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[orx-noise] Add hash functions

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This commit is contained in:
Edwin Jakobs
2024-10-20 14:14:50 +02:00
parent 6e1e161726
commit fba1e5b61a
23 changed files with 473 additions and 63 deletions
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72
orx-mesh-generators/src/commonMain/kotlin/mesh/Box.kt Normal file
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@@ -0,0 +1,72 @@
package org.openrndr.extra.mesh.generators
import org.openrndr.extra.mesh.*
import org.openrndr.math.Vector2
import org.openrndr.math.Vector3
class MeshBuilder {
val vertexData = MutableVertexData()
val polygons = mutableListOf<IndexedPolygon>()
val mesh = MutableMeshData(vertexData, polygons)
}
fun box(): MeshData {
val positions = listOf(
Vector3(-0.5, -0.5, -0.5),
Vector3(0.5, -0.5, -0.5),
Vector3(-0.5, 0.5, -0.5),
Vector3(0.5, 0.5, -0.5),
Vector3(-0.5, -0.5, 0.5),
Vector3(0.5, -0.5, 0.5),
Vector3(-0.5, 0.5, 0.5),
Vector3(0.5, 0.5, 0.5),
)
val textureCoords = listOf(
Vector2(0.0, 0.0),
Vector2(1.0, 0.0),
Vector2(0.0, 1.0),
Vector2(1.0, 1.0),
)
val normals = listOf(
Vector3(-1.0, 0.0, 0.0),
Vector3(1.0, 0.0, 0.0),
Vector3(0.0, -1.0, 0.0),
Vector3(0.0, 1.0, 0.0),
Vector3(0.0, 0.0, -1.0),
Vector3(0.0, 0.0, 1.0)
)
val polygons = listOf(
// -x
IndexedPolygon(
positions = listOf(0, 2, 4, 6),
textureCoords = listOf(0, 1, 3, 2),
colors = emptyList(),
normals = listOf(0, 0, 0, 0),
tangents = listOf(5, 5, 5, 5),
bitangents = listOf(3, 3, 3, 3)
),
// +x
IndexedPolygon(
positions = listOf(1, 3, 5, 7),
textureCoords = listOf(0, 1, 3, 2),
colors = emptyList(),
normals = listOf(1, 1, 1, 1),
tangents = listOf(4, 4, 4, 4),
bitangents = listOf(3, 3, 3, 3)
)
)
return MeshData(
VertexData(
positions = positions,
textureCoords = textureCoords,
normals = normals,
tangents = normals,
bitangents = normals
), polygons
)
}

1
orx-mesh-generators/src/jvmDemo/kotlin/decal/DemoDecal01.kt
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@@ -13,6 +13,7 @@ import java.io.File
/**
* Demonstrate decal generator as an object slicer
* @see <img src="https://raw.githubusercontent.com/openrndr/orx/media/orx-mesh-generators/images/decal-DemoDecal01Kt.png">
*/
fun main() {
application {

1
orx-mesh-generators/src/jvmDemo/kotlin/decal/DemoDecal02.kt
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@@ -15,6 +15,7 @@ import kotlin.math.PI
/**
* Demonstrate decal generation and rendering
* @see <img src="https://raw.githubusercontent.com/openrndr/orx/media/orx-mesh-generators/images/decal-DemoDecal02Kt.png">
*/
fun main() {
application {

39
orx-mesh-generators/src/jvmDemo/kotlin/tangents/DemoTangents01.kt Normal file
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@@ -0,0 +1,39 @@
package tangents
import org.openrndr.application
import org.openrndr.draw.DrawPrimitive
import org.openrndr.draw.shadeStyle
import org.openrndr.extra.camera.Orbital
import org.openrndr.extra.mesh.toVertexBuffer
import org.openrndr.extra.meshgenerators.tangents.estimateTangents
import org.openrndr.extra.objloader.loadOBJMeshData
import org.openrndr.math.Vector3
import java.io.File
fun main() = application {
program {
val obj = loadOBJMeshData(File("demo-data/obj-models/suzanne/Suzanne.obj")).toMeshData().triangulate()
val tangentObj = obj.estimateTangents()
val objVB = tangentObj.toVertexBuffer()
extend(Orbital()) {
eye = Vector3(0.0, 0.0, 2.0)
}
extend {
drawer.shadeStyle = shadeStyle {
fragmentTransform = """
vec3 viewTangent = (u_viewNormalMatrix * u_modelNormalMatrix * vec4(va_tangent, 0.0)).xyz;
vec3 viewBitangent = (u_viewNormalMatrix * u_modelNormalMatrix * vec4(va_bitangent, 0.0)).xyz;
float c = cos(100.0*dot(v_worldPosition, va_normal)) * 0.5 + 0.5;
//x_fill.rgb = normalize(viewTangent)*0.5+0.5;
x_fill.rgb = vec3(c);
""".trimIndent()
}
drawer.vertexBuffer(objVB, DrawPrimitive.TRIANGLES)
}
}
}