vue-cesium
Version:
Vue 3.x components for CesiumJS.
1 lines • 6.16 kB
Source Map (JSON)
{"version":3,"file":"Viewshed.mjs","sources":["../../../../../packages/shared/shaders/Viewshed.ts"],"sourcesContent":["/*\n * @Author: zouyaoji@https://github.com/zouyaoji\n * @Date: 2022-04-29 17:43:24\n * @LastEditTime: 2023-03-09 16:36:44\n * @LastEditors: zouyaoji 370681295@qq.com\n * @Description:\n * @FilePath: \\vue-cesium@next\\packages\\shared\\shaders\\Viewshed.ts\n */\nexport default `\n uniform sampler2D colorTexture;\n uniform vec4 u_color1;\n uniform vec4 u_color2;\n uniform float u_isShed;\n uniform sampler2D shadowMap_depthTexture;\n uniform mat4 shadowMap_matrix;\n uniform vec4 shadowMap_lightPositionEC;\n uniform vec3 shadowMap_lightDirectionEC;\n uniform float u_radius;\n uniform vec4 shadowMap_normalOffsetScaleDistanceMaxDistanceAndDarkness;\n uniform vec4 shadowMap_texelSizeDepthBiasAndNormalShadingSmooth;\n uniform float czzj;\n uniform float dis;\n uniform float spzj;\n uniform float mixNum;\n uniform vec3 shadowMap_lightUp;\n uniform vec3 shadowMap_lightDir;\n uniform vec3 shadowMap_lightRight;\n in vec2 v_textureCoordinates;\n vec4 toEye(in vec2 uv, in float depth){\n vec2 xy = vec2((uv.x * 2.0 - 1.0),(uv.y * 2.0 - 1.0));\n vec4 posInCamera = czm_inverseProjection * vec4(xy, depth, 1.0);\n posInCamera =posInCamera / posInCamera.w;\n return posInCamera;\n }\n float getDepth(in vec4 depth){\n float z_window = czm_unpackDepth(depth);\n z_window = czm_reverseLogDepth(z_window);\n float n_range = czm_depthRange.near;\n float f_range = czm_depthRange.far;\n return (2.0 * z_window - n_range - f_range) / (f_range - n_range);\n }\n float _czm_sampleShadowMap(sampler2D shadowMap, vec2 uv){\n return texture(shadowMap, uv).r;\n }\n float _czm_shadowDepthCompare(sampler2D shadowMap, vec2 uv, float depth){\n return step(depth, _czm_sampleShadowMap(shadowMap, uv));\n }\n float _czm_shadowVisibility(sampler2D shadowMap, czm_shadowParameters shadowParameters){\n float depthBias = shadowParameters.depthBias;\n float depth = shadowParameters.depth;\n float nDotL = shadowParameters.nDotL;\n float normalShadingSmooth = shadowParameters.normalShadingSmooth;\n float darkness = shadowParameters.darkness;\n vec2 uv = shadowParameters.texCoords;\n depth -= depthBias;\n vec2 texelStepSize = shadowParameters.texelStepSize;\n float radius = 1.0;\n float dx0 = -texelStepSize.x * radius;\n float dy0 = -texelStepSize.y * radius;\n float dx1 = texelStepSize.x * radius;\n float dy1 = texelStepSize.y * radius;\n float visibility =\n (\n _czm_shadowDepthCompare(shadowMap, uv, depth)\n +_czm_shadowDepthCompare(shadowMap, uv + vec2(dx0, dy0), depth) +\n _czm_shadowDepthCompare(shadowMap, uv + vec2(0.0, dy0), depth) +\n _czm_shadowDepthCompare(shadowMap, uv + vec2(dx1, dy0), depth) +\n _czm_shadowDepthCompare(shadowMap, uv + vec2(dx0, 0.0), depth) +\n _czm_shadowDepthCompare(shadowMap, uv + vec2(dx1, 0.0), depth) +\n _czm_shadowDepthCompare(shadowMap, uv + vec2(dx0, dy1), depth) +\n _czm_shadowDepthCompare(shadowMap, uv + vec2(0.0, dy1), depth) +\n _czm_shadowDepthCompare(shadowMap, uv + vec2(dx1, dy1), depth)\n ) * (1.0 / 9.0)\n ;\n return visibility;\n }\n vec3 pointProjectOnPlane(in vec3 planeNormal, in vec3 planeOrigin, in vec3 point){\n vec3 v01 = point -planeOrigin;\n float d = dot(planeNormal, v01) ;\n return (point - planeNormal * d);\n }\n float ptm(vec3 pt){\n return sqrt(pt.x*pt.x + pt.y*pt.y + pt.z*pt.z);\n }\n void main()\n {\n const float PI = 3.141592653589793;\n vec4 color = texture(colorTexture, v_textureCoordinates);\n out_FragColor = color;\n if ( u_isShed < 0.5 )\n return;\n vec4 currD = texture(czm_globeDepthTexture, v_textureCoordinates);\n if( currD.r >= 1.0 )\n return;\n\n float depth = getDepth(currD);\n vec4 positionEC = toEye(v_textureCoordinates, depth);\n vec3 normalEC = vec3(1.0);\n czm_shadowParameters shadowParameters;\n shadowParameters.texelStepSize = shadowMap_texelSizeDepthBiasAndNormalShadingSmooth.xy;\n shadowParameters.depthBias = shadowMap_texelSizeDepthBiasAndNormalShadingSmooth.z;\n shadowParameters.normalShadingSmooth = shadowMap_texelSizeDepthBiasAndNormalShadingSmooth.w;\n shadowParameters.darkness = shadowMap_normalOffsetScaleDistanceMaxDistanceAndDarkness.w;\n shadowParameters.depthBias *= max(depth * 0.01, 1.0);\n vec3 directionEC = normalize(positionEC.xyz - shadowMap_lightPositionEC.xyz);\n float nDotL = clamp(dot(normalEC, -directionEC), 0.0, 1.0);\n vec4 shadowPosition = shadowMap_matrix * positionEC;\n shadowPosition /= shadowPosition.w;\n if (any(lessThan(shadowPosition.xyz, vec3(0.0))) || any(greaterThan(shadowPosition.xyz, vec3(1.0))))\n return;\n\n vec4 lw = czm_inverseView* vec4(shadowMap_lightPositionEC.xyz, 1.0);\n vec4 vw = czm_inverseView* vec4(positionEC.xyz, 1.0);\n if(distance(lw.xyz,vw.xyz)> u_radius)\n return;\n\n shadowParameters.texCoords = shadowPosition.xy;\n shadowParameters.depth = shadowPosition.z;\n shadowParameters.nDotL = nDotL;\n float visibility = _czm_shadowVisibility(shadowMap_depthTexture, shadowParameters);\n if(visibility > 0.3 ){\n out_FragColor = mix(color,vec4(u_color1.rgb, 1.0),mixNum);\n }\n else{\n if(abs(shadowPosition.z-0.0)<0.01){\n return;\n }\n out_FragColor = mix(color,vec4(u_color2.rgb, 1.0),mixNum);\n }\n }\n`\n"],"names":[],"mappings":";AAQA,qBAAe,CAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,CAAA;;;;"}