import {
  createCanvasContext2D,
  releaseCanvas
} from "./chunk-YWIWRQT2.js";
import {
  apply
} from "./chunk-JFONEOYG.js";
import {
  createTransformFromCoordinateTransform,
  getPointResolution,
  getTransform,
  transform
} from "./chunk-XZU4LSFD.js";
import {
  modulo,
  solveLinearSystem
} from "./chunk-54BTDBAD.js";
import {
  boundingExtent,
  containsCoordinate,
  createEmpty,
  extend,
  extendCoordinate,
  forEachCorner,
  getArea,
  getBottomLeft,
  getBottomRight,
  getCenter,
  getHeight,
  getTopLeft,
  getTopRight,
  getWidth,
  intersects
} from "./chunk-CKDBVGKM.js";

// node_modules/ol/reproj.js
var brokenDiagonalRendering_;
var canvasPool = [];
function drawTestTriangle(ctx, u1, v1, u2, v2) {
  ctx.beginPath();
  ctx.moveTo(0, 0);
  ctx.lineTo(u1, v1);
  ctx.lineTo(u2, v2);
  ctx.closePath();
  ctx.save();
  ctx.clip();
  ctx.fillRect(0, 0, Math.max(u1, u2) + 1, Math.max(v1, v2));
  ctx.restore();
}
function verifyBrokenDiagonalRendering(data, offset) {
  return Math.abs(data[offset * 4] - 210) > 2 || Math.abs(data[offset * 4 + 3] - 0.75 * 255) > 2;
}
function isBrokenDiagonalRendering() {
  if (brokenDiagonalRendering_ === void 0) {
    const ctx = createCanvasContext2D(6, 6, canvasPool);
    ctx.globalCompositeOperation = "lighter";
    ctx.fillStyle = "rgba(210, 0, 0, 0.75)";
    drawTestTriangle(ctx, 4, 5, 4, 0);
    drawTestTriangle(ctx, 4, 5, 0, 5);
    const data = ctx.getImageData(0, 0, 3, 3).data;
    brokenDiagonalRendering_ = verifyBrokenDiagonalRendering(data, 0) || verifyBrokenDiagonalRendering(data, 4) || verifyBrokenDiagonalRendering(data, 8);
    releaseCanvas(ctx);
    canvasPool.push(ctx.canvas);
  }
  return brokenDiagonalRendering_;
}
function calculateSourceResolution(sourceProj, targetProj, targetCenter, targetResolution) {
  const sourceCenter = transform(targetCenter, targetProj, sourceProj);
  let sourceResolution = getPointResolution(
    targetProj,
    targetResolution,
    targetCenter
  );
  const targetMetersPerUnit = targetProj.getMetersPerUnit();
  if (targetMetersPerUnit !== void 0) {
    sourceResolution *= targetMetersPerUnit;
  }
  const sourceMetersPerUnit = sourceProj.getMetersPerUnit();
  if (sourceMetersPerUnit !== void 0) {
    sourceResolution /= sourceMetersPerUnit;
  }
  const sourceExtent = sourceProj.getExtent();
  if (!sourceExtent || containsCoordinate(sourceExtent, sourceCenter)) {
    const compensationFactor = getPointResolution(sourceProj, sourceResolution, sourceCenter) / sourceResolution;
    if (isFinite(compensationFactor) && compensationFactor > 0) {
      sourceResolution /= compensationFactor;
    }
  }
  return sourceResolution;
}
function calculateSourceExtentResolution(sourceProj, targetProj, targetExtent, targetResolution) {
  const targetCenter = getCenter(targetExtent);
  let sourceResolution = calculateSourceResolution(
    sourceProj,
    targetProj,
    targetCenter,
    targetResolution
  );
  if (!isFinite(sourceResolution) || sourceResolution <= 0) {
    forEachCorner(targetExtent, function(corner) {
      sourceResolution = calculateSourceResolution(
        sourceProj,
        targetProj,
        corner,
        targetResolution
      );
      return isFinite(sourceResolution) && sourceResolution > 0;
    });
  }
  return sourceResolution;
}
function render(width, height, pixelRatio, sourceResolution, sourceExtent, targetResolution, targetExtent, triangulation, sources, gutter, renderEdges, interpolate, drawSingle, clipExtent) {
  const context = createCanvasContext2D(
    Math.round(pixelRatio * width),
    Math.round(pixelRatio * height),
    canvasPool
  );
  if (!interpolate) {
    context.imageSmoothingEnabled = false;
  }
  if (sources.length === 0) {
    return context.canvas;
  }
  context.scale(pixelRatio, pixelRatio);
  function pixelRound(value) {
    return Math.round(value * pixelRatio) / pixelRatio;
  }
  context.globalCompositeOperation = "lighter";
  const sourceDataExtent = createEmpty();
  sources.forEach(function(src, i, arr) {
    extend(sourceDataExtent, src.extent);
  });
  let stitchContext;
  const stitchScale = pixelRatio / sourceResolution;
  const inverseScale = (interpolate ? 1 : 1 + Math.pow(2, -24)) / stitchScale;
  if (!drawSingle || sources.length !== 1 || gutter !== 0) {
    stitchContext = createCanvasContext2D(
      Math.round(getWidth(sourceDataExtent) * stitchScale),
      Math.round(getHeight(sourceDataExtent) * stitchScale),
      canvasPool
    );
    if (!interpolate) {
      stitchContext.imageSmoothingEnabled = false;
    }
    if (sourceExtent && clipExtent) {
      const xPos = (sourceExtent[0] - sourceDataExtent[0]) * stitchScale;
      const yPos = -(sourceExtent[3] - sourceDataExtent[3]) * stitchScale;
      const width2 = getWidth(sourceExtent) * stitchScale;
      const height2 = getHeight(sourceExtent) * stitchScale;
      stitchContext.rect(xPos, yPos, width2, height2);
      stitchContext.clip();
    }
    sources.forEach(function(src, i, arr) {
      if (src.image.width > 0 && src.image.height > 0) {
        if (src.clipExtent) {
          stitchContext.save();
          const xPos2 = (src.clipExtent[0] - sourceDataExtent[0]) * stitchScale;
          const yPos2 = -(src.clipExtent[3] - sourceDataExtent[3]) * stitchScale;
          const width2 = getWidth(src.clipExtent) * stitchScale;
          const height2 = getHeight(src.clipExtent) * stitchScale;
          stitchContext.rect(
            interpolate ? xPos2 : Math.round(xPos2),
            interpolate ? yPos2 : Math.round(yPos2),
            interpolate ? width2 : Math.round(xPos2 + width2) - Math.round(xPos2),
            interpolate ? height2 : Math.round(yPos2 + height2) - Math.round(yPos2)
          );
          stitchContext.clip();
        }
        const xPos = (src.extent[0] - sourceDataExtent[0]) * stitchScale;
        const yPos = -(src.extent[3] - sourceDataExtent[3]) * stitchScale;
        const srcWidth = getWidth(src.extent) * stitchScale;
        const srcHeight = getHeight(src.extent) * stitchScale;
        stitchContext.drawImage(
          src.image,
          gutter,
          gutter,
          src.image.width - 2 * gutter,
          src.image.height - 2 * gutter,
          interpolate ? xPos : Math.round(xPos),
          interpolate ? yPos : Math.round(yPos),
          interpolate ? srcWidth : Math.round(xPos + srcWidth) - Math.round(xPos),
          interpolate ? srcHeight : Math.round(yPos + srcHeight) - Math.round(yPos)
        );
        if (src.clipExtent) {
          stitchContext.restore();
        }
      }
    });
  }
  const targetTopLeft = getTopLeft(targetExtent);
  triangulation.getTriangles().forEach(function(triangle, i, arr) {
    const source = triangle.source;
    const target = triangle.target;
    let x0 = source[0][0], y0 = source[0][1];
    let x1 = source[1][0], y1 = source[1][1];
    let x2 = source[2][0], y2 = source[2][1];
    const u0 = pixelRound((target[0][0] - targetTopLeft[0]) / targetResolution);
    const v0 = pixelRound(
      -(target[0][1] - targetTopLeft[1]) / targetResolution
    );
    const u1 = pixelRound((target[1][0] - targetTopLeft[0]) / targetResolution);
    const v1 = pixelRound(
      -(target[1][1] - targetTopLeft[1]) / targetResolution
    );
    const u2 = pixelRound((target[2][0] - targetTopLeft[0]) / targetResolution);
    const v2 = pixelRound(
      -(target[2][1] - targetTopLeft[1]) / targetResolution
    );
    const sourceNumericalShiftX = x0;
    const sourceNumericalShiftY = y0;
    x0 = 0;
    y0 = 0;
    x1 -= sourceNumericalShiftX;
    y1 -= sourceNumericalShiftY;
    x2 -= sourceNumericalShiftX;
    y2 -= sourceNumericalShiftY;
    const augmentedMatrix = [
      [x1, y1, 0, 0, u1 - u0],
      [x2, y2, 0, 0, u2 - u0],
      [0, 0, x1, y1, v1 - v0],
      [0, 0, x2, y2, v2 - v0]
    ];
    const affineCoefs = solveLinearSystem(augmentedMatrix);
    if (!affineCoefs) {
      return;
    }
    context.save();
    context.beginPath();
    if (isBrokenDiagonalRendering() || !interpolate) {
      context.moveTo(u1, v1);
      const steps = 4;
      const ud = u0 - u1;
      const vd = v0 - v1;
      for (let step = 0; step < steps; step++) {
        context.lineTo(
          u1 + pixelRound((step + 1) * ud / steps),
          v1 + pixelRound(step * vd / (steps - 1))
        );
        if (step != steps - 1) {
          context.lineTo(
            u1 + pixelRound((step + 1) * ud / steps),
            v1 + pixelRound((step + 1) * vd / (steps - 1))
          );
        }
      }
      context.lineTo(u2, v2);
    } else {
      context.moveTo(u1, v1);
      context.lineTo(u0, v0);
      context.lineTo(u2, v2);
    }
    context.clip();
    context.transform(
      affineCoefs[0],
      affineCoefs[2],
      affineCoefs[1],
      affineCoefs[3],
      u0,
      v0
    );
    context.translate(
      sourceDataExtent[0] - sourceNumericalShiftX,
      sourceDataExtent[3] - sourceNumericalShiftY
    );
    let image;
    if (stitchContext) {
      image = stitchContext.canvas;
      context.scale(inverseScale, -inverseScale);
    } else {
      const source2 = sources[0];
      const extent = source2.extent;
      image = source2.image;
      context.scale(
        getWidth(extent) / image.width,
        -getHeight(extent) / image.height
      );
    }
    context.drawImage(image, 0, 0);
    context.restore();
  });
  if (stitchContext) {
    releaseCanvas(stitchContext);
    canvasPool.push(stitchContext.canvas);
  }
  if (renderEdges) {
    context.save();
    context.globalCompositeOperation = "source-over";
    context.strokeStyle = "black";
    context.lineWidth = 1;
    triangulation.getTriangles().forEach(function(triangle, i, arr) {
      const target = triangle.target;
      const u0 = (target[0][0] - targetTopLeft[0]) / targetResolution;
      const v0 = -(target[0][1] - targetTopLeft[1]) / targetResolution;
      const u1 = (target[1][0] - targetTopLeft[0]) / targetResolution;
      const v1 = -(target[1][1] - targetTopLeft[1]) / targetResolution;
      const u2 = (target[2][0] - targetTopLeft[0]) / targetResolution;
      const v2 = -(target[2][1] - targetTopLeft[1]) / targetResolution;
      context.beginPath();
      context.moveTo(u1, v1);
      context.lineTo(u0, v0);
      context.lineTo(u2, v2);
      context.closePath();
      context.stroke();
    });
    context.restore();
  }
  return context.canvas;
}

// node_modules/ol/reproj/Triangulation.js
var MAX_SUBDIVISION = 10;
var MAX_TRIANGLE_WIDTH = 0.25;
var Triangulation = class {
  /**
   * @param {import("../proj/Projection.js").default} sourceProj Source projection.
   * @param {import("../proj/Projection.js").default} targetProj Target projection.
   * @param {import("../extent.js").Extent} targetExtent Target extent to triangulate.
   * @param {import("../extent.js").Extent} maxSourceExtent Maximal source extent that can be used.
   * @param {number} errorThreshold Acceptable error (in source units).
   * @param {?number} destinationResolution The (optional) resolution of the destination.
   * @param {import("../transform.js").Transform} [sourceMatrix] Source transform matrix.
   */
  constructor(sourceProj, targetProj, targetExtent, maxSourceExtent, errorThreshold, destinationResolution, sourceMatrix) {
    this.sourceProj_ = sourceProj;
    this.targetProj_ = targetProj;
    let transformInvCache = {};
    const transformInv = sourceMatrix ? createTransformFromCoordinateTransform(
      (input) => apply(
        sourceMatrix,
        transform(input, this.targetProj_, this.sourceProj_)
      )
    ) : getTransform(this.targetProj_, this.sourceProj_);
    this.transformInv_ = function(c) {
      const key = c[0] + "/" + c[1];
      if (!transformInvCache[key]) {
        transformInvCache[key] = transformInv(c);
      }
      return transformInvCache[key];
    };
    this.maxSourceExtent_ = maxSourceExtent;
    this.errorThresholdSquared_ = errorThreshold * errorThreshold;
    this.triangles_ = [];
    this.wrapsXInSource_ = false;
    this.canWrapXInSource_ = this.sourceProj_.canWrapX() && !!maxSourceExtent && !!this.sourceProj_.getExtent() && getWidth(maxSourceExtent) >= getWidth(this.sourceProj_.getExtent());
    this.sourceWorldWidth_ = this.sourceProj_.getExtent() ? getWidth(this.sourceProj_.getExtent()) : null;
    this.targetWorldWidth_ = this.targetProj_.getExtent() ? getWidth(this.targetProj_.getExtent()) : null;
    const destinationTopLeft = getTopLeft(targetExtent);
    const destinationTopRight = getTopRight(targetExtent);
    const destinationBottomRight = getBottomRight(targetExtent);
    const destinationBottomLeft = getBottomLeft(targetExtent);
    const sourceTopLeft = this.transformInv_(destinationTopLeft);
    const sourceTopRight = this.transformInv_(destinationTopRight);
    const sourceBottomRight = this.transformInv_(destinationBottomRight);
    const sourceBottomLeft = this.transformInv_(destinationBottomLeft);
    const maxSubdivision = MAX_SUBDIVISION + (destinationResolution ? Math.max(
      0,
      Math.ceil(
        Math.log2(
          getArea(targetExtent) / (destinationResolution * destinationResolution * 256 * 256)
        )
      )
    ) : 0);
    this.addQuad_(
      destinationTopLeft,
      destinationTopRight,
      destinationBottomRight,
      destinationBottomLeft,
      sourceTopLeft,
      sourceTopRight,
      sourceBottomRight,
      sourceBottomLeft,
      maxSubdivision
    );
    if (this.wrapsXInSource_) {
      let leftBound = Infinity;
      this.triangles_.forEach(function(triangle, i, arr) {
        leftBound = Math.min(
          leftBound,
          triangle.source[0][0],
          triangle.source[1][0],
          triangle.source[2][0]
        );
      });
      this.triangles_.forEach((triangle) => {
        if (Math.max(
          triangle.source[0][0],
          triangle.source[1][0],
          triangle.source[2][0]
        ) - leftBound > this.sourceWorldWidth_ / 2) {
          const newTriangle = [
            [triangle.source[0][0], triangle.source[0][1]],
            [triangle.source[1][0], triangle.source[1][1]],
            [triangle.source[2][0], triangle.source[2][1]]
          ];
          if (newTriangle[0][0] - leftBound > this.sourceWorldWidth_ / 2) {
            newTriangle[0][0] -= this.sourceWorldWidth_;
          }
          if (newTriangle[1][0] - leftBound > this.sourceWorldWidth_ / 2) {
            newTriangle[1][0] -= this.sourceWorldWidth_;
          }
          if (newTriangle[2][0] - leftBound > this.sourceWorldWidth_ / 2) {
            newTriangle[2][0] -= this.sourceWorldWidth_;
          }
          const minX = Math.min(
            newTriangle[0][0],
            newTriangle[1][0],
            newTriangle[2][0]
          );
          const maxX = Math.max(
            newTriangle[0][0],
            newTriangle[1][0],
            newTriangle[2][0]
          );
          if (maxX - minX < this.sourceWorldWidth_ / 2) {
            triangle.source = newTriangle;
          }
        }
      });
    }
    transformInvCache = {};
  }
  /**
   * Adds triangle to the triangulation.
   * @param {import("../coordinate.js").Coordinate} a The target a coordinate.
   * @param {import("../coordinate.js").Coordinate} b The target b coordinate.
   * @param {import("../coordinate.js").Coordinate} c The target c coordinate.
   * @param {import("../coordinate.js").Coordinate} aSrc The source a coordinate.
   * @param {import("../coordinate.js").Coordinate} bSrc The source b coordinate.
   * @param {import("../coordinate.js").Coordinate} cSrc The source c coordinate.
   * @private
   */
  addTriangle_(a, b, c, aSrc, bSrc, cSrc) {
    this.triangles_.push({
      source: [aSrc, bSrc, cSrc],
      target: [a, b, c]
    });
  }
  /**
   * Adds quad (points in clock-wise order) to the triangulation
   * (and reprojects the vertices) if valid.
   * Performs quad subdivision if needed to increase precision.
   *
   * @param {import("../coordinate.js").Coordinate} a The target a coordinate.
   * @param {import("../coordinate.js").Coordinate} b The target b coordinate.
   * @param {import("../coordinate.js").Coordinate} c The target c coordinate.
   * @param {import("../coordinate.js").Coordinate} d The target d coordinate.
   * @param {import("../coordinate.js").Coordinate} aSrc The source a coordinate.
   * @param {import("../coordinate.js").Coordinate} bSrc The source b coordinate.
   * @param {import("../coordinate.js").Coordinate} cSrc The source c coordinate.
   * @param {import("../coordinate.js").Coordinate} dSrc The source d coordinate.
   * @param {number} maxSubdivision Maximal allowed subdivision of the quad.
   * @private
   */
  addQuad_(a, b, c, d, aSrc, bSrc, cSrc, dSrc, maxSubdivision) {
    const sourceQuadExtent = boundingExtent([aSrc, bSrc, cSrc, dSrc]);
    const sourceCoverageX = this.sourceWorldWidth_ ? getWidth(sourceQuadExtent) / this.sourceWorldWidth_ : null;
    const sourceWorldWidth = (
      /** @type {number} */
      this.sourceWorldWidth_
    );
    const wrapsX = this.sourceProj_.canWrapX() && sourceCoverageX > 0.5 && sourceCoverageX < 1;
    let needsSubdivision = false;
    if (maxSubdivision > 0) {
      if (this.targetProj_.isGlobal() && this.targetWorldWidth_) {
        const targetQuadExtent = boundingExtent([a, b, c, d]);
        const targetCoverageX = getWidth(targetQuadExtent) / this.targetWorldWidth_;
        needsSubdivision = targetCoverageX > MAX_TRIANGLE_WIDTH || needsSubdivision;
      }
      if (!wrapsX && this.sourceProj_.isGlobal() && sourceCoverageX) {
        needsSubdivision = sourceCoverageX > MAX_TRIANGLE_WIDTH || needsSubdivision;
      }
    }
    if (!needsSubdivision && this.maxSourceExtent_) {
      if (isFinite(sourceQuadExtent[0]) && isFinite(sourceQuadExtent[1]) && isFinite(sourceQuadExtent[2]) && isFinite(sourceQuadExtent[3])) {
        if (!intersects(sourceQuadExtent, this.maxSourceExtent_)) {
          return;
        }
      }
    }
    let isNotFinite = 0;
    if (!needsSubdivision) {
      if (!isFinite(aSrc[0]) || !isFinite(aSrc[1]) || !isFinite(bSrc[0]) || !isFinite(bSrc[1]) || !isFinite(cSrc[0]) || !isFinite(cSrc[1]) || !isFinite(dSrc[0]) || !isFinite(dSrc[1])) {
        if (maxSubdivision > 0) {
          needsSubdivision = true;
        } else {
          isNotFinite = (!isFinite(aSrc[0]) || !isFinite(aSrc[1]) ? 8 : 0) + (!isFinite(bSrc[0]) || !isFinite(bSrc[1]) ? 4 : 0) + (!isFinite(cSrc[0]) || !isFinite(cSrc[1]) ? 2 : 0) + (!isFinite(dSrc[0]) || !isFinite(dSrc[1]) ? 1 : 0);
          if (isNotFinite != 1 && isNotFinite != 2 && isNotFinite != 4 && isNotFinite != 8) {
            return;
          }
        }
      }
    }
    if (maxSubdivision > 0) {
      if (!needsSubdivision) {
        const center = [(a[0] + c[0]) / 2, (a[1] + c[1]) / 2];
        const centerSrc = this.transformInv_(center);
        let dx;
        if (wrapsX) {
          const centerSrcEstimX = (modulo(aSrc[0], sourceWorldWidth) + modulo(cSrc[0], sourceWorldWidth)) / 2;
          dx = centerSrcEstimX - modulo(centerSrc[0], sourceWorldWidth);
        } else {
          dx = (aSrc[0] + cSrc[0]) / 2 - centerSrc[0];
        }
        const dy = (aSrc[1] + cSrc[1]) / 2 - centerSrc[1];
        const centerSrcErrorSquared = dx * dx + dy * dy;
        needsSubdivision = centerSrcErrorSquared > this.errorThresholdSquared_;
      }
      if (needsSubdivision) {
        if (Math.abs(a[0] - c[0]) <= Math.abs(a[1] - c[1])) {
          const bc = [(b[0] + c[0]) / 2, (b[1] + c[1]) / 2];
          const bcSrc = this.transformInv_(bc);
          const da = [(d[0] + a[0]) / 2, (d[1] + a[1]) / 2];
          const daSrc = this.transformInv_(da);
          this.addQuad_(
            a,
            b,
            bc,
            da,
            aSrc,
            bSrc,
            bcSrc,
            daSrc,
            maxSubdivision - 1
          );
          this.addQuad_(
            da,
            bc,
            c,
            d,
            daSrc,
            bcSrc,
            cSrc,
            dSrc,
            maxSubdivision - 1
          );
        } else {
          const ab = [(a[0] + b[0]) / 2, (a[1] + b[1]) / 2];
          const abSrc = this.transformInv_(ab);
          const cd = [(c[0] + d[0]) / 2, (c[1] + d[1]) / 2];
          const cdSrc = this.transformInv_(cd);
          this.addQuad_(
            a,
            ab,
            cd,
            d,
            aSrc,
            abSrc,
            cdSrc,
            dSrc,
            maxSubdivision - 1
          );
          this.addQuad_(
            ab,
            b,
            c,
            cd,
            abSrc,
            bSrc,
            cSrc,
            cdSrc,
            maxSubdivision - 1
          );
        }
        return;
      }
    }
    if (wrapsX) {
      if (!this.canWrapXInSource_) {
        return;
      }
      this.wrapsXInSource_ = true;
    }
    if ((isNotFinite & 11) == 0) {
      this.addTriangle_(a, c, d, aSrc, cSrc, dSrc);
    }
    if ((isNotFinite & 14) == 0) {
      this.addTriangle_(a, c, b, aSrc, cSrc, bSrc);
    }
    if (isNotFinite) {
      if ((isNotFinite & 13) == 0) {
        this.addTriangle_(b, d, a, bSrc, dSrc, aSrc);
      }
      if ((isNotFinite & 7) == 0) {
        this.addTriangle_(b, d, c, bSrc, dSrc, cSrc);
      }
    }
  }
  /**
   * Calculates extent of the `source` coordinates from all the triangles.
   *
   * @return {import("../extent.js").Extent} Calculated extent.
   */
  calculateSourceExtent() {
    const extent = createEmpty();
    this.triangles_.forEach(function(triangle, i, arr) {
      const src = triangle.source;
      extendCoordinate(extent, src[0]);
      extendCoordinate(extent, src[1]);
      extendCoordinate(extent, src[2]);
    });
    return extent;
  }
  /**
   * @return {Array<Triangle>} Array of the calculated triangles.
   */
  getTriangles() {
    return this.triangles_;
  }
};
var Triangulation_default = Triangulation;

// node_modules/ol/reproj/common.js
var ERROR_THRESHOLD = 0.5;

export {
  canvasPool,
  calculateSourceResolution,
  calculateSourceExtentResolution,
  render,
  Triangulation_default,
  ERROR_THRESHOLD
};
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