SVG Graphics Geometry
Guide
css-matrix
Guide
css-matrix
  • Part 0. SVG 기초

    • SVG란 무엇인가
    • viewBox와 user space
    • transform attribute와 matrix
    • SVG 문서 구조와 기본 도형
  • Part 1. Path grammar

    • path d 명령어 — M, L, Z
    • H, V — 축 정렬 직선
    • C — cubic Bézier
    • Q — quadratic Bézier
    • S, T — smooth continuation
    • A — elliptical arc
    • path bounding box
  • Part 2. Stroke geometry

    • 점에서 stroke까지의 거리
    • join, cap, miter limit
    • stroke align과 outline 개념
    • miter length 공식
  • Part 3. Fill rules

    • nonzero vs evenodd
    • fill hit testing
  • Part 4. Path sampling

    • flatten tolerance
    • path length
    • point at length와 tangent
  • Part 5. Paint servers

    • linearGradient 좌표
    • clipPath와 mask 개념
  • Part 6. Path editor capstone

    • path handle 모델
    • handle hit testing
    • handle drag로 segment 갱신
    • mini path editor — SVG round-trip
  • Part 7. Fill & winding deep dive

    • winding vs ray casting
    • compound path — 여러 subpath
    • self-intersection
    • path boolean
    • fill vs stroke hit 우선순위
    • scanline parity
  • Part 8. Pattern & gradient

    • radialGradient
    • pattern tile
    • gradientUnits와 spreadMethod
  • Part 9. SVG filter & Figma effects

    • Figma DROP_SHADOW → SVG filter
    • filter chain 개요
    • blur · offset · merge
    • inner shadow
    • layer blur vs background blur
    • Figma effect 매핑표 전체
  • Part 10. Figma ↔ SVG bridge

    • vector network vs path d
    • fill · stroke export
    • boolean operations export
    • mask · clip export
  • Part 11. Icon design

    • pixel grid · optical alignment
    • fill vs stroke icons
    • symbol · sprite · currentColor
    • path simplification
  • Appendix A. SVG in CSS

    • currentColor · CSS theming
    • sprite data URI
    • SVG optimization pipeline
  • Appendix B. Engine extras

    • dash offset animation
    • adaptive flatten
    • arc → cubic 변환
    • multi-subpath editing
  • Part 12. Foundations primer

    • capability map
    • coordinate stack
  • Part 13. Figma ↔ SVG (deep)

    • Figma paint gap map
    • radial · angular gradient export
    • image · pattern fill
    • stroke align export
    • blend mode · layer opacity
  • Part 14. SVG spec breadth

    • markers — 화살표와 dash 끝
    • text · textPath
    • paint-order · opacity · filters
    • arc flatten 통합
  • Part 15. Curve calculus

    • de Casteljau subdivision
    • flatness와 chord error
    • 곡률 κ와 법선
    • arc center parameterization
    • G¹ smooth — S와 T
    • shoelace signed area
  • Part 16. Intersection & proximity

    • segment intersection
    • line ∩ cubic · curve ∩ curve
    • closest point on curve
  • Part 17. Offset curves

    • normal offset sampling
    • offset cusps
  • Part 18. Transform algebra

    • affine inverse & decompose
    • transform path vs group
  • Part 19. Rational curves

    • circle as cubic — κ constant
    • rational curves & exact arcs
  • Part 20. Tessellation & pixels

    • convex triangulation · ear clipping
    • evenodd parity → pixels
  • Part 21. Compositing math

    • Gaussian blur kernel
    • Porter–Duff & premultiplied α
  • Part 22. Math topic map

    • SVG 수학 주제 지도
  • Part 23. SVG animation

    • SMIL — animate 속성
    • SMIL — animateTransform
    • SMIL — animateMotion
    • stroke dash draw-on
    • CSS offset-path motion
    • path morph
    • JS motion along path
  • Part 24. Motion precision

    • uniform speed along path
    • cubic–cubic intersection
    • SVGPathElement length API
    • SMIL keyTimes & keySplines
    • degree elevation Q→C
  • Part 25. GPU mesh & WAAPI

    • triangulation with holes
    • WAAPI + SVG attributes
    • evenodd fill + triangle mesh

Figma effect 매핑표 전체

Part 9 마무리 — Figma effects[] 네 타입을 figmaEffectToSvgFilter 한 곳에서 SVG markup으로 dispatch합니다. 031–038는 각 타입의 수업이고, 여기서는 플러그인 export 입구를 고정합니다.

FIGMA_EFFECT_FILTER_MAP

문서·데모 readout이 참조하는 표 (index.js):

Figma typeSVG (요약)전용 함수
DROP_SHADOWfeDropShadow 또는 blur→merge chainfigmaDropShadowToSvgFilter
INNER_SHADOWcomposite로 안쪽 clipfigmaInnerShadowToSvgFilter
LAYER_BLURfeGaussianBlur on SourceGraphicfigmaLayerBlurToSvgFilter
BACKGROUND_BLURblur BackgroundImage + overfigmaBackgroundBlurToSvgFilter

상세 필드: figma-filter-mapping

dispatch API

import { figmaEffectToSvgFilter, FIGMA_EFFECT_FILTER_MAP } from "svg-matrix-core";

// 타입 목록
FIGMA_EFFECT_FILTER_MAP.map((row) => row.figma);
// ["DROP_SHADOW", "INNER_SHADOW", "LAYER_BLUR", "BACKGROUND_BLUR"]

const mapped = figmaEffectToSvgFilter({
  type: "INNER_SHADOW",
  offset: { x: 0, y: 6 },
  radius: 8,
  color: { r: 0, g: 0, b: 0, a: 0.35 }
}, "fx-custom-id");

// { type, filterId, filterAttr, markup, ... }

filterId 생략 시 type별 기본 id (figma-drop-shadow, …).

지원하지 않는 type

figmaEffectToSvgFilter({ type: "UNKNOWN" });
// throw: Unsupported Figma effect type

플러그인은 FIGMA_PAINT_GAP_MAP(057)처럼 warning 목록을 UI에 보여 주는 패턴이 좋습니다.

end-to-end export

function exportNodeEffects(figmaNode) {
  const filters = [];
  for (const effect of figmaNode.effects ?? []) {
    if (effect.visible === false) continue;
    const { filterId, filterAttr, markup } = figmaEffectToSvgFilter(effect);
    filters.push({ filterId, markup });
  }
  return {
    defsFilters: filters.map((f) => f.markup).join("\n"),
    filterAttr: filters.length ? `url(#${filters[0].filterId})` : null
    // 다중 effect: filter 체인 또는 merge는 제품 정책
  };
}
<svg>
  <defs>
    <!-- exportNodeEffects.defsFilters -->
  </defs>
  <g filter="url(#figma-drop-shadow)">
    <path d="..."/>
  </g>
</svg>

다중 shadow는 filter를 합치거나 markup을 이어 붙입니다 — Figma는 effect 배열 순서가 중요합니다.

데모

toolbar effect 셀렉트 — 네 type 전환 시:

  1. rect 미리보기 갱신
  2. readout: FIGMA_EFFECT_FILTER_MAP의 svg, notes + 전체 markup

type별로 markup 길이·primitive 개수 차이를 비교하세요.

CSS 병행 export

FigmaSVG (이 코스)HTML/CSS
DROP_SHADOWfilter + feDropShadowfilter: drop-shadow()
LAYER_BLURSourceGraphic blurfilter: blur()
BACKGROUND_BLURBackgroundImagebackdrop-filter

동일 JSON에서 SVG 파일과 CSS 스니펫을 같이 내면 handoff가 쉽습니다.

Core API

  • figmaEffectToSvgFilter
  • FIGMA_EFFECT_FILTER_MAP
  • per-type: figmaDropShadowToSvgFilter, figmaInnerShadowToSvgFilter, figmaLayerBlurToSvgFilter, figmaBackgroundBlurToSvgFilter

Part 9 학습 순서 (권장)

035 chain 읽기 → 031 drop shortcut → 036 merge 펼치기 → 037 inner → 038 blur types → 039 dispatch

오늘의 핵심

export 입구는 figmaEffectToSvgFilter 하나. 개별 강의는 primitive 이해용, 플러그인은 여기서 markup만 <defs>에 넣으면 됩니다.

최근 수정: 26. 5. 17. PM 4:35
Contributors: jinho.park.s3, Cursor
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