62 lines
1.4 KiB
Kotlin
62 lines
1.4 KiB
Kotlin
package org.openrndr.extra.shadestyles
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import org.openrndr.draw.ColorBuffer
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import org.openrndr.draw.ShadeStyle
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import org.openrndr.math.Vector2
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class ImageFit : ShadeStyle() {
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var image: ColorBuffer by Parameter()
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var flipV: Boolean by Parameter()
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var position: Vector2 by Parameter()
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init {
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position = Vector2.ZERO
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fragmentTransform = """
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| vec2 uv = c_boundsPosition.xy;
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| vec2 ts = textureSize(p_image, 0);
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| float boundsAR = c_boundsSize.x / c_boundsSize.y;
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| vec2 shift = (p_position + vec2(1.0, 1.0)) / 2.0;
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| if (c_boundsSize.x > c_boundsSize.y) {
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| uv.y -= shift.y;
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| uv.y /= boundsAR;
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| uv.y += shift.y;
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| } else {
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| uv.x -= shift.x;
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| uv.x *= boundsAR;
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| uv.x += shift.x;
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| }
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| float textureAR = ts.x / ts.y;
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| if (ts.x > ts.y) {
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| uv.x -= 0.5;
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| uv.x /= textureAR;
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| uv.x += 0.5;
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| } else {
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| uv.y -= 0.5;
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| uv.y *= textureAR;
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| uv.y += 0.5;
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| }
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| if (p_flipV) {
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| uv.y = 1.0 - uv.y;
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| }
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| #ifndef OR_GL_TEXTURE2D
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| vec4 img = texture(p_image, uv);
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| #else
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| vec4 img = texture2D(p_image, uv);
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| #endif
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| x_fill = img;
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| """.trimMargin()
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}
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}
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fun imageFit(image: ColorBuffer, position: Vector2 = Vector2.ZERO) : ImageFit {
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val im = ImageFit()
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im.image = image
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im.flipV = true
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im.position = position
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return im
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}
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