{"version":3,"file":"vendors-d56b1406.b149463909b5e91f4e75.bundle.js","mappings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sources":["webpack://app/./node_modules/ol/reproj.js"],"sourcesContent":["/**\n * @module ol/reproj\n */\nimport { IMAGE_SMOOTHING_DISABLED } from './renderer/canvas/common.js';\nimport { assign } from './obj.js';\nimport { containsCoordinate, createEmpty, extend, forEachCorner, getCenter, getHeight, getTopLeft, getWidth, } from './extent.js';\nimport { createCanvasContext2D } from './dom.js';\nimport { getPointResolution, transform } from './proj.js';\nimport { solveLinearSystem } from './math.js';\nvar brokenDiagonalRendering_;\n/**\n * @type {Array<HTMLCanvasElement>}\n */\nexport var canvasPool = [];\n/**\n * This draws a small triangle into a canvas by setting the triangle as the clip region\n * and then drawing a (too large) rectangle\n *\n * @param {CanvasRenderingContext2D} ctx The context in which to draw the triangle\n * @param {number} u1 The x-coordinate of the second point. The first point is 0,0.\n * @param {number} v1 The y-coordinate of the second point.\n * @param {number} u2 The x-coordinate of the third point.\n * @param {number} v2 The y-coordinate of the third point.\n */\nfunction drawTestTriangle(ctx, u1, v1, u2, v2) {\n    ctx.beginPath();\n    ctx.moveTo(0, 0);\n    ctx.lineTo(u1, v1);\n    ctx.lineTo(u2, v2);\n    ctx.closePath();\n    ctx.save();\n    ctx.clip();\n    ctx.fillRect(0, 0, Math.max(u1, u2) + 1, Math.max(v1, v2));\n    ctx.restore();\n}\n/**\n * Given the data from getImageData, see if the right values appear at the provided offset.\n * Returns true if either the color or transparency is off\n *\n * @param {Uint8ClampedArray} data The data returned from getImageData\n * @param {number} offset The pixel offset from the start of data.\n * @return {boolean} true if the diagonal rendering is broken\n */\nfunction verifyBrokenDiagonalRendering(data, offset) {\n    // the values ought to be close to the rgba(210, 0, 0, 0.75)\n    return (Math.abs(data[offset * 4] - 210) > 2 ||\n        Math.abs(data[offset * 4 + 3] - 0.75 * 255) > 2);\n}\n/**\n * Determines if the current browser configuration can render triangular clip regions correctly.\n * This value is cached so the function is only expensive the first time called.\n * Firefox on Windows (as of now) does not if HWA is enabled. See https://bugzilla.mozilla.org/show_bug.cgi?id=1606976\n * IE also doesn't. Chrome works, and everything seems to work on OSX and Android. This function caches the\n * result. I suppose that it is conceivably possible that a browser might flip modes while the app is\n * running, but lets hope not.\n *\n * @return {boolean} true if the Diagonal Rendering is broken.\n */\nfunction isBrokenDiagonalRendering() {\n    if (brokenDiagonalRendering_ === undefined) {\n        var ctx = document.createElement('canvas').getContext('2d');\n        ctx.globalCompositeOperation = 'lighter';\n        ctx.fillStyle = 'rgba(210, 0, 0, 0.75)';\n        drawTestTriangle(ctx, 4, 5, 4, 0);\n        drawTestTriangle(ctx, 4, 5, 0, 5);\n        var data = ctx.getImageData(0, 0, 3, 3).data;\n        brokenDiagonalRendering_ =\n            verifyBrokenDiagonalRendering(data, 0) ||\n                verifyBrokenDiagonalRendering(data, 4) ||\n                verifyBrokenDiagonalRendering(data, 8);\n    }\n    return brokenDiagonalRendering_;\n}\n/**\n * Calculates ideal resolution to use from the source in order to achieve\n * pixel mapping as close as possible to 1:1 during reprojection.\n * The resolution is calculated regardless of what resolutions\n * are actually available in the dataset (TileGrid, Image, ...).\n *\n * @param {import(\"./proj/Projection.js\").default} sourceProj Source projection.\n * @param {import(\"./proj/Projection.js\").default} targetProj Target projection.\n * @param {import(\"./coordinate.js\").Coordinate} targetCenter Target center.\n * @param {number} targetResolution Target resolution.\n * @return {number} The best resolution to use. Can be +-Infinity, NaN or 0.\n */\nexport function calculateSourceResolution(sourceProj, targetProj, targetCenter, targetResolution) {\n    var sourceCenter = transform(targetCenter, targetProj, sourceProj);\n    // calculate the ideal resolution of the source data\n    var sourceResolution = getPointResolution(targetProj, targetResolution, targetCenter);\n    var targetMetersPerUnit = targetProj.getMetersPerUnit();\n    if (targetMetersPerUnit !== undefined) {\n        sourceResolution *= targetMetersPerUnit;\n    }\n    var sourceMetersPerUnit = sourceProj.getMetersPerUnit();\n    if (sourceMetersPerUnit !== undefined) {\n        sourceResolution /= sourceMetersPerUnit;\n    }\n    // Based on the projection properties, the point resolution at the specified\n    // coordinates may be slightly different. We need to reverse-compensate this\n    // in order to achieve optimal results.\n    var sourceExtent = sourceProj.getExtent();\n    if (!sourceExtent || containsCoordinate(sourceExtent, sourceCenter)) {\n        var compensationFactor = getPointResolution(sourceProj, sourceResolution, sourceCenter) /\n            sourceResolution;\n        if (isFinite(compensationFactor) && compensationFactor > 0) {\n            sourceResolution /= compensationFactor;\n        }\n    }\n    return sourceResolution;\n}\n/**\n * Calculates ideal resolution to use from the source in order to achieve\n * pixel mapping as close as possible to 1:1 during reprojection.\n * The resolution is calculated regardless of what resolutions\n * are actually available in the dataset (TileGrid, Image, ...).\n *\n * @param {import(\"./proj/Projection.js\").default} sourceProj Source projection.\n * @param {import(\"./proj/Projection.js\").default} targetProj Target projection.\n * @param {import(\"./extent.js\").Extent} targetExtent Target extent\n * @param {number} targetResolution Target resolution.\n * @return {number} The best resolution to use. Can be +-Infinity, NaN or 0.\n */\nexport function calculateSourceExtentResolution(sourceProj, targetProj, targetExtent, targetResolution) {\n    var targetCenter = getCenter(targetExtent);\n    var sourceResolution = calculateSourceResolution(sourceProj, targetProj, targetCenter, targetResolution);\n    if (!isFinite(sourceResolution) || sourceResolution <= 0) {\n        forEachCorner(targetExtent, function (corner) {\n            sourceResolution = calculateSourceResolution(sourceProj, targetProj, corner, targetResolution);\n            return isFinite(sourceResolution) && sourceResolution > 0;\n        });\n    }\n    return sourceResolution;\n}\n/**\n * @typedef {Object} ImageExtent\n * @property {import(\"./extent.js\").Extent} extent Extent.\n * @property {HTMLCanvasElement|HTMLImageElement|HTMLVideoElement} image Image.\n */\n/**\n * Renders the source data into new canvas based on the triangulation.\n *\n * @param {number} width Width of the canvas.\n * @param {number} height Height of the canvas.\n * @param {number} pixelRatio Pixel ratio.\n * @param {number} sourceResolution Source resolution.\n * @param {import(\"./extent.js\").Extent} sourceExtent Extent of the data source.\n * @param {number} targetResolution Target resolution.\n * @param {import(\"./extent.js\").Extent} targetExtent Target extent.\n * @param {import(\"./reproj/Triangulation.js\").default} triangulation Calculated triangulation.\n * @param {Array<ImageExtent>} sources Array of sources.\n * @param {number} gutter Gutter of the sources.\n * @param {boolean} [opt_renderEdges] Render reprojection edges.\n * @param {boolean} [opt_interpolate] Use linear interpolation when resampling.\n * @return {HTMLCanvasElement} Canvas with reprojected data.\n */\nexport function render(width, height, pixelRatio, sourceResolution, sourceExtent, targetResolution, targetExtent, triangulation, sources, gutter, opt_renderEdges, opt_interpolate) {\n    var context = createCanvasContext2D(Math.round(pixelRatio * width), Math.round(pixelRatio * height), canvasPool);\n    if (!opt_interpolate) {\n        assign(context, IMAGE_SMOOTHING_DISABLED);\n    }\n    if (sources.length === 0) {\n        return context.canvas;\n    }\n    context.scale(pixelRatio, pixelRatio);\n    function pixelRound(value) {\n        return Math.round(value * pixelRatio) / pixelRatio;\n    }\n    context.globalCompositeOperation = 'lighter';\n    var sourceDataExtent = createEmpty();\n    sources.forEach(function (src, i, arr) {\n        extend(sourceDataExtent, src.extent);\n    });\n    var canvasWidthInUnits = getWidth(sourceDataExtent);\n    var canvasHeightInUnits = getHeight(sourceDataExtent);\n    var stitchContext = createCanvasContext2D(Math.round((pixelRatio * canvasWidthInUnits) / sourceResolution), Math.round((pixelRatio * canvasHeightInUnits) / sourceResolution));\n    if (!opt_interpolate) {\n        assign(stitchContext, IMAGE_SMOOTHING_DISABLED);\n    }\n    var stitchScale = pixelRatio / sourceResolution;\n    sources.forEach(function (src, i, arr) {\n        var xPos = src.extent[0] - sourceDataExtent[0];\n        var yPos = -(src.extent[3] - sourceDataExtent[3]);\n        var srcWidth = getWidth(src.extent);\n        var srcHeight = getHeight(src.extent);\n        // This test should never fail -- but it does. Need to find a fix the upstream condition\n        if (src.image.width > 0 && src.image.height > 0) {\n            stitchContext.drawImage(src.image, gutter, gutter, src.image.width - 2 * gutter, src.image.height - 2 * gutter, xPos * stitchScale, yPos * stitchScale, srcWidth * stitchScale, srcHeight * stitchScale);\n        }\n    });\n    var targetTopLeft = getTopLeft(targetExtent);\n    triangulation.getTriangles().forEach(function (triangle, i, arr) {\n        /* Calculate affine transform (src -> dst)\n         * Resulting matrix can be used to transform coordinate\n         * from `sourceProjection` to destination pixels.\n         *\n         * To optimize number of context calls and increase numerical stability,\n         * we also do the following operations:\n         * trans(-topLeftExtentCorner), scale(1 / targetResolution), scale(1, -1)\n         * here before solving the linear system so [ui, vi] are pixel coordinates.\n         *\n         * Src points: xi, yi\n         * Dst points: ui, vi\n         * Affine coefficients: aij\n         *\n         * | x0 y0 1  0  0 0 |   |a00|   |u0|\n         * | x1 y1 1  0  0 0 |   |a01|   |u1|\n         * | x2 y2 1  0  0 0 | x |a02| = |u2|\n         * |  0  0 0 x0 y0 1 |   |a10|   |v0|\n         * |  0  0 0 x1 y1 1 |   |a11|   |v1|\n         * |  0  0 0 x2 y2 1 |   |a12|   |v2|\n         */\n        var source = triangle.source;\n        var target = triangle.target;\n        var x0 = source[0][0], y0 = source[0][1];\n        var x1 = source[1][0], y1 = source[1][1];\n        var x2 = source[2][0], y2 = source[2][1];\n        // Make sure that everything is on pixel boundaries\n        var u0 = pixelRound((target[0][0] - targetTopLeft[0]) / targetResolution);\n        var v0 = pixelRound(-(target[0][1] - targetTopLeft[1]) / targetResolution);\n        var u1 = pixelRound((target[1][0] - targetTopLeft[0]) / targetResolution);\n        var v1 = pixelRound(-(target[1][1] - targetTopLeft[1]) / targetResolution);\n        var u2 = pixelRound((target[2][0] - targetTopLeft[0]) / targetResolution);\n        var v2 = pixelRound(-(target[2][1] - targetTopLeft[1]) / targetResolution);\n        // Shift all the source points to improve numerical stability\n        // of all the subsequent calculations. The [x0, y0] is used here.\n        // This is also used to simplify the linear system.\n        var sourceNumericalShiftX = x0;\n        var sourceNumericalShiftY = y0;\n        x0 = 0;\n        y0 = 0;\n        x1 -= sourceNumericalShiftX;\n        y1 -= sourceNumericalShiftY;\n        x2 -= sourceNumericalShiftX;\n        y2 -= sourceNumericalShiftY;\n        var augmentedMatrix = [\n            [x1, y1, 0, 0, u1 - u0],\n            [x2, y2, 0, 0, u2 - u0],\n            [0, 0, x1, y1, v1 - v0],\n            [0, 0, x2, y2, v2 - v0],\n        ];\n        var affineCoefs = solveLinearSystem(augmentedMatrix);\n        if (!affineCoefs) {\n            return;\n        }\n        context.save();\n        context.beginPath();\n        if (isBrokenDiagonalRendering() || !opt_interpolate) {\n            // Make sure that all lines are horizontal or vertical\n            context.moveTo(u1, v1);\n            // This is the diagonal line. Do it in 4 steps\n            var steps = 4;\n            var ud = u0 - u1;\n            var vd = v0 - v1;\n            for (var step = 0; step < steps; step++) {\n                // Go horizontally\n                context.lineTo(u1 + pixelRound(((step + 1) * ud) / steps), v1 + pixelRound((step * vd) / (steps - 1)));\n                // Go vertically\n                if (step != steps - 1) {\n                    context.lineTo(u1 + pixelRound(((step + 1) * ud) / steps), v1 + pixelRound(((step + 1) * vd) / (steps - 1)));\n                }\n            }\n            // We are almost at u0r, v0r\n            context.lineTo(u2, v2);\n        }\n        else {\n            context.moveTo(u1, v1);\n            context.lineTo(u0, v0);\n            context.lineTo(u2, v2);\n        }\n        context.clip();\n        context.transform(affineCoefs[0], affineCoefs[2], affineCoefs[1], affineCoefs[3], u0, v0);\n        context.translate(sourceDataExtent[0] - sourceNumericalShiftX, sourceDataExtent[3] - sourceNumericalShiftY);\n        context.scale(sourceResolution / pixelRatio, -sourceResolution / pixelRatio);\n        context.drawImage(stitchContext.canvas, 0, 0);\n        context.restore();\n    });\n    if (opt_renderEdges) {\n        context.save();\n        context.globalCompositeOperation = 'source-over';\n        context.strokeStyle = 'black';\n        context.lineWidth = 1;\n        triangulation.getTriangles().forEach(function (triangle, i, arr) {\n            var target = triangle.target;\n            var u0 = (target[0][0] - targetTopLeft[0]) / targetResolution;\n            var v0 = -(target[0][1] - targetTopLeft[1]) / targetResolution;\n            var u1 = (target[1][0] - targetTopLeft[0]) / targetResolution;\n            var v1 = -(target[1][1] - targetTopLeft[1]) / targetResolution;\n            var u2 = (target[2][0] - targetTopLeft[0]) / targetResolution;\n            var v2 = -(target[2][1] - targetTopLeft[1]) / targetResolution;\n            context.beginPath();\n            context.moveTo(u1, v1);\n            context.lineTo(u0, v0);\n            context.lineTo(u2, v2);\n            context.closePath();\n            context.stroke();\n        });\n        context.restore();\n    }\n    return context.canvas;\n}\n//# sourceMappingURL=reproj.js.map"],"names":[],"sourceRoot":""}