Fix problem in UV coord generation of plane meshes

build.gradle

@@ -20,16 +20,26 @@ project.ext {
     spekVersion = "2.0.10"
     libfreenectVersion = "0.5.7-1.5.2"
     gsonVersion = "2.8.6"
-}
 
+}
+switch (org.gradle.internal.os.OperatingSystem.current()) {
+    case org.gradle.internal.os.OperatingSystem.WINDOWS:
+        project.ext.openrndrOS = "windows"
+        break
+    case org.gradle.internal.os.OperatingSystem.LINUX:
+        project.ext.openrndrOS = "linux-x64"
+        break
+    case org.gradle.internal.os.OperatingSystem.MAC_OS:
+        project.ext.openrndrOS = "macos"
+        break
+}
 dokka {
     moduleName = "$rootProject.name"
     outputDirectory = "$buildDir/docs"
     outputFormat = "html"
     includes = ['Module.md']
     sourceDirs = files(subprojects.collect { p -> new File(p.projectDir, "/src/main/kotlin") })
-  }
-
+}
 
 allprojects {
     apply plugin: 'idea'
@@ -72,13 +82,11 @@ allprojects {
         runtimeOnly "org.jetbrains.kotlin:kotlin-reflect:$kotlinVersion"
     }
 
-
     java {
         sourceCompatibility = JavaVersion.VERSION_1_8
         targetCompatibility = JavaVersion.VERSION_1_8
     }
 
-
     javadoc {
         options.addBooleanOption 'Xdoclint:none', true
     }

orx-mesh-generators/build.gradle

@@ -0,0 +1,18 @@
+sourceSets {
+    demo {
+        java {
+            srcDirs = ["src/demo/kotlin"]
+            compileClasspath += main.getCompileClasspath()
+            runtimeClasspath += main.getRuntimeClasspath()
+        }
+    }
+}
+
+dependencies {
+    demoImplementation(project(":orx-camera"))
+    demoImplementation("org.openrndr:openrndr-core:$openrndrVersion")
+    demoRuntimeOnly("org.openrndr:openrndr-gl3:$openrndrVersion")
+    demoRuntimeOnly("org.openrndr:openrndr-gl3-natives-$openrndrOS:$openrndrVersion")
+
+    demoImplementation(sourceSets.getByName("main").output)
+}

orx-mesh-generators/src/demo/kotlin/DemoBox.kt

@@ -0,0 +1,35 @@
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.DrawPrimitive
+import org.openrndr.draw.colorBuffer
+import org.openrndr.draw.shadeStyle
+import org.openrndr.extras.camera.Orbital
+import org.openrndr.extras.meshgenerators.boxMesh
+
+fun main() {
+    application {
+        program {
+            val box = boxMesh(1.0, 1.0, 1.0)
+            val texture = colorBuffer(256, 256)
+            val s = texture.shadow
+            for (y in 0 until 256) {
+                for (x in 0 until 256) {
+                    s[x, y] = ColorRGBa(x/256.0, y/256.0, 0.0, 1.0)
+                }
+            }
+            s.upload()
+
+            extend(Orbital())
+            extend {
+                drawer.background(ColorRGBa.PINK)
+                drawer.shadeStyle = shadeStyle {
+                    fragmentTransform = """
+                        x_fill = texture(p_texture, va_texCoord0.xy);
+                    """.trimIndent()
+                    parameter("texture", texture)
+                }
+                drawer.vertexBuffer(box, DrawPrimitive.TRIANGLES)
+            }
+        }
+    }
+}

orx-mesh-generators/src/main/kotlin/Plane.kt

@@ -57,7 +57,7 @@ fun generatePlane(center: Vector3,
 
     val corner = center - forward.normalized *  (height*0.5) - right.normalized * (width * 0.5)
 
-    val step = Vector2(1.0 / width, 1.0 / height)
+    val step = Vector2(1.0 / widthSegments, 1.0 / heightSegments)
 
     for (v in 0 until heightSegments) {
         for (u in 0 until widthSegments) {