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Orbital Camera is an extension that can manage it's own life-cycle

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This commit is contained in:
Ricardo Matias
2019-11-21 13:56:09 +01:00
parent 7377f35a00
commit ead9b8a0d3
2 changed files with 68 additions and 18 deletions
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49
orx-camera/src/main/kotlin/OrbitalCamera.kt
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@@ -1,21 +1,15 @@
package org.openrndr.extras.camera
import org.openrndr.*
import org.openrndr.color.ColorRGBa
import org.openrndr.draw.DrawPrimitive
import org.openrndr.Extension
import org.openrndr.Program
import org.openrndr.draw.Drawer
import org.openrndr.draw.isolated
import org.openrndr.draw.vertexBuffer
import org.openrndr.draw.vertexFormat
import org.openrndr.math.Matrix44
import org.openrndr.math.Spherical
import org.openrndr.math.Vector2
import org.openrndr.math.Vector3
import kotlin.math.abs
import org.openrndr.math.transforms.lookAt as lookAt_
class OrbitalCamera(eye: Vector3, lookAt: Vector3, var fov:Double) {
class OrbitalCamera(eye: Vector3, lookAt: Vector3, var fov: Double, var near: Double = 0.1, var far: Double = 1000.0) : Extension {
// current position in spherical coordinates
var spherical = Spherical.fromVector(eye)
private set
@@ -25,6 +19,7 @@ class OrbitalCamera(eye: Vector3, lookAt: Vector3, var fov:Double) {
private var sphericalEnd = Spherical.fromVector(eye)
private var lookAtEnd = lookAt.copy()
private var dirty: Boolean = true
private var lastSeconds: Double = -1.0
var fovEnd = fov
@@ -105,13 +100,13 @@ class OrbitalCamera(eye: Vector3, lookAt: Vector3, var fov:Double) {
val lookAtDelta = lookAtEnd - lookAt
val fovDelta = fovEnd - fov
if (
Math.abs(sphericalEnd.radius) > EPSILON ||
Math.abs(sphericalEnd.theta) > EPSILON ||
Math.abs(sphericalEnd.phi) > EPSILON ||
Math.abs(lookAtDelta.x) > EPSILON ||
Math.abs(lookAtDelta.y) > EPSILON ||
Math.abs(lookAtDelta.z) > EPSILON ||
Math.abs(fovDelta) > EPSILON
abs(sphericalEnd.radius) > EPSILON ||
abs(sphericalEnd.theta) > EPSILON ||
abs(sphericalEnd.phi) > EPSILON ||
abs(lookAtDelta.x) > EPSILON ||
abs(lookAtDelta.y) > EPSILON ||
abs(lookAtDelta.z) > EPSILON ||
abs(fovDelta) > EPSILON
) {
fov += (fovDelta * dampingFactor)
@@ -134,6 +129,26 @@ class OrbitalCamera(eye: Vector3, lookAt: Vector3, var fov:Double) {
companion object {
private const val EPSILON = 0.000001
}
// EXTENSION
override var enabled: Boolean = true
override fun beforeDraw(drawer: Drawer, program: Program) {
if (lastSeconds == -1.0) lastSeconds = program.seconds
val delta = program.seconds - lastSeconds
lastSeconds = program.seconds
update(delta)
drawer.perspective(fov, program.window.size.x / program.window.size.y, near, far)
drawer.view = viewMatrix()
}
override fun afterDraw(drawer: Drawer, program: Program) {
drawer.view = Matrix44.IDENTITY
drawer.ortho()
}
}