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14 KiB
JSON
1 line
14 KiB
JSON
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{"ast":null,"code":"import { mixNumber } from 'motion-dom';\nimport { progress, clamp } from 'motion-utils';\nimport { calcLength } from '../../../projection/geometry/delta-calc.mjs';\n\n/**\n * Apply constraints to a point. These constraints are both physical along an\n * axis, and an elastic factor that determines how much to constrain the point\n * by if it does lie outside the defined parameters.\n */\nfunction applyConstraints(point, _ref, elastic) {\n let {\n min,\n max\n } = _ref;\n if (min !== undefined && point < min) {\n // If we have a min point defined, and this is outside of that, constrain\n point = elastic ? mixNumber(min, point, elastic.min) : Math.max(point, min);\n } else if (max !== undefined && point > max) {\n // If we have a max point defined, and this is outside of that, constrain\n point = elastic ? mixNumber(max, point, elastic.max) : Math.min(point, max);\n }\n return point;\n}\n/**\n * Calculate constraints in terms of the viewport when defined relatively to the\n * measured axis. This is measured from the nearest edge, so a max constraint of 200\n * on an axis with a max value of 300 would return a constraint of 500 - axis length\n */\nfunction calcRelativeAxisConstraints(axis, min, max) {\n return {\n min: min !== undefined ? axis.min + min : undefined,\n max: max !== undefined ? axis.max + max - (axis.max - axis.min) : undefined\n };\n}\n/**\n * Calculate constraints in terms of the viewport when\n * defined relatively to the measured bounding box.\n */\nfunction calcRelativeConstraints(layoutBox, _ref2) {\n let {\n top,\n left,\n bottom,\n right\n } = _ref2;\n return {\n x: calcRelativeAxisConstraints(layoutBox.x, left, right),\n y: calcRelativeAxisConstraints(layoutBox.y, top, bottom)\n };\n}\n/**\n * Calculate viewport constraints when defined as another viewport-relative axis\n */\nfunction calcViewportAxisConstraints(layoutAxis, constraintsAxis) {\n let min = constraintsAxis.min - layoutAxis.min;\n let max = constraintsAxis.max - layoutAxis.max;\n // If the constraints axis is actually smaller than the layout axis then we can\n // flip the constraints\n if (constraintsAxis.max - constraintsAxis.min < layoutAxis.max - layoutAxis.min) {\n [min, max] = [max, min];\n }\n return {\n min,\n max\n };\n}\n/**\n * Calculate viewport constraints when defined as another viewport-relative box\n */\nfunction calcViewportConstraints(layoutBox, constraintsBox) {\n return {\n x: calcViewportAxisConstraints(layoutBox.x, constraintsBox.x),\n y: calcViewportAxisConstraints(layoutBox.y, constraintsBox.y)\n };\n}\n/**\n * Calculate a transform origin relative to the source axis, between 0-1, that results\n * in an asthetically pleasing scale/transform needed to project from source to target.\n */\nfunction calcOrigin(source, target) {\n let origin = 0.5;\n const sourceLength = calcLength(source);\n const targetLength = calcLength(target);\n if (targetLength > sourceLength) {\n origin = progress(target.min, target.max - sourceLength, source.min);\n } else if (sourceLength > targetLength) {\n origin = progress(source.min, source.max - targetLength, target.min);\n }\n return clamp(0, 1, origin);\n}\n/**\n * Rebase the calculated viewport constraints relative to the layout.min point.\n */\nfunction rebaseAxisConstraints(layout, constraints) {\n const relativeConstraints = {};\n if (constraints.min !== undefined) {\n relativeConstraints.min = constraints.min - layout.min;\n }\n if (constraints.max !== undefined) {\n relativeConstraints.max = constraints.max - layout.min;\n }\n return relativeConstraints;\n}\nconst defaultElastic = 0.35;\n/**\n * Accepts a dragElastic prop and returns resolved elastic values for each axis.\n */\nfunction resolveDragElastic() {\n let dragElastic = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : defaultElastic;\n if (dragElastic === false) {\n dragElastic = 0;\n } else if (dragElastic === true) {\n dragElastic = defaultElastic;\n }\n return {\n
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