{
    "QEP": {
        "QQEM": "0.43",
        "connections": [
            {
                "fromId": 0,
                "toId": 2
            },
            {
                "fromId": 2,
                "toId": 1
            }
        ],
        "exportDirectory": ".",
        "exportFlags": 11,
        "exportName": "WallEffect1",
        "nodes": [
            {
                "fragmentCode": [
                    "void main() {",
                    "    @nodes",
                    "    fragColor = fragColor * qt_Opacity;",
                    "}"
                ],
                "name": "Main",
                "nodeId": 0,
                "type": 0,
                "vertexCode": [
                    "void main() {",
                    "    texCoord = qt_MultiTexCoord0;",
                    "    fragCoord = qt_Vertex.xy;",
                    "    vec2 vertCoord = qt_Vertex.xy;",
                    "    @nodes",
                    "    gl_Position = qt_Matrix * vec4(vertCoord, 0.0, 1.0);",
                    "}"
                ],
                "x": 140,
                "y": 35.25
            },
            {
                "name": "Output",
                "nodeId": 1,
                "type": 1,
                "x": 140,
                "y": 589.75
            },
            {
                "description": "Draws animated sky by rendering tiled clouds texture with a perspective",
                "fragmentCode": [
                    "@main",
                    "{",
                    "    vec4 texclouds = texture(cloudsTexture, fract(tc));",
                    "    texclouds.r = smoothstep(thresholds.s,  thresholds.t, texclouds.r) * cloudsBrightness;",
                    "    texclouds = mix(cloudsSkyColor, cloudsColor, texclouds.r);",
                    "    texclouds = mix(cloudsHorizonColor, texclouds, glowFactor);",
                    "",
                    "    fragColor = texclouds;",
                    "}"
                ],
                "name": "Clouds",
                "nodeId": 2,
                "properties": [
                    {
                        "defaultValue": "clouds.png",
                        "description": "Repeating couds texture. The default image is 512x512 pixels and created using the GIMP tool by the following steps:\n1. Filters -> Render -> Noise -> Difference Clouds\n2. Filters -> Map -> Tile Seamless\n\nThe effect only uses the r channel of the texture.",
                        "name": "cloudsTexture",
                        "type": "image",
                        "value": "fog.png"
                    },
                    {
                        "defaultValue": "0.8",
                        "description": "This property defines the perspective for the clouds which makes the horizon appear further away. ",
                        "maxValue": "1",
                        "minValue": "0",
                        "name": "cloudsPerspective",
                        "type": "float",
                        "value": "0.8"
                    },
                    {
                        "defaultValue": "1",
                        "description": "Amount of texture scale horizontally.",
                        "maxValue": "3",
                        "minValue": "0",
                        "name": "cloudsXScale",
                        "type": "float",
                        "value": "0.8"
                    },
                    {
                        "defaultValue": "1",
                        "description": "Amount of texture scale vertically.",
                        "maxValue": "3",
                        "minValue": "0",
                        "name": "cloudsYScale",
                        "type": "float",
                        "value": "1"
                    },
                    {
                        "defaultValue": "1, 0.4, 0.2, 1",
                        "description": "Color fading used in clouds horizon.",
                        "name": "cloudsHorizonColor",
                        "type": "color",
                        "value": "1, 0.414, 0, 1"
                    },
                    {
                        "defaultValue": "0.5",
                        "description": "The size of cloud horizon glow.",
                        "maxValue": "1",
                        "minValue": "0",
                        "name": "cloudsHorizonGlowSize",
                        "type": "float",
                        "value": "0.637534"
                    },
                    {
                        "defaultValue": "1, 1, 1, 1",
                        "description": "The color for clouds.",
                        "name": "cloudsColor",
                        "type": "color",
                        "value": "1, 1, 1, 1"
                    },
                    {
                        "defaultValue": "0.2, 0.4, 0.8, 1",
                        "description": "The base color of sky behind the clouds.",
                        "name": "cloudsSkyColor",
                        "type": "color",
                        "value": "0.2, 0.4, 0.8, 1"
                    },
                    {
                        "defaultValue": "0.5",
                        "description": "This property adjusts the thickness/amount of the clouds",
                        "maxValue": "1",
                        "minValue": "0",
                        "name": "cloudsThickness",
                        "type": "float",
                        "value": "0.5"
                    },
                    {
                        "defaultValue": "1",
                        "description": "This property adjusts the brightness of the clouds",
                        "maxValue": "3",
                        "minValue": "0",
                        "name": "cloudsBrightness",
                        "type": "float",
                        "value": "1.2"
                    },
                    {
                        "defaultValue": "0.2",
                        "description": "This property defines how sharp or smooth the edges of the clouds are.",
                        "maxValue": "1",
                        "minValue": "0",
                        "name": "cloudsSharpness",
                        "type": "float",
                        "value": "0.2"
                    },
                    {
                        "defaultValue": "0",
                        "description": "This property affects the angle of the movement of the clouds if iTime is animated. This is a helper property that results in correctly calculated cloudsXSpeed and cloudsYSpeed values. The angle is in degrees and 0 is vertically aligned movement from bottom to top.",
                        "maxValue": "360",
                        "minValue": "0",
                        "name": "cloudsMovementAngle",
                        "type": "float",
                        "value": "0"
                    },
                    {
                        "defaultValue": "0.2",
                        "maxValue": "1",
                        "minValue": "0",
                        "name": "cloudsSpeed",
                        "type": "float",
                        "value": "0.05"
                    },
                    {
                        "customValue": "Math.sin(cloudsMovementAngle / 180 * Math.PI) * cloudsSpeed",
                        "defaultValue": "0",
                        "maxValue": "1",
                        "minValue": "0",
                        "name": "cloudsXSpeed",
                        "type": "float",
                        "useCustomValue": true,
                        "value": "0"
                    },
                    {
                        "customValue": "Math.cos(cloudsMovementAngle / 180 * Math.PI) * cloudsSpeed",
                        "defaultValue": "0",
                        "maxValue": "1",
                        "minValue": "0",
                        "name": "cloudsYSpeed",
                        "type": "float",
                        "useCustomValue": true,
                        "value": "0"
                    }
                ],
                "type": 2,
                "vertexCode": [
                    "@mesh 20,20",
                    "",
                    "out float glowFactor;",
                    "out float z;",
                    "out vec2 tc;",
                    "out vec2 thresholds;",
                    "",
                    "@main",
                    "{",
                    "    const float invY = 1. - texCoord.y;",
                    "    z = 1. / (1. - cloudsPerspective + cloudsPerspective * invY);",
                    "",
                    "    tc = texCoord;",
                    "",
                    "    tc.x -= 0.5;",
                    "    tc.x *= z * cloudsXScale;",
                    "    tc.y -= 0.5;",
                    "    tc.y *= z * cloudsYScale;",
                    "",
                    "    tc.x += iTime * cloudsXSpeed;",
                    "    tc.y += iTime * cloudsYSpeed;",
                    "",
                    "    thresholds.s = 1. - cloudsThickness;",
                    "    const float d = (1. - thresholds.s) * (5. - 5 * cloudsSharpness);",
                    "    thresholds.s -= cloudsThickness * d;",
                    "    thresholds.t = thresholds.s + d;",
                    "",
                    "    glowFactor = min(1., invY+ 1. - cloudsHorizonGlowSize);",
                    "}"
                ],
                "x": 105,
                "y": 327.5
            }
        ],
        "version": 1
    }
}