55 lines
1.7 KiB
Kotlin
55 lines
1.7 KiB
Kotlin
package decal
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import org.openrndr.application
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import org.openrndr.draw.DrawPrimitive
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import org.openrndr.draw.shadeStyle
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import org.openrndr.extra.camera.Orbital
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import org.openrndr.extra.mesh.*
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import org.openrndr.extra.objloader.loadOBJMeshData
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import org.openrndr.extra.meshgenerators.decal.decal
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import org.openrndr.math.Vector3
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import org.openrndr.math.transforms.buildTransform
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import java.io.File
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/**
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* Demonstrate decal generator as an object slicer
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* @see <img src="https://raw.githubusercontent.com/openrndr/orx/media/orx-mesh-generators/images/decal-DemoDecal01Kt.png">
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*/
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fun main() = application {
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configure {
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width = 720
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height = 720
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}
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program {
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val obj = loadOBJMeshData(File("demo-data/obj-models/suzanne/Suzanne.obj")).toMeshData().triangulate()
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val slices = 25
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val sliceStep = 0.1
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val sliceWidth = 0.14
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val sliceVBs = (0 until slices).map {
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val projector = buildTransform {
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translate(0.0, 0.0, -1.0 + it * sliceStep)
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}
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val decal = obj.decal(projector, Vector3(4.0, 4.0, sliceWidth))
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val vb = decal.toVertexBuffer()
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vb
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}
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extend(Orbital()) {
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eye = Vector3(0.0, 0.0, 2.0)
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}
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extend {
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drawer.shadeStyle = shadeStyle {
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fragmentTransform = """x_fill.rgb = v_viewNormal.rgb * 0.5 + 0.5; """
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}
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drawer.translate(0.0, 0.0, slices * 0.5 * 0.5)
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for (i in 0 until sliceVBs.size) {
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drawer.vertexBuffer(sliceVBs[i], DrawPrimitive.TRIANGLES)
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drawer.translate(0.0, 0.0, -0.5)
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}
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}
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}
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}
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