Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

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Essential Geometry

Transcript of Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Page 1: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Essential Geometry

Page 2: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Essential Geometry

Page 3: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Essential Geometry

Page 4: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Essential Geometry

Page 5: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Essential Geometry

Page 6: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Equations

• Implicit– F(x,y) = 0

• Parametric– P(t) = x– Q(t) = y– 0 <= t <= 1

Page 7: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Geometric Operations

• Scan conversion– Convert geometry into pixels– Let the graphics system do it

• Bounding box – Efficiency

• Distance from a point– Selection

• Nearest Point– Snapping

• Inside/Outside– Selection

Page 8: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Points and Vectors

dX

dYX,Y

Page 9: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Geometric Operations

Page 10: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Geometric OperationsTop

Left Right

Bottom

Page 11: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Geometric Operations

X1,Y1

X1,Y1

ImplicitParametric

Page 12: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Geometric Operations

Cx,CyR

ImplicitParametric

Page 13: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Geometric OperationsTop

Left Right

Bottom

Page 14: Essential Geometry. Equations Implicit – F(x,y) = 0 Parametric – P(t) = x – Q(t) = y – 0

Geometric Operations

B

Cx,CyA

ImplicitParametric