();
vMath.vec3.copy(upDir, CCamera.UpDir);
}
/* else
{
let deltaX = [0.0,0.0,0.0];
let deltaY = [0.0,0.0,0.0];
vMath.vec3.copy(deltaX, CCamera.RightDir);
vMath.vec3.copy(deltaY, CCamera.UpDir);
if(orbital.radius < 0.1) orbital.radius = 0.1;
vMath.vec3.scale(deltaX, deltaX, (mouseDelta[0]/orbital.radius) );
vMath.vec3.scale(deltaY, deltaY, mouseDelta[1]/orbital.radius);
vMath.vec3.add(SphereBarrierPositionOffset, SphereBarrierPositionOffset, deltaX);
vMath.vec3.add(SphereBarrierPositionOffset, SphereBarrierPositionOffset, deltaY);
} */
}
/*
{
if(sys.mouse.get().btnLeft == true)
if(sys.mouse.get().dx != 0 || sys.mouse.get().dy != 0){
CCamera.Rotate(sys.mouse.get().dx / 100.0, sys.mouse.get().dy / 100.0);
CCamera.CalcInverseViewProjectionMatrix();
}
var MovementDelta = .01;
if(sys.keyboard.isCtrlPressed()) bCtrlToggle = !bCtrlToggle;
if(sys.keyboard.isShiftPressed()) bShiftToggle = !bShiftToggle;
if(bCtrlToggle == true) MovementDelta *= 0.1;
else if(bShiftToggle == true) MovementDelta *= 10.0;
if(sys.keyboard.isKeyPressed("w")) CCamera.MoveForward(MovementDelta);
else if(sys.keyboard.isKeyPressed("s")) CCamera.MoveForward(-MovementDelta);
if(sys.keyboard.isKeyPressed("a")) CCamera.MoveRight(MovementDelta);
else if(sys.keyboard.isKeyPressed("d")) CCamera.MoveRight(-MovementDelta);
if(sys.keyboard.isKeyPressed("r")) CCamera.MoveUp(MovementDelta);
else if(sys.keyboard.isKeyPressed("f")) CCamera.MoveUp(-MovementDelta);
if(sys.keyboard.isKeyPressed("e")) CCamera.Tilt(0.1*MovementDelta);
else if(sys.keyboard.isKeyPressed("q")) CCamera.Tilt(-0.1*MovementDelta);
CCamera.CalcInverseViewMatrix();
}
*/
//-------------------------------------------------------------------------------------
{
let dt = avg_frame_time; if(dt > 0.1) dt = 0.1;
//slideri
//-------------------------------------------------------
let c = fluidsimPressureIterationCountSlider.value;
fluidsimPressureIterationCountSlider.title = "pressure iteration count: " + c.toString();
fluidSim.setPressureIterationNumber(c);
let viscosity = fluidsimViscositySlider.fvalue(); //Number.parseFloat(avg_FPS).toFixed(2)
fluidsimViscositySlider.title = "viscosity: " + Number.parseFloat(viscosity).toFixed(5);
fluidSim.setKinematicViscosity(viscosity);
let brightness = fluidsimBrightnessSlider.fvalue();
fluidsimBrightnessSlider.title = "brightness: " + Number.parseFloat(brightness).toFixed(4);