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[openrndr-demos] Improved DemoTessShader02

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This commit is contained in:
Edwin Jakobs
2020-07-18 10:27:36 +02:00
parent 2a772ced79
commit 239969feb1
1 changed files with 17 additions and 17 deletions
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34
openrndr-demos/src/demo/kotlin/DemoTessShader02.kt
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@@ -1,17 +1,21 @@
import org.openrndr.application
import org.openrndr.color.ColorRGBa
import org.openrndr.draw.*
import org.openrndr.extras.camera.Orbital
import org.openrndr.extras.meshgenerators.boxMesh
import org.openrndr.math.Vector3
import org.openrndr.draw.DrawPrimitive
import org.openrndr.draw.Shader
import org.openrndr.draw.vertexBuffer
import org.openrndr.draw.vertexFormat
import org.openrndr.resourceUrl
import org.openrndr.shape.Ellipse
fun main() {
application {
program {
val ellipse = Ellipse(width/2.0, height/2.0, 100.0, 300.0).contour
val vb = vertexBuffer(vertexFormat {
position(3)
}, 12)
}, ellipse.segments.size * 4)
val shader = Shader.createFromUrls(
vsUrl = resourceUrl("/shaders/ts-02.vert"),
@@ -22,18 +26,13 @@ fun main() {
)
vb.put {
write(Vector3(0.0, 0.0, 0.0))
write(Vector3(100.0, 0.0, 0.0))
write(Vector3(140.0, 200.0, 0.0))
write(Vector3(200.0, 300.0, 0.0))
write(Vector3(0.0, 0.0, 0.0))
write(Vector3(100.0, 0.0, 0.0))
write(Vector3(140.0, 200.0, 0.0))
write(Vector3(200.0, 400.0, 0.0))
write(Vector3(0.0, 0.0, 0.0))
write(Vector3(100.0, 0.0, 0.0))
write(Vector3(140.0, 200.0, 0.0))
write(Vector3(200.0, 500.0, 0.0))
for (segment in ellipse.segments) {
val cubic = segment.cubic
write(cubic.start.xy0)
write(cubic.control[0].xy0)
write(cubic.control[1].xy0)
write(cubic.end.xy0)
}
}
extend {
@@ -43,6 +42,7 @@ fun main() {
shader.uniform("view", drawer.view)
shader.uniform("proj", drawer.projection)
shader.uniform("model", drawer.model)
shader.uniform("resolution", ((mouse.position.x / width) * 63 + 1).toInt())
driver.drawVertexBuffer(shader, listOf(vb), DrawPrimitive.PATCHES, 0, vb.vertexCount)
shader.end()
}