Aspose.Slides FOSS
Python
Как да приложите 3D ефекти и сенки към форми

Как да приложите 3D ефекти и сенки към форми

Aspose.Slides FOSS предоставя две независими системи за ефекти за всяка форма:

  • shape.effect_format: 2D визуални ефекти: външна сянка, светене, размазване, мек ръб
  • shape.three_d_format: 3D външен вид: фаска, перспектива на камерата, осветителна система, материал, дълбочина

И двете системи могат да се комбинират върху една и съща форма.

Предварителни условия 

pip install aspose-slides-foss

Добавете външна падаща сянка 

from aspose.slides_foss import ShapeType
from aspose.slides_foss.drawing import Color
import aspose.slides_foss as slides
from aspose.slides_foss.export import SaveFormat

with slides.Presentation() as prs:
    shape = prs.slides[0].shapes.add_auto_shape(
        ShapeType.RECTANGLE, 100, 100, 300, 120
    )
    shape.add_text_frame("Shadowed Shape")

    ef = shape.effect_format
    ef.enable_outer_shadow_effect()
    ef.outer_shadow_effect.blur_radius = 10       # softness in points
    ef.outer_shadow_effect.direction = 315        # 315° = upper-left
    ef.outer_shadow_effect.distance = 8           # offset in points
    ef.outer_shadow_effect.shadow_color.color = Color.from_argb(128, 0, 0, 0)

    prs.save("shadow.pptx", SaveFormat.PPTX)

Общи direction стойности: 0=дясно, 45=долу-дясно, 90=надолу, 180=ляво, 270=нагоре, 315=горе-вляво.

Добавете светлинен ефект 

from aspose.slides_foss import ShapeType
from aspose.slides_foss.drawing import Color
import aspose.slides_foss as slides
from aspose.slides_foss.export import SaveFormat

with slides.Presentation() as prs:
    shape = prs.slides[0].shapes.add_auto_shape(
        ShapeType.ELLIPSE, 150, 100, 250, 250
    )

    ef = shape.effect_format
    ef.enable_glow_effect()
    ef.glow_effect.radius = 20
    ef.glow_effect.color.color = Color.gold

    prs.save("glow.pptx", SaveFormat.PPTX)

Приложете гаусов размазък 

from aspose.slides_foss import ShapeType
import aspose.slides_foss as slides
from aspose.slides_foss.export import SaveFormat

with slides.Presentation() as prs:
    shape = prs.slides[0].shapes.add_auto_shape(
        ShapeType.RECTANGLE, 100, 100, 350, 180
    )
    shape.effect_format.set_blur_effect(radius=10, grow=True)

    prs.save("blur.pptx", SaveFormat.PPTX)

grow=True разширява областта на размазване извън границата на формата; grow=False отрязва размазването вътре в формата.

Приложете 3D фаска 

from aspose.slides_foss import ShapeType, BevelPresetType
import aspose.slides_foss as slides
from aspose.slides_foss.export import SaveFormat

with slides.Presentation() as prs:
    shape = prs.slides[0].shapes.add_auto_shape(
        ShapeType.RECTANGLE, 150, 150, 280, 120
    )
    shape.add_text_frame("3D Button")

    tdf = shape.three_d_format
    tdf.bevel_top.bevel_type = BevelPresetType.CIRCLE
    tdf.bevel_top.width = 12
    tdf.bevel_top.height = 6

    prs.save("bevel.pptx", SaveFormat.PPTX)

BevelPresetType стойности: CIRCLE, RELAXED_INSET, COOL_SLANT, DIVOT, RIBLET, HARD_EDGE, SLOPE, CONVEX

3D фаска с камера и осветителна система 

from aspose.slides_foss import (
    ShapeType, BevelPresetType, CameraPresetType,
    LightRigPresetType, LightingDirection, MaterialPresetType,
)
import aspose.slides_foss as slides
from aspose.slides_foss.export import SaveFormat

with slides.Presentation() as prs:
    shape = prs.slides[0].shapes.add_auto_shape(
        ShapeType.RECTANGLE, 150, 150, 280, 120
    )
    shape.add_text_frame("Metal Button")

    tdf = shape.three_d_format
    tdf.bevel_top.bevel_type = BevelPresetType.CIRCLE
    tdf.bevel_top.width = 10
    tdf.bevel_top.height = 5
    tdf.camera.camera_type = CameraPresetType.PERSPECTIVE_ABOVE
    tdf.light_rig.light_type = LightRigPresetType.BALANCED
    tdf.light_rig.direction = LightingDirection.TOP
    tdf.material = MaterialPresetType.METAL
    tdf.depth = 20

    prs.save("3d-metal.pptx", SaveFormat.PPTX)

Комбиниране на сянка и 3D фаска

Двата системи за ефекти могат да бъдат активни едновременно върху една и съща форма:

from aspose.slides_foss import (
    ShapeType, FillType, BevelPresetType,
    CameraPresetType, MaterialPresetType,
)
from aspose.slides_foss.drawing import Color
import aspose.slides_foss as slides
from aspose.slides_foss.export import SaveFormat

with slides.Presentation() as prs:
    shape = prs.slides[0].shapes.add_auto_shape(
        ShapeType.ROUND_CORNER_RECTANGLE, 150, 150, 320, 130
    )
    shape.add_text_frame("Premium Card")

    # Solid fill
    shape.fill_format.fill_type = FillType.SOLID
    shape.fill_format.solid_fill_color.color = Color.from_argb(255, 30, 80, 180)

    # 3D bevel
    tdf = shape.three_d_format
    tdf.bevel_top.bevel_type = BevelPresetType.CIRCLE
    tdf.bevel_top.width = 8
    tdf.camera.camera_type = CameraPresetType.PERSPECTIVE_ABOVE
    tdf.material = MaterialPresetType.PLASTIC

    # Drop shadow
    ef = shape.effect_format
    ef.enable_outer_shadow_effect()
    ef.outer_shadow_effect.blur_radius = 12
    ef.outer_shadow_effect.direction = 270
    ef.outer_shadow_effect.distance = 6
    ef.outer_shadow_effect.shadow_color.color = Color.from_argb(80, 0, 0, 0)

    prs.save("premium-card.pptx", SaveFormat.PPTX)

Проверка и премахване на ефекти 

from aspose.slides_foss import ShapeType
import aspose.slides_foss as slides

with slides.Presentation() as prs:
    shape = prs.slides[0].shapes.add_auto_shape(
        ShapeType.RECTANGLE, 100, 100, 200, 100
    )
    ef = shape.effect_format

    ef.enable_outer_shadow_effect()
    ef.enable_glow_effect()
    print(f"Has effects: {not ef.is_no_effects}")  # True

    ef.disable_outer_shadow_effect()
    ef.disable_glow_effect()
    print(f"Has effects: {not ef.is_no_effects}")  # False

Виж също

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