DemoComplex06.kt

import org.openrndr.WindowMultisample
import org.openrndr.application
import org.openrndr.color.rgb
import org.openrndr.draw.DrawPrimitive
import org.openrndr.draw.shadeStyle
import org.openrndr.extra.camera.Orbital
import org.openrndr.extra.meshgenerators.*
import org.openrndr.extra.noise.simplex
import org.openrndr.math.Vector3

/**
 * Generates a grid of grids of boxes.
 * Interactive orbital camera.
 *
 */
fun main() {
    application {
        configure {
            width = 800
            height = 800
            multisample = WindowMultisample.SampleCount(8)
        }
        program {
            extend(Orbital()) {
                this.eye = Vector3(3.0, 3.0, 10.0)
                this.fov = 60.0
            }
            val m = buildTriangleMesh {
                grid(5, 5) { u, v ->
                    isolated {
                        grid(3, 3, 3, GridCoordinates.UNIPOLAR) { x, y, z ->
                            val pos0 = Vector3(u, v, 0.0) * 10.0
                            val pos1 = Vector3(x, y, z) * 2.0
                            val pos2 = pos0 + pos1 + Vector3(
                                y * 0.12 + z * 0.3,
                                x * 0.14 + z * 0.15,
                                x * 0.16 + y * 0.17
                            )
                            // Drop some boxes
                            if(simplex(0, pos1 * 0.5 + pos0 * 0.05) > 0) {
                                translate(pos2)
                                color = rgb(x, y, z)
                                box(1.2, 1.2, 1.2)
                            }
                        }
                    }
                }
            }

            extend {
                drawer.shadeStyle = shadeStyle {
                    fragmentTransform = """
                        x_fill = va_color;
                        vec3 s = sin(v_worldPosition.xyz * 2.5);
                        x_fill.rgb += s * 0.1 - 0.1;
                    """.trimIndent()
                }
                drawer.vertexBuffer(m, DrawPrimitive.TRIANGLES)
            }
        }
    }
}