cesium/Source/Shaders/ShadowVolumeAppearanceVS.js

CesiumJS is a JavaScript library for creating 3D globes and 2D maps in a web browser without a plugin.

//This file is automatically rebuilt by the Cesium build process.
define(function() {
    'use strict';
    return "attribute vec3 position3DHigh;\n\
attribute vec3 position3DLow;\n\
attribute float batchId;\n\
\n\
#ifdef EXTRUDED_GEOMETRY\n\
attribute vec3 extrudeDirection;\n\
\n\
uniform float u_globeMinimumAltitude;\n\
#endif // EXTRUDED_GEOMETRY\n\
\n\
#ifdef PER_INSTANCE_COLOR\n\
varying vec4 v_color;\n\
#endif // PER_INSTANCE_COLOR\n\
\n\
#ifdef TEXTURE_COORDINATES\n\
#ifdef SPHERICAL\n\
varying vec4 v_sphericalExtents;\n\
#else // SPHERICAL\n\
varying vec2 v_inversePlaneExtents;\n\
varying vec4 v_westPlane;\n\
varying vec4 v_southPlane;\n\
#endif // SPHERICAL\n\
varying vec2 v_uvMin;\n\
varying vec3 v_uMaxAndInverseDistance;\n\
varying vec3 v_vMaxAndInverseDistance;\n\
#endif // TEXTURE_COORDINATES\n\
\n\
void main()\n\
{\n\
    vec4 position = czm_computePosition();\n\
\n\
#ifdef EXTRUDED_GEOMETRY\n\
    float delta = min(u_globeMinimumAltitude, czm_geometricToleranceOverMeter * length(position.xyz));\n\
    delta *= czm_sceneMode == czm_sceneMode3D ? 1.0 : 0.0;\n\
\n\
    //extrudeDirection is zero for the top layer\n\
    position = position + vec4(extrudeDirection * delta, 0.0);\n\
#endif\n\
\n\
#ifdef TEXTURE_COORDINATES\n\
#ifdef SPHERICAL\n\
    v_sphericalExtents = czm_batchTable_sphericalExtents(batchId);\n\
#else // SPHERICAL\n\
#ifdef COLUMBUS_VIEW_2D\n\
    vec4 planes2D_high = czm_batchTable_planes2D_HIGH(batchId);\n\
    vec4 planes2D_low = czm_batchTable_planes2D_LOW(batchId);\n\
    vec3 southWestCorner = (czm_modelViewRelativeToEye * czm_translateRelativeToEye(vec3(0.0, planes2D_high.xy), vec3(0.0, planes2D_low.xy))).xyz;\n\
    vec3 northWestCorner = (czm_modelViewRelativeToEye * czm_translateRelativeToEye(vec3(0.0, planes2D_high.x, planes2D_high.z), vec3(0.0, planes2D_low.x, planes2D_low.z))).xyz;\n\
    vec3 southEastCorner = (czm_modelViewRelativeToEye * czm_translateRelativeToEye(vec3(0.0, planes2D_high.w, planes2D_high.y), vec3(0.0, planes2D_low.w, planes2D_low.y))).xyz;\n\
#else // COLUMBUS_VIEW_2D\n\
    // 3D case has smaller \"plane extents,\" so planes encoded as a 64 bit position and 2 vec3s for distances/direction\n\
    vec3 southWestCorner = (czm_modelViewRelativeToEye * czm_translateRelativeToEye(czm_batchTable_southWest_HIGH(batchId), czm_batchTable_southWest_LOW(batchId))).xyz;\n\
    vec3 northWestCorner = czm_normal * czm_batchTable_northward(batchId) + southWestCorner;\n\
    vec3 southEastCorner = czm_normal * czm_batchTable_eastward(batchId) + southWestCorner;\n\
#endif // COLUMBUS_VIEW_2D\n\
\n\
    vec3 eastWard = southEastCorner - southWestCorner;\n\
    float eastExtent = length(eastWard);\n\
    eastWard /= eastExtent;\n\
\n\
    vec3 northWard = northWestCorner - southWestCorner;\n\
    float northExtent = length(northWard);\n\
    northWard /= northExtent;\n\
\n\
    v_westPlane = vec4(eastWard, -dot(eastWard, southWestCorner));\n\
    v_southPlane = vec4(northWard, -dot(northWard, southWestCorner));\n\
    v_inversePlaneExtents = vec2(1.0 / eastExtent, 1.0 / northExtent);\n\
#endif // SPHERICAL\n\
    vec4 uvMinAndExtents = czm_batchTable_uvMinAndExtents(batchId);\n\
    vec4 uMaxVmax = czm_batchTable_uMaxVmax(batchId);\n\
\n\
    v_uMaxAndInverseDistance = vec3(uMaxVmax.xy, uvMinAndExtents.z);\n\
    v_vMaxAndInverseDistance = vec3(uMaxVmax.zw, uvMinAndExtents.w);\n\
    v_uvMin = uvMinAndExtents.xy;\n\
#endif // TEXTURE_COORDINATES\n\
\n\
#ifdef PER_INSTANCE_COLOR\n\
    v_color = czm_batchTable_color(batchId);\n\
#endif\n\
\n\
    gl_Position = czm_depthClampFarPlane(czm_modelViewProjectionRelativeToEye * position);\n\
}\n\
";
});